Supplements
Independent guides to creatine, protein, vitamin D, magnesium, omega-3, caffeine, pre-workouts, multivitamins and interactions.
About this classroom
A supplement is useful only when it solves a real problem at a sensible dose. This classroom separates established uses from plausible marketing, shows you how to read the amount that matters, and treats interactions and product quality as part of the decision rather than fine print.
Where the evidence stands: Evidence varies by ingredient, population and outcome. A result in someone with a deficiency does not prove the same benefit in someone whose intake is already adequate.
What you will learn
- Ingredient guides - What common supplements are, what outcomes have been studied and where claims overreach.
- Read the dose - Find the active amount instead of being distracted by serving size or marketing language.
- Interactions and safety - Medication, surgery, pregnancy, contamination and overlapping ingredients.
- Decide if it is useful - Start with the problem, baseline status and evidence - not the product.
Curriculum
Performance
Common products used around training.
Vitamins & essentials
Popular daily supplements and when context changes the answer.
Safety
The part marketing usually puts in small print.
More performance products
Popular gym and endurance ingredients beyond creatine and caffeine.
Gut & stress products
Products whose evidence depends heavily on strain, extract and population.
Frequently asked
- Do supplements have to prove they work before sale?
- Rules differ by country, but food-supplement regulation is not the same as medicine approval. Availability is not proof of effectiveness.
- Does natural mean safe?
- No. Biologically active ingredients can cause adverse effects and interact with medicines.
- Which supplement builds muscle?
- Resistance training and adequate nutrition do the main work. Creatine and convenient protein can support some people, but neither replaces training.
Sources for this classroom
Educational content only. Not medical advice, diagnosis or treatment. Always consult a qualified healthcare professional before changing your health regimen.