Whey Protein

Muscle building & fitness

Function & benefits

Protein contributes to the growth and maintenance of muscle mass (an EFSA-authorised claim for protein). Whey is absorbed quickly and is rich in essential amino acids and leucine.

Dosage & how to use

Recommended dose	20–30 g
Best time to take	After training or between meals
Frequency	1–2 times daily

Important warnings

Avoid it if you have a severe cow’s milk allergy

With lactose intolerance, whey isolate is preferred

People with kidney failure should count their total protein intake

Drug interactions

Take it two hours apart from osteoporosis drugs (bisphosphonates) and antibiotics (quinolones and tetracyclines), because its calcium reduces their absorption.

Scientific references

EFSA Journal 2010;8(10):1811 (protein and muscle mass)
NIH ODS: Dietary Supplements for Exercise and Athletic Performance

View in the supplements guide

Related supplements

📚 Published sources and research: European Food Safety Authority (EFSA) • National Institutes of Health (NIH - ODS) • PubMed / Cochrane databases

Content last updated: 17 October 2026 · Based on published sources and research (EFSA / NIH / PubMed)

⚖️ Medical disclaimer: The information and data provided here are for health education and nutritional guidance only. They are not a medical diagnosis and never replace a direct consultation with your doctor or pharmacist. Always consult your doctor before starting any supplement, especially during pregnancy or breastfeeding or when taking long-term medication.