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Double Duty

Protein Powder

Benefits and Function

Full-Body Support: Whey isolate + collagen peptides fuel muscle recovery while supporting joints, skin, and connective tissues.

Gut Friendly: Virtually lactose-free and easy to digest - no bloat, no discomfort, just clean protein.

Clean Fuel: Delivers 21g of high-quality protein with only 80 calories and zero artificial ingredients.

Flavor Variety: Unflavored and endlessly customizable - perfect in any smoothie or recipe.

Ingredient List

Whey Protein Isolate, Grass-Fed Collagen Peptides, Vitamin C (as Ascorbic Acid), Natural Flavor (to protect flavor), Sunflower Lecithin.

Contains: MILK

Additional Information
  • These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure or prevent any disease.
  • Collagen is not a complete protein.
  • Keep out of reach of children. If you are pregnant, nursing, taking medication, or have a medical condition, please consult your healthcare provider before use.
  • Store in a cool, dry place.
  • No significant difference has been shown between milk derived from rBST-treated and non-rBST-treated cows.
  • 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 (4)

Whey Protein Isolate
Collagen Peptides
Sunflower Lecithin
Vitamin C
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 Collagen Peptides Collagen is the most abundant protein in the body, supporting joints, cartilage, and connective tissues for mobility and strength. Collagen peptides, also called hydrolyzed collagen, are broken down for better absorption. Sourced from bovine, this grass-fed Type I and Type III collagen also helps keep skin hydrated and elastic for an anti-aging boost. Collagen is a great addition to your routine for overall health, mobility, and longevity.
Clinical Study 1 Clinical Study 2
03 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.
04 Vitamin C Vitamin C is a water-soluble vitamin that supports blood vessels, cartilage, muscles, and collagen formation in bones. It plays a key role in collagen synthesis, helping your body maximize the benefits of collagen peptides for healthy skin, joints, and connective tissues. As an antioxidant, it also protects cells from damage, promoting overall wellness. When combined with collagen and whey protein, it enhances tissue repair and supports your body's natural recovery process.
Clinical Study 1 Clinical Study 2
  • HOW IT WORKS

Meet

our Collagen

Whey Formula

A simple, effective, low-lactose blend

of whey and collagen for double-duty support

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.

7 Clean and Unique Formulas for Your Personal Goals