We test and review fitness products based on an independent, multi-point methodology. If you use our links to purchase something, we may earn a commission. Read our disclosures.
Favored by gym-goers for its ability to support muscle growth and recovery and deliver the essential amino acids the body needs daily, protein powder is a staple dietary supplement for anyone looking to build lean muscle. While many rely on standard whey protein, a whey protein isolate is often considered a better—slightly more expensive—option.
In this Jacked Factory Authentic Iso Whey Protein review, we’ll be breaking down everything you need to know about this grass-fed protein powder. Should you drop your current protein powder and switch to Jacked Factory Authentic Iso? Does the low cost mean this is one of the best protein powders on the market? Let’s see what our tester thought.
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.
Real Reviews from Real Users
When we write a review, you can trust that our testers have hands-on experience trying and rating the product. Our diverse team of testers includes certified personal trainers, registered dietitians, gym owners, and Olympians, and we know protein like the back of our hands—at the time of writing, we’ve tested over 110 kinds of protein powder.
To keep things transparent, we rate each product according to our supplement testing methodology, which scores on a scale of 1 to 5 for various factors, including:
- Price per serving
- Taste
- Formulation
- Solubility
- Customer service
- Third-party Testing
Jacked Factory Authentic Iso Whey
Jacked Factory Authentic ISO Grass-Fed Whey Protein
Product Highlights
- Three flavors
- 25g per scoop
- 110 calories per serving
- Under 1g of fat per scoop
Pros & Cons
Pros
- 25g of protein
- Only 110 calories per scoop
- Under 1g of fat per serving
- Subscribe-and-save options
Cons
- Ultra-sweet taste
- Sweetened with sucralose
- Leaves clumps and floaters
Bottom Line
The Jacked Factory Authentic ISO Grass-Fed Whey Protein comes very close to being pure protein, making it a great choice for those who are trying to meet their macronutrient goals. Plus, the price per serving is where this ISO shines. Keep in mind our testers found this whey isolate to be a little too sweet but it was not a dealbreaker.
A Quick Look at Jacked Factory Authentic Iso Whey
Jacked Factory Authentic Iso Whey is a clean, minimal whey protein isolate supplement that uses grass-fed whey and a short ingredient list to deliver a supplement high in protein and low in calories. A whey isolate is a type of protein powder that’s gone through extra processing to remove more fat, cholesterol, and lactose, resulting in a protein that’s lower in calories and easier to mix and digest than a whey protein concentrate or casein protein.
It’s available in several flavors (including an unflavored option), has a high amount of protein per serving at an affordable cost, and excellent customer support as the cherry on top.Jacked Factory also makes a standard whey protein, along with pre-workout supplements, creatine, and a variety of other health and fitness supplements.
RELATED: Jacked Factory Authentic Whey Review
Before You Buy
- Jacked Factory uses grass-fed whey in their protein powders, which will increase the cost a bit
- While the labeling is very transparent, there’s no third-party testing to verify the ingredients
- This product contains sucralose, which may leave an overly sweet aftertaste
Is Jacked Factory Authentic Iso Whey Worth It?
Jacked Factory Authentic Iso Whey is one of the more affordable options on the market for those searching for a whey isolate. You may be able to get a lower price per serving with a standard whey protein, but this is very affordable as far as isolates go, with most other whey proteins starting at $1.40.
If you’re looking for a whey protein isolate, we haven’t seen a more affordable option, though you may be able to save some money by using whey concentrate if you don’t need a whey isolate.
Great for:
- Those on a fat-loss diet who want a low-calorie option to boost their protein intake
- Athletes who want a fast-digesting protein for post-workout recovery
- Those who prefer grass-fed dairy protein powders
- Anyone shopping on a tight budget
Not recommended for:
- Athletes looking for a high-calorie protein powder to support muscle-building and weight gain
- Those sensitive to sucralose
- Those following a plant-based diet who may prefer one of the best vegan protein powders
Jacked Factory Authentic Iso Whey Specs
| Price per serving | $1.33 |
| Serving size | 1 scoop (30.1 g) |
| Type of protein | Whey protein isolate |
| Protein content | 25 g |
| Carb content | 1 g |
| Fat content | 0.5 g |
| Notable ingredients | Grass-fed whey protein isolate, natural & artificial flavors, Himalayan rock salt, sucralose, stevia extract. |
| Flavors | Chocolate Peanut Butter, Milk Chocolate, Cookies & Cream, Blueberry Muffin, Cinnamon French Toast, Unflavored, Vanilla Oatmeal Cookie, Vanilla, Peanut Butter |
| Third-party tested? | No |
Experience Using Jacked Factory Authentic Iso Whey
Our product tester who tried Jacked Factor Authentic Iso Whey for our review has extensive experience testing all kinds of supplements, especially protein.
Overall, he had a pleasant experience with the protein powder, saying he enjoyed the taste and texture, and appreciated that there are quite a few flavors available. He tested the vanilla flavor, so we can’t comment on any of the other flavors, but many customers report enjoying the taste.
RELATED: What to Look for in Protein Powder
Price Per Serving
According to our testing methodology, a product needs to cost less than $1.50 per serving to earn 5 stars, and Jacked Factory Authentic Iso Whey passes with flying colors at $1.33 per serving. Because of this, we gave it a 4.5-out-of-5 rating.
Even though the use of grass-fed whey drives up the cost a bit, this is still an excellent value. Whey isolates are typically more expensive than whey protein, but this particular protein powder has a lower price per serving than many of the best whey protein options.
Formulation
For the formulation—which looks at the ingredients and the ratio of protein to carbs and fats—we gave Authentic Iso Whey a 5 out of 5. With 25 grams of protein per scoop, one carbohydrate, and less than one gram of fat, this is a lean protein powder with minimal calories per scoop.
While there are no fillers or additional amino acids listed, whey protein is a complete protein source that’s naturally rich in BCAAs and other essential amino acids. Most flavors are sugar-free, though some do use additives like sugar or peanut butter to add additional flavors.
The use of whey protein isolate drives up the cost, but is it worth it? When you look at whey protein isolate vs. concentrate, the difference is very small. Whey protein has been shown to improve recovery and performance1, and whey protein isolate is just whey protein that’s been processed a bit more. The main difference will be the protein and calorie content, as whey isolates generally have slightly more protein and slightly fewer carbs and fats.
Jacked Factory Authentic Iso Whey also uses grass-fed whey protein, which sounds nice on paper but may not provide the health boost you’re expecting. That’s because most of the health benefits of grass-fed dairy2 come from a better ratio of healthy nutrients in the fat, but in a whey isolate, nearly all of that healthy fat has been removed anyway.
Taste and Solubility
Our tester tried the vanilla flavor, and while he said it was true to taste, it was a bit overly sweet, so he gave it a 4 out of 5. This is a common theme among reviews and one of the flaws of Authentic Iso Whey—the sweeteners can be a bit much, and multiple reviews commented on the sweet flavor.
Of course, taste is subjective, so you may love vanilla or one of the other flavors. It may not have a great taste, but of course, different flavors will be better or worse than vanilla. This isn’t the worst-tasting protein, but it’s also not the best.
RELATED: Best-Tasting Protein Powder
For solubility, he also gave this a 4-out-of-5 score. He said it mixes well, with minimal powder or floaters after shaking it up. This would also work well in smoothies, or mixed into various foods for baking.
Side Effects
Our tester didn’t experience any side effects, so this earns a 5 out of 5. Of course, anyone with lactose issues may experience digestive challenges, and as with all protein powder, you should speak with a doctor if you have any health concerns.
However, if you generally tolerate whey protein powders well, you shouldn’t run into any issues with Jacked Factory Authentic Iso Whey.
RELATED: Protein Powder for Recovery
Third-Party Testing
The biggest drawback of Jacked Factory Authentic Iso Whey is the lack of third-party testing. Grass-fed whey—especially in its isolate form—is generally more expensive, so it’s interesting to see how affordable this is.
Third-party testing guarantees you’re getting what’s claimed on the label and avoiding any banned substances, so unfortunately, the lack of testing means this earns a 1-out-of-5 star rating.
It’s worth noting that we hired an independent lab to test Jacked Factory’s Authentic Whey, which is nearly identical to this formula, and the test results were good. So, this is probably a trustworthy product, but we can’t be 100% sure.
Jacked Factory Authentic Iso Whey vs Transparent Labs 100% Grass-Fed Whey Protein Isolate
Transparent Labs Whey Protein Isolate
Transparent Labs 100% Grass-Fed Whey Protein Isolate
Product Highlights
- High-quality whey protein isolate
- 28 grams of protein per serving
- 15 flavors to choose from
- $1.99 per serving
Pros & Cons
Pros
- High-quality protein
- No artificial sweeteners, food dyes, or preservatives
- Lots of flavors to choose from
- Good customer reviews
- Whey isolate may be easier to digest for some people
- Subscribe and save 10% plus free shipping
Cons
- Price per serving on the high end
- Some reviews complain that it's too sweet
Bottom Line
Our testers love Transparent Labs 100% Grass-Fed Whey Protein Isolate because we know exactly what's in it, and almost every flavor we've tried is a 5 out of 5 on taste. Yes, it's a little more expensive than other protein powders but you get what you pay for.
Jacked Factory isn’t the only company making grass-fed whey isolate powder, so let’s compare it to Transparent Labs 100% Grass-Fed Whey Protein Isolate, which has a very similar nutritional breakdown.
Our tester is no stranger to Transparent Labs Whey Protein Isolate and said, “I have been using Transparent Labs protein for some time now, so this seems to be a good option, but not a competitor for myself at least.”
Transparent Labs 100% Grass-Fed Whey Protein Isolate is the better choice in nearly every category, with more protein per serving, more flavors, no artificial sweeteners, and third-party testing, but it’s significantly more expensive and has more calories per serving.
Jacked Factory is better for those on a stricter budget or anyone looking for the lowest calories in their protein shake, and Transparent Labs is better for those who want the better product and aren’t worried about the cost.
For a full breakdown, check out our Transparent Labs Protein Review.
| Jacked Factor Authentic Iso Whey | Transparent Labs 100% Grass-Fed Whey Protein Isolate | |
| Price per serving | $1.33 | $1.99 |
| Serving size | 1 scoop | 1 scoop |
| Type of protein | Whey protein isolate | Whey protein isolate |
| Protein content | 25 g | 28 g |
| Carb content | 1 g | 1-3 g |
| Fat content | 0.5 g | 0.5-1 g |
| Notable ingredients | Grass-fed whey protein isolate, natural & artificial flavors, Himalayan rock salt, sucralose, stevia extract. | Grass-fed whey protein isolate, natural flavor, stevia, sodium chloride |
| Flavors | Chocolate Peanut Butter, Milk Chocolate, Cookies & Cream, Blueberry Muffin, Cinnamon French Toast, Unflavored, Vanilla Oatmeal Cookie, Vanilla, Peanut Butter | Milk Chocolate, French Vanilla, Chocolate Peanut Butter, Mint Chocolate Chip, Vanilla Peanut Butter, Strawberry Milkshake, Unflavored, Dark Chocolate, Oatmeal Chocolate Chip Cookie, Cinnamon French Toast, Sugar Cookie, Mocha, Peanut Butter, Vanilla Oatmeal Cookie, Blueberry Pancakes |
| Third-party tested? | No | Yes |
Customer Experience
Jacked Factory offers a 30-day return policy on your first order of any product, and if you’re not satisfied, they’ll refund your money. Just email the support team to request a return with a valid order ID and cover your return shipping.
If you need to contact Jacked Factory directly, they’ve got you covered with a contact form, email address, phone number, and live chat support. While we wish Jacked Factory would cover return shipping, the 30-day return window and a variety of customer support options still earn Jacked Factory a 4-out-of-5 for customer experience.
Ordering Jacked Factory Authentic Iso Whey
If you purchase directly from Jacked Factory, you can pay in full, split your order into multiple payments with Sezzle, or set up a subscribe-and-save plan to receive 15% off. All orders come with free shipping in the United States, and international shipping is also available.
You can also purchase from Amazon, and the product is regularly on sale with free Prime shipping.
Customer Reviews
Jacked Factory Authentic Iso whey has an average rating of 4.7 on the company website and a 4.4 rating on Amazon.
Many reviewers love the flavor and affordability, though some commented that they didn’t enjoy the taste, finding the sweetness unpleasant due to the artificial sweeteners.
Final Verdict of Our Jacked Factory Authentic Iso Whey Review
Jacked Factory Authentic Iso Whey is a clean, high-quality protein powder that uses grass-fed whey isolate to deliver a high dose of protein with minimal calories. At $1.33, the cost per serving is hard to beat, and with a wide variety of flavors, you’re sure to find one that tickles your taste buds.
There’s no third-party testing on this particular protein powder, but the standard Jacked Factory whey protein scored well in our independent lab testing. If you’re looking for a high-quality whey protein isolate to support your fitness goals, this is a solid option.
- High protein with low carbs and fats in each scoop, at an affordable price
- Available in nine flavors, including an unflavored option
- Sweetened with sucralose, which may leave an aftertaste for some
Full Rating
Jacked Factory Authentic Iso Whey
A protein powder that comes very close to being pure protein, at a reasonable price.
Product Brand: Jacked Factory
Product Currency: $
Product Price: 27.99
Product In-Stock: InStock
3.99
Jacked Factory Authentic Iso Whey: FAQs
Is Jacked Factory a good brand?
Yes. While there’s no third-party testing available, Jacked Factory seems to use high-quality ingredients with transparent labels, and most products are very budget-friendly. The company offers a 30-day return policy on your first order, and it’s easy to reach customer service.
Is Jacked Factory iso whey good for you?
Whey protein has been shown3 to increase performance, recovery, and muscle protein synthesis when paired with resistance training, and whey protein isolate digests and absorbs faster than standard whey protein.
Each serving of Jacked Factory Iso Whey is high in total protein, low in carbs and fats, and provides 25 grams of grass-fed whey isolate.
Is iso whey a good protein powder?
Yes. Each serving is high in total protein, low in carbs and fats, and provides 25 grams of grass-fed whey isolate.
Is Jacked Factory 3rd party tested?
Unfortunately, Jacked Factory is not third-party tested. Jacked Factory seems to be very transparent with its labeling and ingredients, but it’s hard to know the accuracy of the product’s formula for certain.
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
- Cintineo HP, Arent MA, Antonio J, Arent SM. Effects of Protein Supplementation on Performance and Recovery in Resistance and Endurance Training. Front Nutr. 2018;5:83. Published 2018 Sep 11. doi:10.3389/fnut.2018.00083
- Alothman M, Hogan SA, Hennessy D, et al. The “Grass-Fed” Milk Story: Understanding the Impact of Pasture Feeding on the Composition and Quality of Bovine Milk. Foods. 2019;8(8):350. Published 2019 Aug 17. doi:10.3390/foods8080350
- West DWD, Abou Sawan S, Mazzulla M, Williamson E, Moore DR. Whey Protein Supplementation Enhances Whole Body Protein Metabolism and Performance Recovery after Resistance Exercise: A Double-Blind Crossover Study. Nutrients. 2017;9(7):735. Published 2017 Jul 11. doi:10.3390/nu9070735
Further reading
We break down various exercises to deliver the best sandbag workouts to target every muscle group. Read more
How much carbs, protein, and fat per day is ideal for your health and fitness goals? GGR's nutrition experts disclose strategies for optimizing macros. Read more
If you’re looking to get your heart rate up and your forearms pumping, grab some battle ropes. Review this list to find the best battle rope for you. Read more
Wondering, "Does the elliptical build glutes?" Here’s everything you need to know about the capabilities of this cardio machine from training experts. Read more