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Virtually Lactose Free

Isolate-Only Whey Protein

$33.99

Meet your new daily essential: a clean, powerful, versatile Whey Isolate Protein Powder with 25g of protein and only 100 calories per serving. Virtually lactose-free and gut-friendly, it delivers high-impact nutrition without artificial ingredients or digestive drama. Whether you're building lean muscle, supporting recovery, or supplementing meals, this unflavored whey isolate fits seamlessly into your routine - shake it, blend it, bake it, make it your own. Pair with Gainful flavor packets to change your protein flavor every day!

14 servings
28 servings
42 servings
Choose your flavor packets
for your unflavored protein
Your protein is unsweetened and unflavored
Select Flavor 7 individual flavor packets

California Prop 65

Warning: Consuming this product can expose you to chemicals including lead which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov/food

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Pure Power,

No Compromise

Benefits and Function

25g of Clean Protein: Helps build and maintain lean muscle mass without unnecessary additives.

Virtually Lactose-Free: Gentle on the stomach, perfect for those with sensitivities.

Only 100 Calories: Maximize your protein intake without the excess.

Unflavored & Ultra-Versatile: Mix into any recipe, smoothie, or shake without altering taste.

No Artificial Ingredients: Just high-quality protein you can trust.

Ingredient List

Whey Protein Isolate, Sunflower Lecithin

Contains: MILK

Additional Information
  • No significant difference has been shown between milk derived from rBST-treated and non-rBST-treated cows.
  • Use this product as a food supplement only. Do not use for weight reduction.
  • Store in a cool, dry place.
  • To Gainful, "clean" means our products are made with simple, purposeful ingredients - no artificial sweeteners, artificial flavors, dyes, synthetic fillers, or unnecessary additives. We focus on transparency, quality sourcing, and formulas that do exactly what they're supposed to. Every ingredient serves a clear function, and we keep the list short, because less can truly be more.
How to Use

Combine 1 scoop of Gainful Protein with 8-12 oz of any milk of your choice. Mix in 1 delicious flavor packet, shake vigorously, and enjoy!

Gainful protein is unflavored for maximum versatility. Also delicious in smoothies and baked goods!

Nutrition Facts

Ingredients (2)

Whey Protein Isolate
Sunflower Lecithin
01 Whey Protein Isolate Our USA-sourced, traceable whey protein isolate is a highly purified form of whey with high protein content, minimal fats, carbs, and lactose. Fast-absorbing and rich in essential amino acids, it supports muscle recovery and lean growth without excess calories. Its clean taste and versatility make it a top choice for a high-quality protein powder.
Clincal Study 1 Clinical Study 2
02 Sunflower Lecithin Whey protein is typically sprayed with sunflower lecithin to improve mixability, preventing clumping and making it easier to dissolve in liquids. Sunflower lecithin is a natural emulsifier derived from sunflower seeds, but it's not the same as refined seed oils used in cooking. It contains phospholipids that support cell health and digestion.
  • HOW IT WORKS

Meet our

Isolate-Only

Whey Formula

100% whey protein isolate for even the most sensitive stomachs

01

The cleanest
unflavored protein

Limited-ingredient recipes, with nothing artificial. Only highly effective ingredients in clinically studied amounts.

02

Flavor Packets -
a Gainful exclusive

The only brand with unflavored protein + individual flavor packets that allow you to change your flavor daily.

03

Endless ways
to enjoy

Shake up your flavor every day with Gainful’s Flavor Packets. Endless variety in one protein.

  • OUR QUIZ

Find your
perfect protein

Take our short quiz to discover which

protein is right for you and your goals

7 Clean and Unique Formulas for Your Personal Goals

Your questions,
answered.

Are Gainful products 3rd party tested?
Yes - we regularly conduct third party testing on our products. All of our products are manufactured in NSF-certified cGMP facilities, the highest standard for supplement manufacturing. Each raw material is checked for safety and potency. Every Gainful supplement is third party tested for heavy metals and microbial contamination to ensure food safety. Our products also undergo rotational nutrient, contaminant, and adulterant testing to ensure potency, purity, and safety of ingredients, bringing you only high-quality products and peace of mind with every scoop.
Which protein is right for me?
We know performance is personal, so we offer a variety of protein blends to help you meet your specific goals. Not sure where to start? Take our quick 2-minute quiz — we’ll ask about your diet, fitness routine, and health goals to recommend the protein blend that’s right for you.
How is Gainful protein different?
Our mission is to bring you premium, transparent, limited-ingredient protein. We use clean, effective ingredients in clinically-studied amounts, with nothing artificial, ever. Our products are 3rd-party tested for safety and efficacy. We know performance is personal, and that's why we offer a variety of products and customization that gets you what you need for your body and your goals. Plus - all Gainful proteins come unflavored, and we are the only brand with flavor packets that help you unlock a new protein flavor every day!
Is whey protein better than plant-based protein?
Whey protein is a great option if you tolerate dairy — it’s a complete protein with all 9 essential amino acids and is rich in micronutrients like calcium. For those who are lactose intolerant, Gainful offers virtually lactose-free whey options as well! Prefer plant-based? No problem. Our plant proteins combine organic pea and rice protein in a smooth, easily-digested blend to form a complete amino acid profile, so you’ll still get all the benefits of a high-quality protein blend!
What time of day should I take protein?
What matters most is hitting your daily protein goals, not the exact timing. Spreading your intake across meals can help with fullness and muscle maintenance. If you're focused on building muscle or recovery, protein after a workout is ideal. Taking it before bed can also support overnight muscle repair. No matter when you take it, you'll get the benefits!

How our flavor packets work

Step 1
Add 1 scoop of our unflavored protein to 8-12 oz of any ice cold milk or water

Step 2
Add 1 flavor packet to your shake

Step 3
Shake for 30 seconds and enjoy!

FLAVOR PACKETS

Nutrition Facts

Rich Chocolate
Sea Salt Caramel
Madagascar Vanilla
Caffé Mocha
Strawberry Cream
Chocolate Peanut Butter
Cookies & Cream
Cinnamon Toast

Variety pack consists of:

Rich Chocolate, Sea Salt Caramel, Madagascar Vanilla, Strawberry Cream, Chocolate Peanut Butter, Cookies & Cream and Cinnamon Toast