Best Fiber Supplements for Constipation (2024): Get Going With These Picks

Feeling like your stomach is literally always hurting? Are your trips to the bathroom…unproductive lately? You may not be eating enough fiber. However, you’re not alone. 

Even though the USDA recommends a daily fiber intake of 25 grams per day for women and 38 grams per day for men, the latest data shows the average American only eats about 15 to 18 grams of fiber per day. 

You may be shocked to know that fiber is a carbohydrate, but it is one that does not deliver calories as the body cannot break it down like it can other foods. This property gives fiber some interesting benefits to the human body. 

Typically, you can find fiber in the diet from fiber-rich foods like fruits, vegetables, whole grains, legumes, nuts, and seeds. These whole foods offer many more nutrients and beneficial compounds than fiber, so if possible, try to get your fiber from them.

However, if you’re experiencing constipation, it’s not super practical to go chow down on a can of beans. That’s where a fiber supplement (and some good hydration) can come to the rescue for your gut. Discover below what our team thought were the best fiber supplements for constipation.

As a sports dietitian, I have extensive experience with dietary supplements and comprehensive knowledge on the health benefits of various food compounds. I always make it a point to review the peer-reviewed literature before writing any recommendations for foods or products. 

All of our team members are highly qualified and credentialed health and nutrition experts, and we are committed to providing raw and honest reviews of products to ensure that you are receiving the most accurate, evidence-based information to make a decision.

We rate these supplements from 1 to 5 in the following categories:

• Price per serving
• Formulation
• Taste/Swallowability
• Side effects

Medical disclaimer: This article is intended for educational and informational purposes only. It is not intended as a substitute for medical advice. For health advice, contact a licensed healthcare provider. GGR also recommends choosing a product that has been third-party tested for quality.

7 Best Fiber Supplements for Constipation

• Best Fiber Supplement for Constipation Overall: Transparent Labs Prebiotic Aquatic Greens + Fiber
• Best Daily Fiber Supplement for Constipation: Bulletproof Innerfuel Prebiotic Powder
• Best Budget Fiber Supplement for Constipation: Benefiber Unflavored Daily Fiber Powder
• Best Gummy Fiber Supplement for Constipation: VitaFusion Fiber Well Gummies
• Best Organic Fiber Supplement for Constipation: Garden of Life Dr. Formulated Organic Fiber Supplement  
• Best Caplet Fiber Supplement for Constipation: Citrucel Fiber Therapy Caplets
• Best-Tasting Fiber Supplement for Constipation: Metamucil 4-in-1 Psyllium Fiber Supplement 

Best Fiber Supplement for Constipation Overall: Transparent Labs Prebiotic Aquatic Greens + Fiber

Good for: Health-conscious people who don’t mind some antioxidants with their fiber

Best Overall

Transparent Labs Prebiotic Greens

GGR Score: 4

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Product Highlights

• Combines algae greens and prebiotic fibers to improve gut health
• Each serving has 3 grams of spirulina, 3 grams of chlorella, 3 grams of organic acacia fiber, 3 grams of organic green banana flour, and 1 gram of organic Jerusalem artichoke fiber
• Gluten-free
• Gut-flora-friendly greens drink
• Available in unflavored, Peach Mango flavor, and Pineapple Coconut

Pros & Cons

Pros

• Packed with fiber, gut-flora-friendly greens, and mineral-dense veggies
• Effectively works to improve gut health
• Combines algae greens and prebiotic fibers
• 60-day money-back guarantee

Cons

• Tastes bitter to some

Bottom Line

Combining an algae greens blend with prebiotic fibers, Prebiotic Greens is intended to improve digestion and health.

This two-in-one supplement is a solid product for those looking for more regular bowel movements and improved gut health. That’s because, unlike most fiber supplements, this one has a two-pronged approach to better gastrointestinal health.

Part one is algae greens. Every scoop offers 3 grams of spirulina and 3 grams of chlorella. Both are types of fresh-water seaweed that are commonly included in greens powders, and for good reason. They have a reputation for being superfoods due to their powerful antioxidant content and ability to fight inflammation in the body. 

Another unique property of algae, like spirulina, is that it’s one of the few, rare sources of vitamin B12 that does not come from animal sources. However, some of this B12 is non-active in humans, meaning it won’t do much for meeting a daily B12 requirement—not-so-good news for people who are vegans or vegetarians, who often do not get enough of this important nutrient.

Part two of this supplement is prebiotic fibers. Organic acacia fiber, green banana flour, and Jerusalem artichoke fiber all offer three different types of fiber, which is a great variety for treating and preventing constipation. 

The combination of soluble, insoluble, and slow-fermenting fibers also gives the good bacteria in your gut something to munch on which, in turn, can support their growth and multiplication. If you take a probiotic supplement as a part of your daily supplement regimen, this fiber powder would be the ideal complement for healthy gut support. 

Transparent Labs Prebiotic Aquatic Greens + Fiber mixes easily in a variety of beverages and comes in two flavors: unflavored and Peach Mango. Don’t worry, though, even the fruity version contains no artificial sweeteners, coloring or preservatives, just inflammation-fighting, fiber-packed goodness. Our expert product tester, GGR Senior Staff Writer Amanda Capritto, tried the Peach Mango flavor and said it did taste a bit like grass, but it was tolerable nonetheless. 

The natural ingredients, practical use, and benefits to both overall health and gut health make Transparent Labs Prebiotic Aquatic Greens + Fiber the best fiber supplement for constipation overall. Read our Transparent Labs Prebiotic Greens review for our full thoughts.

Best Daily Fiber Supplement for Constipation: Bulletproof Innerfuel Prebiotic Powder

Good for: Those looking to improve their stool quality

Best Daily

Bulletproof Innerfuel Prebiotic

GGR Score: 3.38

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Product Highlights

• Daily prebiotic supplement powder 
• 17 grams of prebiotics 
• Bulletproof listed benefits: Eases digestion, feeds good gut bacteria, and supports immune system

Pros & Cons

Pros

• Subscribe and save 20%
• 100% satisfaction guaranteed – 30 day money-back window
• Keto-friendly
• Gluten-, sugar-, and soy-free
• Non-GMO
• Positive customer reviews

Cons

• 1 serving is 2 scoops
• May cause bloating—recommended start with smaller teaspoon serving to assess tolerance
• Mixed reviews on mixability
• Processed in a facility that also processes allergens: milk, fish, crustacean shellfish, tree nuts, wheat, and soybeans
• One container is not a month supply, only “about 20 servings”

Bottom Line

Bulletproof’s Innerfuel Prebiotic is a powder supplement with 17 grams of prebiotics per 2-scoop serving. This supplement is intended to ease digestion, feed and increase good gut bacteria, and support your immune system. Customer reviews of this product are mostly positive and users feel their digestion improved and their stomach discomfort decreased. Some customers noted that the powder did not mix well.

If you have trouble going to the bathroom or simply want to improve your overall digestion, Bulletproof Innerfuel Prebiotic Powder has a critical ingredient linked to improved stool quality: partially hydrolyzed guar gum. This substance is typically used to thicken foods, but in its partially hydrolyzed state (meaning it’s been broken down into smaller pieces for easier absorption) it has proven effects on the digestive system and your mental health.

Several studies have shown that patients have better stool quality and reduced digestive distress, and the changes to the gut bacteria could also lead to improved mental health (remember, the gut is called “the second brain”). Most of the studies were conducted using small population sizes, meaning there was a limited number of participants, though the ones we found used a smaller dose than what’s found in Bulletproof’s supplement.

In other words, there’s a good chance you may be able to replicate the success seen in the studies. You’ll also get 10 grams of organic acacia, a plant that’s rich in soluble fiber and has proven benefits for the digestive system.

While we haven’t tested this fiber, yet, there are several customer reviewers that say they achieve their desired results and that the flavorless powder is easy to mix with the beverage of your choice. You can get it in a 20-serving jar or 14 on-the-go packets.

Best Budget Fiber Supplement for Constipation: Benefiber Unflavored Daily Fiber Powder

Good for: Thrifty individuals wanting to get the most value out of their supplement

Best Budget

Benefiber Daily Prebiotic Powder Unflavored

GGR Score: 4

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Product Highlights

• Prebiotic fiber supplement 
• Unflavored 
• Nourishes good bacteria in your gut 
• No gluten, sugar, or artificial flavors

Pros & Cons

Pros

• 100% natural
• Plant-based wheat dextrin
• No gluten, sugar, or artificial flavors
• Safe for kids (6-11) at lower serving size

Cons

• Lower fiber content
• Will quickly use bottle if taking recommended dose
• Some reviewers didn’t notice a difference in their bowel movements

Bottom Line

Benefiber Daily Prebiotic Fiber is a plant-based fiber that most people found effective in helping their digestive system.

Benefiber Daily Prebiotic Fiber Supplement Powder is a constipation relief tool that uses natural prebiotic fiber. One of the reasons we like this supplement is because of its low cost and versatility. It dissolves completely in food and drinks and has no taste. Our expert product tester and GGR writer Lauren Strong definitely agreed that it was very easy to mix into just about any beverage, and attributes this supplement for helping with regular bowel movements. 

The main fiber used in Benefiber Daily Prebiotic Fiber is wheat dextrin, which is a soluble fiber. Soluble fibers are known not only for their beneficial effects on the gastrointestinal system, but also for their role in heart health.

Soluble fiber can reduce the absorption of cholesterol into your bloodstream, thereby lowering bad cholesterol levels. So, you can enjoy the benefits of both gut and heart health in one easy-to-use fiber powder.

Please note that soluble fiber needs a good amount of water to keep it moving through the digestive tract and promote regularity. To prevent constipation from becoming worse, if you take a supplement like Benefiber consistently, make sure to keep yourself well hydrated as well.

One important thing to remember about this supplement is that it does need to be consumed three times a day for full effect, so if you elect to include it in your daily routine, it’s necessary to stay vigilant about your timing and consistency. 

Best Gummy Fiber Supplement for Constipation: VitaFusion Fiber Well Gummies

Good for: Those looking for a tasty, gummy fiber supplement

Best Gummy

VitaFusion Fiber Well Gummies

GGR Score: 4

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Product Highlights

 

• Fiber gummy supplement 
• Offers 5 g of fiber per 2 gummies
• Sugar-free
• Peach, strawberry, and blackberry flavors

Pros & Cons

Pros

• Affordable at $0.25 per serving
• Made with polydextrose
• 5 g of fiber per serving
• Sugar-free

Cons

• Some reviewers expressed concern about texture
• Common complaints of gummies melting together in bottle
• Contains gelatin, which vegans cannot eat
• Sweetened with sucralose, which may cause digestive upset in some people

Bottom Line

VitaFusion Fiber Well gummies are a fiber gummy supplement that provide 5 grams of fiber per two-gummy serving.

Not looking to drink down a fiber concoction? Have a real issue with taking pills and capsules? This is where fiber gummies can come to the rescue. 

Taking fiber supplements has never been more fun with Vitafusion Fiber Gummies, which come in flavors such as peach, strawberry, and berry. 

One serving offers an impressive 5 grams of fiber, which is a higher content than similar products. It also contains B vitamins for energy. 

Vitafusion Fiber Gummies contain mainly polydextrose, which is a synthetic, man-made fiber that is derived from glucose. Widely used as a food ingredient in the U.S., it is classified as a soluble fiber and completely safe to consume.

In addition to keeping things moving through the digestive tract, polydextrose has also been shown to promote satiety or the feeling of fullness. There is therefore a possibility that this type of fiber can play a role in the management of hunger.

Take note that these gummies do contain gelatin to give them their gummy texture, which makes this product unsuitable for vegans. 

If you’re planning to use these tasty little guys for a long period of time and want to save some bucks, you can find Vitafusion Fiber Gummies for sale in bulk on Amazon.

Best Organic Fiber Supplement for Constipation: Garden of Life Dr. Formulated Organic Fiber Supplement 

Good for: People looking to get things moving in their gut with pure, whole ingredients

Best Organic

Garden of Life Dr Formulated Organic Fiber Supplement

GGR Score: 3.75

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Product Highlights

• Organic fiber blend from 5 sources 
• Vegan and kosher 
• Free of gluten, psyllium, and dairy 
• USDA-certified organic, non-GMO 
• Certified B corp, carbon neutral 
• Doctor formulated 

Pros & Cons

Pros

• Multiple flavors: citrus and unflavored
• No artificial colors or sweeteners
• Includes 5 superfoods
• Certified organic, non-GMO, vegan, gluten-free, and kosher

Cons

• Manufactured in a facility that also processes egg, milk, and soy
• Customers share it doesn’t mix well
• Users complained of stevia taste, though none is listed in the ingredients

Bottom Line

Garden of Life Organic Fiber has high-quality, organic ingredients, and is a good option for people looking for a non-psyllium fiber supplement.

Garden of Life is known for its commitment to whole food, science-based, Certified USDA Organic, and Non-GMO Project Verified supplements, so it was a no-brainer to choose their Dr Formulated Organic Fiber Supplement as our pick for the best organic fiber supplement. 

This supplement is sugar-free and third-party certified USDA organic, Non-GMO Project Verified, certified vegan, dairy-free, gluten-free, U Kosher, and Carbonfree. 

It provides gentle support for occasional constipation with all organic ingredients, including acacia fiber, which is the main source of fiber in this fiber powder.

Acacia fiber, also known as acacia gum or gum arabic, is a natural gum derived from the sap of the acacia tree. It is known for its health benefits for smoother digestion and hunger control.

Acacia is also a fermentable fiber, which is highly active in the large intestine when consumed, which means it can enhance the growth and proliferation of good gut bacteria. In fact, it has been shown to increase the population of Bifidobacteria and Bacteroidetes in the intestines.

Garden of Life Dr. Formulated Organic Fiber Supplement also boasts third-party testing certification. This means that Garden of Life voluntarily submitted its product to a third party to be tested for purity and safety.

Note that, even though this powder is said to have no flavor, gritty or gummy texture, our tester did not agree. Lauren said it tasted like wet dirt—ouch. She tried the unflavored option though, so maybe the flavored Citrus option would be better.  

Best Caplet Fiber Supplement for Constipation: Citrucel Fiber Therapy Caplets

Good for: Those who prefer the portability and flexibility of a fiber capsule

Best Caplet

Citrucel Fiber Therapy Caplets

GGR Score: 3.75

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Product Highlights

• Methylcellulose fiber caplets
• Relieves occasional constipation 
• Works within 12 to 72 hours
• Claims to not cause excessive gas

Pros & Cons

Pros

• No mixing
• Affordable
• 100% soluble fiber

Cons

• Some customers found pills difficult to swallow
• Multiple customers report item arrived open
• Choking hazard if not taken with adequate fluid

Bottom Line

Citrucel caplets are an affordable option if you’d prefer a non-powder fiber supplement.

One of the reasons that Citrucel Fiber Therapy Caplets made our team’s list of the best fiber supplements for constipation is because they are among the most recommended therapeutic fiber laxatives by physicians.

These caplets come with the promise that, when used as directed, they can generally produce a bowel movement in 12 to 72 hours. In addition to preventing excessively dry and hard stools, Citrucel’s caplets make stools bulkier and easier to pass.

And good news! While the main source of fiber in the supplement comes from methylcellulose, which is a soluble fiber, it is not fermentable, so unlike many other fiber supplements, it doesn’t tend to cause excess gas and bloating, according to laboratory testing. However, individual results may vary. 

Methylcellulose is also a plant-based ingredient that contains no preservatives nor toxins, is non-allergenic, and is non-toxic when used as directed. Thus, most people will be able to reap the benefits of this supplement without having to worry about safety.

With no mixing, no mess, and no beverage to consume, many people may feel taking their fiber via caplet is quicker and more practical than a powder. Capsules also tend to be a bit more portable, in case you need a dose of regularity while you’re on the road. However, you need to take four caplets for 2 grams of fiber—this can be a lot to swallow, according to our expert product tester, GGR Senior Editor Nicole Davis. 

Just remember to take it with at least 8 ounces of water to reduce the risk of choking as fiber capsules can swell in the throat. Also keep in mind that it might take anywhere between 12 and 72 hours for this product to take effect, so make sure you use it at the earliest sign of constipation or irregularity.

Best-Tasting Fiber Supplement for Constipation: Metamucil 4-in-1 Psyllium Fiber Supplement 

Good for: Those looking for a great flavor in their fiber supplement

Best-Tasting

Metamucil 4-in-1 Fiber

GGR Score: 4.5

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Product Highlights

• Powder psyllium husk fiber supplement 
• Promotes digestive health and regularity
• Orange flavor 
• Subscribe & Save option available
• Sugar-free blend

Pros & Cons

Pros

• Promotes healthy blood sugar levels
• No added sugar
• No.1 doctor recommended fiber, according to Metamucil
• Gluten-free

Cons

• Metamucil claims are based on small studies
• Contains aspartame
• Only 1 flavor

Bottom Line

Metamucil is a plant-based fiber supplement with good reviews for taste and effectiveness.

There is simply no other leading brand that is made with psyllium fiber, a plant-based fiber that plays an important role in maintaining the health of the digestive system, than Metamucil for constipation. 

Currently ranked as the #1 best selling product in the “Psyllium Nutritional Supplement” category on Amazon, our testers couldn’t wait to take a peek at what was causing all the buzz.

This fiber supplement has an orange flavor—similar to Tang, according to tester Lauren—and is consistently reviewed as one of the best tasting fiber supplements, which is important if you will be using it regularly. 

Metamucil’s fiber source, psyllium, is a soluble fiber derived from the seeds of Plantago ovata, a plant native to India. It has traditionally been used for both constipation and diarrhea symptoms. It is also a prebiotic fiber, so it plays another role in helping to maintain a healthy gut. 

The results of one study¹ showed that psyllium fiber, which is a soluble fiber, increased the moisture, weight, and texture of stools more than wheat bran fiber, another well-known fiber source.

Despite its great flavor, Metamucil is sugar-free and its fiber has even been shown² to help support stable blood sugar in those with Type 2 diabetes.

It is also reported that psyllium husk can be a very valuable addition to a heart-healthy diet, as studies have suggested³ it has the ability to support lower levels of bad cholesterol levels.

Furthermore, some studies suggest⁴ that psyllium fiber can support weight loss by promoting satiety, which can prevent overeating.

The laxative properties of psyllium husk can be described as bulk-forming. As a result, it absorbs water in the gut and allows the bowel movements to move more easily through the colon which, in turn, promotes regularity. 

Other Fiber Supplements We Researched

There are a lot of fiber supplements out there that work, but we used our own standards to narrow down the best to recommend to you good people. So, here are some other products out there that are also great, but didn’t quite make our list.

• Spectrum Essentials Organic Ground Chia Seeds
• Thorne Research FiberMend
• Unbloat
• ColonBroom Fiber Supplement Powder

How We Picked and Tested the Best Fiber Supplements for Constipation

When picking the best fiber supplements, we made sure to compile a list that would serve anyone so that regardless of factors like budget and taste preferences, there’s something for everyone. Below is the criteria our testers used to handpick the brands on our list:

• Lack of fillers: Unfortunately, many supplement companies “pad” their products with cheap fillers, which means the consumer is getting a whole lot of maltodextrin in their powder, but very little fiber. We made sure the products on our list don’t commit this offense. 

• Fiber source: Different fibers have different functions based on their type, and each individual has their own unique requirements, so we wanted to make sure to offer a variety so everyone has a fiber option that fulfills their needs.

• Fiber form: Taking pills is a miserable experience for some consumers. On the other hand, choking down an 8+-ounce concoction of orange-flavored psyllium also doesn’t sound appealing. We did our best to include all of these forms of fiber supplements depending on your preferences. 

• Evidence-backed ingredients: We strive to recommend products that contain ingredients that have research to support their inclusion in health supplements. This list was no different!

Benefits of Fiber Supplements

As a dietitian, I spend a large portion of my working time trying to brainstorm strategies on how to get clients and patients to just eat more fiber. 

Not because I’m a deployed soldier who is tasked with going around to yell at anyone who does not follow the USDA’s recommendations, but because I understand the myriad of health benefits that come along with consuming enough fiber. 

It’s important to know that fiber isn’t just meant to be consumed when the bodily pipes are backed up, but it can also play a role in weight loss, blood glucose levels, heart health and to supplement a less-than-optimal diet. 

Better Gut and Digestive Health

It’s well-known in the health and nutrition community that fiber is great for supporting a healthy gut and a regular digestive system. It’s fiber’s most famous function! A very large body of evidence⁵ supports this notion and applies to fiber of nearly all types.

Evidence also suggests⁶ that fermentable fiber and some soluble fibers can operate as a prebiotic, which is a type of fiber that the good bacteria in our intestines will consume as food. When enough prebiotics are available for them to munch on, the more they tend to multiply and thrive. 

Prevent Overeating and Manage Weight

Both soluble and insoluble fiber can play a big role in not only adding bulk to stool, but adding bulk to your meals. Studies suggest⁷ that when meals include foods that are high in fiber, they tend to provide a more profound feeling of fullness. 

One thing to understand is that fibers do not contain calories and do not break down in the gut during digestion. However, the stomach is not a calorie counter, it is a volume counter. Thus, when fiber adds volume without adding calories, it can indirectly reduce calorie intake. 

Due to fiber not breaking down like other nutrients, it tends to hang out in the stomach for much longer than quickly-digesting foods. This means that it can keep you feeling fuller for longer and some studies⁸ have shown that dietary fiber, when consumed regularly, can reduce body weight when in a calorie deficit.  

Maintain a Healthy Heart

Fiber intake has been well-established as a useful tool to support cardiovascular health. According to a rigorous meta-analysis⁹, high dietary fiber intake can significantly reduce cardiovascular disease incidence and mortality.

The same study identifies the property of fiber’s ability to lower cholesterol as the possible method for this benefit. How does this happen? When food is digested, the gallbladder releases bile to help emulsify the fluids in the ingested food in order to achieve a smoother digestion. 

This bile contains cholesterol that is pulled from the body’s blood to make. Fiber, when digested, pulls in and absorbs this bile. Remember, fiber is not broken down, so when fiber passes in the stool, so does the bile (and cholesterol) from your body. 

It’s this way that fiber lowers the bad cholesterol in the blood and the mechanism is simple metabolic science. Given that diets rich in plants (and thereby fiber) also have a huge support from the American Heart Association to maintain a healthy heart, the benefits are clear.

Helps to Control Blood Sugar

Evidence suggests¹⁰ that, along with improved cardiovascular health, dietary fiber may offer beneficial effects on blood sugar in those with Type 2 diabetes.

Another study suggests¹¹ that dietary fiber can even prevent the development of Type 2 diabetes when a healthy diet is also being consumed.

How does this happen? The mechanism is similar to what makes fiber beneficial to supporting a healthy heart. Blood sugars that spike and dive wildly and often is bad news for those with insulin resistance and diabetes as they are just hard on the body. 

However, because fiber takes so long to break down, it slows digestion. So, when consumed in meals that contain foods that may otherwise cause unstable blood sugars, it prevents glucose from reaching the blood as quickly, thus preventing spikes and dives.  

Supplement for Veggie Doubters

The practically sole source of fiber in the diet is fruits and vegetables. However, according to the CDC, only 1 out of 10 Americans consume enough fruits and vegetables for optimal health. Thus, it can be safe to assume that 90% of Americans do not get enough fiber. 

Firstly, it should be mentioned that it should always be everyone’s goal to eat plenty of fruits and vegetables. The health benefits extend way beyond their fiber content as produce also contains antioxidants, phytonutrients, vitamins, and minerals.

As an alternative, if you are someone who is struggling to reach your fruit and vegetable goals on a daily basis (whether it is due to taste, budget, or other factors), you may find that supplementing your diet with fiber can help you reach your goals while you work your way up to the recommended amounts from food.

Dosing and Interactions 

Due to fiber typically being derived from food sources, there are no known interactions that can be stated here in healthy individuals. However, for people who don’t already have a diet high in fiber, you can experience mild side effects including gas, bloating, and cramping as you start to consume more fiber.

You don’t want to consume more than 50 grams of fiber from supplementation a day, which is two times the recommendation. Not only can this cause many frequent and unpleasant trips to the bathroom, but it can adversely affect your digestive process. 

True, fiber is helpful at keeping you regular and voiding the bowels, but if this is happening too often, you could be losing some important nutrients in your stool that should be going in your body, not the toilet. 

Too much fiber without adequate hydration can also cause constipation, so keep that in mind if you plan on taking more than is typical. 

Third-Party Testing

Any supplement that is labeled as third-party tested means that a company has voluntarily submitted samples of their product to a third party to be tested for purity and safety. 

For supplements like protein powders, this means it can assure you that the amount of protein in the powder is the same amount that is listed on the label. 

For other supplements, third parties test to be sure there are no harmful ingredients or additives like heavy metals or other toxins that often sneak into supplements that use fillers. Supplements are not foods, so remember, the FDA does not regulate them. This results in toxic substances appearing in supplements more often than you may think. 

However, with a certification of third-party testing, you can rest assured that what you’re consuming is on the label and only what is on the label. 

The most well-known third party testing companies are NSF and Informed Choice, so if this is something that is of concern to you, look for those logos or simply do a little research before you buy. 

Buying Guide: What to Look for in Fiber Supplements 

Please remember that if you are pregnant, lactating, or have any sort of GI disorder like Crohn’s or diverticulosis, you should check with your physician before beginning a fiber supplement. 

Due to the well-established effects that fiber can have on multiple facets of your health, there is no shortage of fiber supplements to choose from. So, what criteria should you use to identify the one you should spend your hard-earned money on?

Well, first, consider if you even need a fiber supplement in the first place. If you already consume a diet full of fruits, vegetables, whole grains and legumes, try tracking what you eat for a couple of days. If you’re already meeting the recommendations through food, I would be remiss as a registered dietitian to tell you to do anything differently. 

However, fiber supplements can be useful if you need a little extra support or are experiencing constipation. Here’s what to look for:

Form

Decide whether or not you prefer a powder or a capsule. If you’re on the go a lot, be it on the road or traveling to an office, you may want to opt for a capsule that you can pop with 8 ounces of water and go on about your day without finding a vessel to do all the mixing. If pills are difficult for you, pick a powder you can turn into a tasty beverage or mix easily into your food and other drinks. If you’re not a fan of either, try a fiber gummy. It’s hard to say no to benefits that taste like candy. 

Budget

If you foresee yourself needing to supplement with fiber consistently, it may be wise to go for a fiber supplement that’s on the thrifty side. Just make sure to look at resources like this article to be sure they are actually of high quality. 

Health Objectives

If you are looking to optimize weight loss, help stabilize blood sugars, and maintain a healthy heart, then you want to choose a fiber supplement that has soluble fibers. For better gut and digestive health, choose a fiber supplement that contains both insoluble and soluble fibers.

Number of Ingredients

Though there’s no number of ingredients that are better than others, when it comes to supplements, a shorter ingredient list is usually better. If the ingredient list is short, this usually means the amount of additives, fillers and extra junk has been kept to a minimum. So, you get more of the good stuff in every serving. 

FAQs About Fiber Supplements for Constipation

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any diseases.

References

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8. Jovanovski E, Mazhar N, Komishon A, et al. Can dietary viscous fiber affect body weight independently of an energy-restrictive diet? A systematic review and meta-analysis of randomized controlled trials. Am J Clin Nutr. 2020;111(2):471-485. doi:10.1093/ajcn/nqz292
9. McRae MP. Dietary Fiber Is Beneficial for the Prevention of Cardiovascular Disease: An Umbrella Review of Meta-analyses. J Chiropr Med. 2017;16(4):289-299. doi:10.1016/j.jcm.2017.05.005
10. Jovanovski E, Khayyat R, Zurbau A, et al. Should Viscous Fiber Supplements Be Considered in Diabetes Control? Results From a Systematic Review and Meta-analysis of Randomized Controlled Trials [published correction appears in Diabetes Care. 2019 Aug;42(8):1604]. Diabetes Care. 2019;42(5):755-766. doi:10.2337/dc18-1126
11. McRae MP. Dietary Fiber Intake and Type 2 Diabetes Mellitus: An Umbrella Review of Meta-analyses. J Chiropr Med. 2018;17(1):44-53. doi:10.1016/j.jcm.2017.11.002

Destini Moody, RD, CSSD, LD

Destini Moody, RD, CSSD, LD is a sports dietitian and the head of performance nutrition for the NBA G League Ignite. In addition to working with pro athletes, Destini has ghostwritten four weight loss and wellness cookbooks. She also authors online content covering fitness and nutrition topics.

Further reading

Living.Fit Barbell Review (2024): A Reliable Budget Barbell for Everyday Use

by Caine Wilkes, OLY, CNC, USAW-L1

Looking for an inexpensive bar for multiple uses and strength training methods? Read our Living.Fit Barbell review to see if this bar can suit your needs. Read more

PES Certification (2024): Strength and Conditioning and Continuing Education

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Is this strength and conditioning certification right for you? Depending on your career goals, the PES Certification might be the next athletic performance cert for you. Read more

Slam, Toss, and Throw Them: The Best Slam Balls (2024)

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No matter how you toss or drop them, these slam balls can endure some wear and tear. Here are our picks for the best slam balls on the market. Read more

Treadmill vs Recumbent Bike: Tips for Which to Choose

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If you’re debating using a treadmill vs recumbent bike, we have some key considerations for you. Read more