Evidence Based Research
Our editorial team is made up of expert registered dietitians with extensive, real-world clinical experience who are highly trained in evaluating clinical research.
Read Our Editorial Policy

Gainful Protein Powder Review: Pros, Cons, and Analysis of Benefits

Written by Melissa Mitri, MS, RD

Published on March 23, 2021

Our Expert Rating:


About This Rating
The average rating of this product is calculated based on the evaluation of the following factors:
  • Support for Claims:3.5
  • Ingredient Safety:4.0
  • Value for the Price:4.0
  • Brand Transparency:5.0

Gainful protein is a personalized nutrition protein powder. I would recommend it to the active person who is looking to add a quality protein powder to their routine.

Gainful Protein Powder Review: Pros, Cons, and Analysis of Benefits


  • Personalized nutrition formula
  • Access to registered dietitians
  • Free delivery with subscription


  • High cost
  • May not be suitable for those with allergies
  • Contain fat sources that can be pro-inflammatory


Gainful is a subscription-based company that sells protein powder and workout beverages designed to meet your health goals. The claims are that it may support weight loss and muscle gains.

They deliver a personalized protein formula blend that matches the individual’s goals, activity level, and preferences.

On the website, you are advised to take a quiz to see which protein formula is best for you. You are then provided with a customized suggestion along with unlimited access to a registered dietitian for advice.

The “complete” Gainful system is also promoted and includes a personalized protein powder, hydration beverage, and pre-workout formula.

All protein powders come unflavored, but you can add in a “flavor boost” pack.

The Gainful protein powder contains 7 ingredients – a protein source, a complex carb, oils, herbal extracts, and sweeteners.

It is labeled as a “clean” product. This means it doesn’t contain any artificial ingredients, dyes, or sweeteners. It is gluten, dairy, and soy-free. It also is considered vegan and keto-friendly.

While it is directly free of all major food allergens, it is manufactured in a facility that may still process other products containing these allergens.

For this review, I will be mainly discussing the protein powder and briefly cover the hydration beverage and pre-workout formula products.

Evaluation of Ingredients

Each Gainful Protein Powder formula contains 7 GMO-free ingredients or less, but each product is individualized.

There are 4 categories of ingredients present – protein, oils or fats, starches, and sweeteners.

1. Protein Source

There are 6 powdered protein source options:

  • Organic pea protein: A plant-based protein made from yellow peas. This type of protein can aid in muscle growth and repair.
  • Brown rice protein: Made from brown rice, this is easily absorbed in the body. Studies show it may improve body composition and exercise performance.
  • Whey protein isolate: An easily digestible protein source made from milk. It is higher in protein but lower in carbs and fat than whey protein concentrate.
  • Whey protein concentrate: A high-quality protein milk protein that can support muscle gains. It contains more of a balance of protein, fats, and carbs than isolate.
  • Micellar Casein: A slow-digesting protein made from milk. Because it is slower-digesting, it may help you feel full longer.
  • BCAA blend: Otherwise known as branched-chain amino acids, these are 3 essential amino acids (leucine, isoleucine, and valine) that make up 35% of your muscle. There is a small amount of research on BCAA’s and reduced recovery time, but some research is inconsistent.

2. Oils

  • Organic sunflower oil: Sunflower oil is made from organic sunflower seeds. While okay in moderation, sunflower oil contains a fat called linoleic acid (LA). Too much LA may increase inflammation in the body.
  • Coconut oil: Coconut oil contains MCTs (medium-chain triglycerides), which are easily digestible fats. However, they may increase risk factors for heart disease.

3. Starch – Organic Oat Powder

Oat powder is a slow-digesting carbohydrate that can sustain your energy between meals. It also may aid in post-workout recovery.

4. Natural Sweeteners

  • Organic stevia leaf extract: A zero-calorie, natural sweetener.
  • Green tea extract: Extract from green tea leaves. Due to its caffeine content, it may also provide a slight boost in performance.

Hydration Beverage and Pre-Workout Formula

  • The hydration drinks contain water, electrolytes, caffeine, and natural sugars claimed to help you perform at your best. Research shows staying properly hydrated can aid in muscle recovery, so you make the most use of the protein you’re taking in.
  • The pre-workout drinks contain caffeine, L-theanine, and branched-chain amino acids (BCAAs). These amino acids are said to reduce recovery time. However, the research on this shows mixed results.

Verdict on Claimed Benefits

Below is our summary of the available evidence for the claimed benefits of Gainful Protein Powder based on the available research:

  • Build muscleStrong Evidence
  • Weight lossModerate Evidence

There is some research that increasing protein intake can support weight loss. This is likely to be most effective if you’re already not consuming enough protein from your diet.

These proteins can help build muscle in those who are active and have higher protein needs. Studies have shown taking protein supplements along with a nutritious diet can improve muscle mass and performance.

Side Effects, Safety, and Dosage

The dose is 1–2 scoops of protein powder mixed with your favorite beverage. It can also be mixed with smoothies, oats, peanut butter, vegetables, or fruits.

Most protein powders, including Gainful, have little to no side effects for most people.

For those sensitive to lactose, consuming the whey or casein-based protein powder may cause digestive issues.

For this, Gainful plant-based proteins like pea or brown rice would be a good alternative.


The cost for Gainful protein powder is $39 per month as a subscription-based program.

This price includes 14 flavor boost packets along with unlimited access to a dietitian.

It can be ordered directly from the manufacturer’s website.

How It Compares

Gainful is more costly than other protein powders but has ingredients that are screened to assure quality.

There is a personal formula designed for each person, which other protein companies generally do not do. This is important because everyone has different goals, preferences, and protein requirements.

It is also the only protein company I’m aware of that allows unlimited access to a registered dietitian. These dietitians on staff also help to create personalized formulas.

The Bottom Line

Gainful protein powder can be helpful if you are an active person looking to increase your protein intake.

While this protein powder is more expensive than many other brands, it is of high quality and is individualized, which leads to better results.

A Word from Our RD

If you are interested in trying this protein powder, taking the online quiz can help determine what protein formula blend is right for you. This will help you get the most benefits out of taking it.

My clients who consume enough protein from either food or supplement sources tend to feel more satisfied in between their meals. This may help with weight loss and building lean muscle.

Additionally, taking the protein powder alongside the hydration and pre-workout beverage for the “complete” formula may lead to further health benefits.

Was This Article Helpful?YesNo
Thanks for your feedback!
In a few words, please tell us how this article helped you today.
Please let us know how we can improve this article by selecting your concern below.
Thank You! We appreciate your feedback.
* Please select at least one topic:
Please Note: We cannot provide medical advice. This feedback will help us continue improving your user experience on WellnessVerge.
Please Note: We cannot provide medical advice. This feedback will help us continue improving your user experience on WellnessVerge.
Submit Feedback
Submit Feedback

At WellnessVerge, we only use primary references for our articles, including peer reviewed medical journals or well-respected academic institutions.