IngredientsProtein ingredient glossary.

Our ingredient glossary includes common protein powder ingredients, their purpose, and safety recommendations based on our research. Empowering you to make informed product choices is our goal. While we do provide a recommendation, you should always discuss using a new supplement with a healthcare professional.
SAFE
CAUTION
AVOID
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Resveratrol
Antioxidant
Resveratrol, a natural compound found in plants, is added to protein powders due to its potential health benefits, including improving heart health and reducing inflammation. It may also improve exercise performance and reduce muscle damage.
Retinol
Vitamin
Synonyms: Vitamin A
Retinol, a form of vitamin A found in animal-derived foods, is also available in synthetic form as a dietary supplement and is sometimes added to protein powders.
Riboflavin
Vitamin
Additive Number: 101
Synonyms: Vitamin B2, Lactoflavin
Riboflavin, also known as Vitamin B2, is a water-soluble vitamin used in protein powders due to its ability to support energy metabolism and protect against oxidative stress.
Ribonuclease
Digestive enzyme
Synonyms:  RNase
Ribonuclease is an enzyme that is sometimes added to protein powders to aid in the digestion and absorption of protein, potentially increasing the bioavailability of dietary protein and improving protein synthesis.
Ribose
Nutrient
Ribose is a naturally occurring sugar in the body that plays a role in energy metabolism. It is sometimes added to protein powders to help improve athletic performance and reduce muscle fatigue by increasing ATP production in the body.
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