Onnit is a performance-focused supplement brand offering a range of protein products, such as whey protein powder, plant-based protein powder, and protein bites. To help you decide if these protein supplements are the right fit for your needs, we conducted an in-depth review of each, assessing key factors such as nutrient profile, ingredient quality, taste, mixability, and cost. We’ll even spotlight what makes each product stand out and how they can power up your fitness journey.
With four years of experience as a certified nutrition coach and personal trainer specializing in sports nutrition and product testing, I’ve witnessed the transformative impact the right supplement can have. Whether you aim to build muscle, speed up recovery, or add an easy protein boost to your routine, we’ll guide you through Onnit’s top protein supplements.
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.
Onnit protein products
Compare Onnit protein products
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| Whey Protein | Plant-Based Protein | Protein Bites | |
| Rating | |||
| Price per serving | $2.00 | $2.25 | $1.66 |
| Protein per serving | 20 grams | 21 grams | 7-9 grams |
| Protein source | Grass-fed whey protein isolate | Pea protein concentrate, pumpkin seed protein, sunflower seed protein, watermelon seed protein | Grass-fed milk protein isolate, grass-fed whey protein isolate |
Key product features
What you should know
Onnit Whey delivers 20 grams of protein per serving, making it a viable option for individuals looking to support their daily protein intake to support muscle growth, recovery, or overall health. (1) Plus, it’s Informed Sport certified, making it a trusted protein supplement for athletes who compete in drug-tested sports.
- Our tester found the supplement challenging to mix in a standard shaker bottle, so we recommend using an electric mixer or blender for a smoother, lump-free consistency.
- At $2.00 per serving, Onnit Whey Protein is competitively priced, aligning with the average cost of most protein powders on the market.
- Onnit Whey includes a blend of digestive enzymes and probiotics to improve nutrient absorption and promote digestive health. (2,3)
Our take on Onnit Whey Protein
Onnit Whey is a whey protein isolate sourced from grass-fed cows designed to support muscle growth and recovery. As a whey isolate, it delivers a high protein to calorie ratio, providing 20 grams of protein with fewer than four grams of carbohydrates and less than three grams of fat per serving. This makes it an ideal protein powder for those looking to increase their protein intake without the extra calories from carbs and fats.
What sets this product apart from other protein powders on the market is the inclusion of digestive enzymes and probiotics, specifically Lactobacillus acidophilus, which research shows may enhance digestion and nutrient absorption. (4)
Digestive enzymes play a key role in breaking down the nutrients found in Onnit Whey Protein. For example, protease helps to digest proteins, amylase breaks down carbohydrates, and lipase aids in fat digestion. (2) These enzymes make it easier for the body to process and absorb the 20 grams of protein per serving, helping to reduce bloating or digestive discomfort that some people experience with protein powders. The addition of lactase is particularly beneficial for those who are lactose intolerant, as it assists in breaking down lactose, the sugar found in dairy. (2)
Lactobacillus acidophilus is a key probiotic that is included in supporting gut health. Probiotics help maintain a healthy balance of bacteria in the gut. (3) By incorporating Lactobacillus acidophilus, Onnit Whey Protein may help reduce bloating, improve digestion, and enhance nutrient absorption. (4)
Additionally, Onnit Whey Protein is Informed Sport certified, meaning it has been rigorously tested for banned substances, making it a safe choice for athletes. This certification ensures that the product meets the highest quality and safety standards, giving athletes peace of mind that they are consuming a trusted supplement without any prohibited ingredients.
Onnit Whey is available in both vanilla and Mexican chocolate. Our tester tried the vanilla flavor but found it underwhelming. She described it as having a sweet initial taste, followed by a bitter aftertaste that she didn’t enjoy. Additionally, she noted that the powder didn’t mix well in a standard shaker bottle, leading to clumping even after vigorous shaking. Because of this, we recommend using an electric mixer or blender for a smoother consistency.
On the other hand, I tried the Mexican chocolate flavor myself and truly enjoyed it. It has subtle notes of cinnamon mixed with chocolate, which gives it a rich and enjoyable taste. If you’re unsure which flavor to choose, you might find the Mexican chocolate a more satisfying option if you’re a fan of chocolate and spiced flavors.
Who Onnit Whey Protein is recommended for:
With its combination of 20 grams of protein per serving, digestive support, and Informed Sport certification, Onnit Whey Protein is a strong option for athletes and fitness enthusiasts alike.
Who Onnit Whey Protein is not recommended for:
As a whey-based protein powder, this supplement isn’t suitable for those following a vegan or strict vegetarian diet. Additionally, because it’s a whey isolate, it may not be ideal for individuals seeking a meal replacement or a calorie-dense shake to support weight gain goals.
Expert opinion
“This whey protein is a clean source of protein, being grass-fed, and provides 20 g of protein per serving, which is perfect for an after-workout recovery. The addition of digestive enzymes is helpful in the breaking down and absorption of the protein, which is an added bonus!” says Victoria Burgess, Ph.D., CSCS, CISSN, a certified strength and conditioning specialist and certified sports nutritionist.
What customers are saying
On Amazon, Onnit Whey boasts a solid 4. out of 5-star rating, with customers appreciating the added digestive enzymes and probiotics that enhance its benefits. However, some users have expressed concerns about the taste and mixability of the product.
“With the right blend of ice, some milk, this protein powder, bananas, and peanut butter. Yummy. It’s easy on the stomach, no gas or bloating.”
Will Chase, Amazon
Haley Knowlton shared her secret recipe using Onnit Whey, saying, “This tastes awesome! My 10 yr old nephew had high expectations when I offered to make him a smoothie, I didn’t even hesitate to make him my typical breakfast shake (Onnit, Banana, Ice, Almond milk, water — secret recipe you’re welcome). He gulped it down and asked for seconds! This is a high quality product that tastes good.”
Amazon user “Big C” talks about his experience with the Mexican chocolate flavor, noting it wasn’t what he expected. “I have used this for several weeks. Digestive system seems to process this just fine. The taste is different. It has a spice and chocolate taste. It isn’t awful, just different. I wanted something for a morning shake. It seems to last with me for several hours. I will try a different brand and may be back to this one if I don’t like the other product. This is worth trying out if you want a meal replacement or for workouts. If you want a milk chocolate taste, this isn’t it. The ingredients listed on the container sound good. All I know is this sits well with me and I do notice that it does stick with me without affecting my blood sugar.”
Specs
| Servings per container | 30 |
| Price per serving | $2.00 |
| Protein per serving | 20 grams |
| Protein source | Grass-fed whey protein isolate |
| Calories per serving | 110 to 120 (depending on flavor) |
| Flavors | Mexican chocolate, vanilla |
| Sweetener | Stevia, monk fruit extract |
Key product features
What you should know
Onnit Plant-Based Protein is ideal for consumers who want a plant-based alternative to traditional protein powders. Its vegan formula delivers a complete amino acid profile through its blend of pea, pumpkin seed, sunflower seed, and watermelon seed proteins.
- Our tester recommends mixing this protein powder with milk for a creamier, more satisfying shake-like consistency. When blended with water, she found the texture to be a bit too thin and watery for her liking.
- A container of Onnit Plant-Based Protein provides just 20 servings, bringing the cost of this supplement to $2.25 per serving. This is slightly more expensive than the average plant-based protein powder on the market.
- Onnit Plant-Based Protein is best suited for individuals seeking a non-dairy protein source, such as vegans, vegetarians, or anyone with lactose sensitivities.
Our take on Onnit Plant-Based Protein
Onnit Plant-Based Protein is designed to be a high-quality source of plant-based protein, catering to individuals who follow a vegan, vegetarian, or lactose-free lifestyle. Available in both chocolate and vanilla flavors, each serving delivers around 20 grams of protein while providing just 100 to 110 calories, depending on the flavor. This impressive protein-to-calorie ratio makes Onnit Plant-Based Protein a great fit for those focused on lean muscle maintenance or weight management.
One of the standout features of Onnit Plant-Based Protein is the added L-leucine, an essential branched-chain amino acid (BCAA) that plays a key role in muscle protein synthesis, helping to optimize recovery and promote muscle growth. (5) Onnit’s blend has 2.2 g of L-leucine per serving. This is noteworthy because plant-based protein supplements are often criticized for their low L-leucine content compared to whey-based products. (6) By incorporating more of this key amino acid, Onnit Plant-Based Protein effectively addresses this shortfall, ensuring that users receive similar muscle support from a plant-based product.
Another benefit of Onnit’s Plant-Based Protein formula is that it contains a complete amino acid profile, something that’s not always easy to find in plant-based or vegan protein supplements. The combination of multiple plant protein sources, including pea, pumpkin seed, sunflower seed, and watermelon seed protein, provides all nine essential amino acids the body needs to support muscle growth, repair, and overall health. (7) This makes it comparable to whey protein in terms of amino acid content, offering an excellent alternative for those avoiding animal-based products.
Our tester tried the vanilla flavor and found it to have a pleasant taste, mentioning the natural sweeteners of stevia and monk fruit provide a well-balanced level of sweetness. However, similar to Onnit Whey Protein, our tester advises using an electric blender for the smoothest consistency, as the protein powder didn’t fully dissolve and tasted gritty when mixed in a regular shaker bottle.
Who Onnit Plant-Based Protein is recommended for:
Onnit Plant-Based protein is recommended for individuals following a vegan, vegetarian, or lactose-free diet who want a quality protein supplement. This product would be ideal for athletes, fitness enthusiasts, or anyone who wants to support muscle recovery and growth without animal-based products. Additionally, it’s a great choice for anyone looking to avoid artificial ingredients, as it relies on natural sweeteners like stevia and monk fruit to sweeten the product.
Who Onnit Plant-Based Protein is not recommended for:
Unless you specifically require a plant-based protein powder due to dietary restrictions or lifestyle choices, whey protein is often the preferred option. Whey protein is generally more cost-effective, tastes better, and has a more robust amino acid profile, making it an overall superior option for individuals looking to support their dietary protein goals. Additionally, individuals who prefer a finer texture and smoother consistency might find plant-based powders less satisfying compared to whey.
Expert opinion
“The addition of 2.2 g of L-leucine makes this blend ideal and a well-rounded recovery protein for vegan and vegetarians. Being able to have the same amino acid profile as a whey blend is important when looking for optimal recovery,” says Burgess.
What customers are saying
Onnit Plant-Based Protein is rated 4.3 out of 5 stars on Amazon, with customers enjoying this product’s taste and vegan-friendly ingredients. However, some consumers have had issues with customer service and receiving a different flavor than what was ordered.
“Tastes great! I use this product to help achieve my daily goal of protein. Nice and chocolatey.”
Tammy Frenette, Amazon
Michael Herdman also left a review, saying it’s a good plant-based protein but he’s consistently being sent the wrong flavor. “As far as plant-based (pea) proteins go, this tastes pretty good. It mixes well and has great nutritional values – no sugary bloat inflating calorie counts. But, of the 3 vanillas which I have ordered, I have only ended up with Vanilla once. The last two canisters have come in Chocolate. Both flavors are good, but I WANT VANILLA!! And to make matters worse, both of the last two cans of this stuff are externally marked as vanilla, so some doofus in the factory has made quite a mixup.”
Specs
| Servings per container | 20 |
| Price per serving | $2.25 |
| Protein per serving | 20 to 21 grams (depending on flavor) |
| Protein source | Pea protein concentrate, pumpkin seed protein, sunflower seed protein, watermelon seed protein |
| Calories per serving | 100 to 110 (depending on flavor) |
| Flavors | Chocolate, vanilla |
| Sweetener | Stevia, monk fruit extract |
Key product features
What you should know
Onnit Protein Bites are a delicious, bite-sized snack that combines natural ingredients with seven to nine grams of protein, perfect for satisfying cravings while on the go.
- Onnit Protein Bites are notably smaller than your typical protein bar and designed to be enjoyed in just one or two bites. While they pack in great flavor, they’re more of a light snack than a meal replacement, ideal for satisfying cravings without feeling too heavy.
- Onnit Protein Bites are priced at $1.66 per bar, making them a budget-friendly option compared to many protein bars that often exceed $2.00. However, with only seven to nine grams of protein per serving, they don’t quite measure up to a traditional protein bar in terms of protein content.
- Onnit Protein Bites are intended for those who enjoy snacking between meals or need something fast and portable for post-workout recovery. These bites are available in five indulgent flavors, including chocolate coconut cashew, chocolate peanut butter, chocolate s’mores, white chocolate, and chocolate cookie dough, making them a great way to supplement your protein intake while also satisfying your sweet tooth.
Our take on Onnit Protein Bites
Onnit Protein Bites are a delicious and convenient snack designed to provide a quick boost of energy in a small, bite-sized form. Despite their size, they pack in a good amount of nutrition, including seven to nine grams of grass-fed protein per bite, along with some dietary fiber to help with digestion and satiety. (8)
In addition to the protein, these bites provide five to seven grams of fat and 14 to 16 grams of carbohydrates, depending on your chosen flavor. This gives them a macronutrient profile that’s more similar to an energy bar than a traditional protein bar, but makes them a great option for pre-workout fuel or post-workout recovery.
Onnit Protein Bites feature PreB, a fermented prebiotic superfood blend that’s designed to support overall health. (9) This unique ingredient combines over 50 different fruits, vegetables, legumes, and whole grains, providing a wide array of nutrients and dietary fiber designed to enhance gut health and nutrient absorption. However, Onnit does not specify the exact amount of PreB included in each bite, making it challenging to determine the precise impact of this blend on digestion and overall wellness.
In terms of flavors, Onnit Protein Bites come in five chocolate-forward options, including chocolate coconut cashew, chocolate peanut butter, chocolate s’mores, white chocolate, and chocolate cookie dough. Note that each bite is dipped in chocolate, giving them an indulgent, candy bar-like taste and feel.
While the chocolate coating is delicious, from personal experience, it can also be messy. When I left one of these protein bars in my gym bag, the chocolate coating melted, making it difficult to eat. While this isn’t Onnit’s fault, it’s worth noting that the bites will melt in warm conditions. Despite this, I loved the flavor and found these bites to be a tasty post-workout treat and a satisfying way to curb my sweet tooth after dinner.
Who Onnit Protein Bites is recommended for:
Onnit Protein Bites are ideal for anyone needing a quick energy boost, a convenient post-workout snack, or a way to indulge sweet cravings while staying on track with their diet. These bites expertly balance a dose of protein with a touch of chocolate-coated indulgence, making them a delicious and satisfying option that doesn’t compromise your nutritional goals.
Who Onnit Protein Bites is not recommended for:
Onnit Protein Bites may not be the best choice for those looking for a high-protein meal replacement or a substantial snack that provides a significant protein boost. They also may not be suitable for individuals with specific dietary restrictions or sensitivities, as the bites contain a host of common allergens such as coconut, peanuts, milk, soy, and sesame.
Expert opinion
“With the nutrient profile in these bites, they are perfect for an after-workout snack. Post-workout protein intake should be around 0.2 g/lb of body weight and 0.4 g/lb for carbohydrate intake. Although this won’t reach that exact amount, it can supplement your other post-workout food or drink to help reach the total needed,” says Burgess.
What customers are saying
Onnit Protein Bites have earned a 4.2 out of 5-star rating on Amazon, with customers enjoying this product’s various flavor options and overall taste. The only real complaint has to do with the chocolate coating on the bites, with comments that it melts quickly and makes eating the bars feel messy.
“I bought these as part of my keto meal plan, and they help after a workout as well as a tasty treat when you want one. Great flavor and low calories.”
Stephan Berry, Amazon
Verified buyer Erirck Pedroza purchased the chocolate cookie dough flavor and said, “Honestly I just love the flavor they give me the right amount of energy you need when you need it, get them while you can you’ll see why the sell out quickly on Amazon or Onnit’s site.”
A review from Justin B. didn’t have such a positive experience, noting, “Just ok… Tastes pretty good but the chocolate looks extremely old. It’s discolored and it is very flakey. Looks like it has melted and/or frozen.”
Specs
| Servings per container | 24 |
| Price per serving | $1.66 |
| Protein per serving | 7 to 9 grams (depending on flavor) |
| Protein source | Grass-fed milk protein isolate, grass-fed whey protein isolate |
| Calories per serving | 120 to 140 (depending on flavor) |
| Flavors | Chocolate coconut cashew, chocolate cookie dough, chocolate peanut butter, chocolate s’mores, white chocolate |
| Sweetener | Tapioca syrup, organic agave syrup, cane sugar, brown sugar, stevia |
How we test protein supplements
We’re committed to providing protein supplement reviews you can trust. That means testing each product we recommend, providing you with genuine and impartial feedback. Learn more about our supplements testing methodology and our testing methodologies for whey protein powder and plant-based protein powder for more information on each factor. From ingredient purity to efficacy to taste and more, here’s how we evaluated the protein powders in this review.
Efficacy—40%
Consumers turn to dietary supplements to achieve specific health benefits and reach their performance goals, which is why we examine whether a supplement delivers on its promised benefits. Efficacy doesn’t just mean the effectiveness of the product in achieving its claims, but also the evidence that supports those claims.
Here’s what we look for:
- Clinical evidence
- Calories per serving
- Dose efficacy
- Synergistic effects
- Proprietary blends
Safety and side effects—35%
Health risks, adverse effects, and safety profiles are all factors to consider in a supplement. We ensure the safety of these products through testing, so you can trust the safety of the products you purchase.
We evaluate:
- Reported side effects
- Third-party testing
- Manufacturer accreditation
- Artificial sweeteners
Value—20%
Value isn’t just price—it’s also quality and efficacy for the price. We factor in a cost analysis to determine the true worth of a supplement in relation to its price and identify products that offer a solid return on investment.
Our factors in this rating include:
- Price per serving
Customer experience—5%
A customer’s experience with a company directly impacts satisfaction, loyalty, and the likelihood of repeat purchases. We include it in our testing process because the consumer experience guides purchasing decisions.
Our factors in this rating include:
- Ease of purchase
- Shipping and returns
- Customer support
Why is Onnit protein powder so expensive?
While Onnit’s protein powders may seem pricey at first glance, their costs align with the market average for protein supplements. To provide a thorough cost comparison analysis, I referenced our articles on Best Protein Powders of 2024 and the Best Vegan Protein Powders of 2024, which include a range of budget-friendly to premium options.
On average, whey protein supplements cost $2.08 per serving and plant-based protein powders average $2.18 per serving. In comparison, Onnit’s Whey Protein is priced at $2.00 per serving, slightly below the industry average, while Onnit’s Plant-Based Protein costs $2.25 per serving, slightly above the average.
Why does Onnit add L-leucine to its plant-based protein powder?
Onnit likely adds L-leucine to its plant-based protein powder to help boost muscle protein synthesis, the process by which the body builds new muscle tissue. (5) L-leucine, an essential branched-chain amino acid, is pivotal in stimulating muscle growth and repair. (10)
Although plant-based protein blends like Onnit’s combination of pea, pumpkin seed, sunflower seed, and watermelon seed protein, provide a complete amino acid profile, they often fall short in L-leucine content compared to whey-based alternatives. (6) Onnit added 2.2 g of L-leucine in each serving, which is the ideal amount for muscle recovery (2-3 g). By incorporating this critical amino acid, Onnit’s protein powder stands out as a top choice for those aiming to maximize their muscle gains and recovery with a plant-based protein supplement.
Do the probiotics in Onnit whey protein help with digestion?
Yes, the probiotics in Onnit Whey Protein may help with digestion. Probiotics are beneficial bacteria that support a healthy gut microbiome by breaking down food and absorbing nutrients. (3) By including Lactobacillus acidophilus, Onnit Whey Protein may help promote digestive health, reduce bloating, and enhance nutrient absorption. (4) This can be particularly beneficial for individuals who experience digestive discomfort from other protein powders or those looking to boost their gut health while maintaining their protein intake.
Do the enzymes in Onnit whey protein help with digestion?
Onnit Whey Protein contains a few unique enzymes that may support digestion. Here’s how each enzyme may help:
- Protease: Helps break down protein into smaller peptides and amino acids, making them easier for the body to absorb. (2)
- Amylase: Aids in the digestion of carbohydrates by breaking them down into simple sugars. (2)
- Lipase: Assists in digesting fats by breaking them down into fatty acids. (2)
- Cellulase: Helps break down cellulose, a component of fruits, vegetables, grains, and legumes, improving the digestion and absorption of plant-based ingredients. (11)
- Lactase: Key enzyme for breaking down lactose, the primary sugar in dairy products. (2)
- Bromelain and papain: These enzymes are derived from pineapple and papaya, respectively, and may aid in the breakdown of proteins and reduce inflammation. (12)
The inclusion of these enzymes may support digestion and enhance nutrient absorption, making it easier for the body to utilize the protein and other nutrients from your meals more effectively.
FAQs
What protein does Joe Rogan use?
Joe Rogan has mentioned using a variety of different protein supplements over the years, including Onnit Whey Protein. However, Rogan was a co-founder of Onnit before it was sold to Unilever in 2021, and his podcast the Joe Rogan Experience often advertised for the Onnit brand. While Rogan is known for being selective about his supplement regime, often discussing their benefits and how they fit into his fitness routine, it’s important to remember that his endorsement should not be the sole reason for choosing a supplement. Ultimately, only you can assess whether Onnit’s supplements align with your personal health and fitness goals.
Is Onnit whey protein better because it’s grass-fed?
Grass-fed whey protein is sourced from cows that graze on a natural grass diet, which often results in a higher-quality supplement with a richer nutrient profile. This method can lead to increased levels of beneficial nutrients like omega-3 fatty acids, vitamin E, and conjugated linoleic acid compared to conventionally raised cows. (13) However, Onnit purifies its whey protein into an isolate form, which removes a majority of the fat and carbohydrates found in milk proteins and, therefore, minimizes the potential benefits. While grass-fed whey may offer slight advantages, the overall impact on health and nutrition will be relatively small.
Is Onnit protein powder third-party tested?
Yes, Onnit’s protein powders are third-party tested for purity and banned substances. This process helps ensure that customers receive a safe and effective product that adheres to high quality standards.
These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any diseases.
Our experts
Victoria Burgess, Ph.D., CSCS, CISSN
Victoria Burgess earned her Ph.D. in Health and Human Performance from Concordia University Chicago and holds her NSCA CSCS and Certified Sports Nutritionist (CISSN). She is an adjunct professor in the Human Performance and Nutrition department at Concordia University Chicago & Parker University, where she teaches undergraduate, graduate, and doctoral-level courses.
Joana Neziri, M.S., NASM CPT
Joana is a writer, editor, and content strategist focusing on nutrition, fitness, and all things health. After earning a master’s degree in business from the University of North Florida, she began a career in research and digital marketing.
Jessica Coulon
Jessica is a contributing editor and writer who specializes in fitness, health, nutrition, and science content. Previously, she was an editor for Popular Mechanics and Bicycling, where she covered pro cycling news, wrote how-to guides, and tested all the latest and greatest bike gear. She was also a regular shoe tester and contributor for Runner’s World. You can often find her skiing or riding her mountain bike, and racing with the F1RE female enduro team.
Kelly Uhler
Kelly has a multifaceted background in elder care, health care, and copywriting. She has worked for organizations such as A Place For Mom and Homecare.com, which gave her the opportunity to work closely with families, providing reliable information to help them make informed decisions about their loved one’s health, safety, and quality of life.
Pete Nastasi, CPT, CSNC
Fortune Recommends Fitness and Nutrition Writer