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Goal

Sports Nutrition

Products used around training and competition. Athletes in tested sport should look for named banned-substance programs and confirm them in the certifier’s listing.

Ingredients researchers have studied

AMINO ACID DERIVATIVE

Creatine

One of the most researched sports supplements. Forms and formats vary widely in cost per 5 g.

Studied for: High-intensity exercise performance · Lean mass with resistance training
MACRONUTRIENT

Protein

Protein powders provide concentrated protein from dairy (whey, casein) or plants (pea, soy, rice and blends). They diffe

Studied for: Muscle with resistance training
MINERAL BLEND

Electrolytes

Electrolyte products combine sodium, potassium, chloride and sometimes magnesium, usually as drink mixes or tablets. The

Research in progress

Comparisons

CREATINE

Powder vs Gummies

Compare serving size, convenience and cost per serving.

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PROTEIN

Whey vs Plant Protein

Amino acids, dietary fit and cost per 20 g protein.

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Products

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Guides

CREATINE

How to Compare Creatine Supplements

Form, grams per serving, format, other ingredients, testing and cost per 5 g.
TESTING

What Does NSF Certified Mean?

NSF/ANSI 173 vs NSF Certified for Sport, and how to check a listing.

This page is educational and is not medical advice. Talk to a healthcare professional before starting a supplement, especially if you have a medical condition, take medications, or are pregnant or breastfeeding.