Can you trust supplement advice from gym shop staff in South Africa?

Why is shop advice a conflict of interest?

Staff in gym shops and supplement stores sell products. Many are knowledgeable, but the incentives (commission, targets, brand promotions) push toward more products, higher-margin brands and "stacks". That does not make them dishonest. It means you should check what they say.

What qualifications should you look for?

SAIDS advises athletes to see a registered sports dietitian before using supplements, and notes that products from well-known brands, stores or pharmacies can still contain undeclared banned substances.

What are the red flags?

• Selling a "stack" of five products to a beginner. Beginners need, at most, creatine and perhaps protein; see what a gym beginner should buy first.
• Fat burners, "testosterone boosters" or prohormone-style products recommended without questions about age, health and medication.
• Pre-workouts for teenagers. Not appropriate; see can teenagers take pre-workout.
• Claims such as "clinically proven", "SAHPRA approved" or "WADA approved". SAIDS says none of these apply to supplement brands; see is "clinically proven" legal.
• Pressure to buy the biggest tub or a bundle without comparing cost per dose.
• No answer on dose. Ask how much of the active ingredient is in a serving.

How do you test advice quickly?

1. Ask what evidence supports it and whether the study used the same dose and population.
2. Check against reference points: creatine 3-5 g, protein 1.4-2.0 g/kg, caffeine 3-6 mg/kg, per the ISSN. See which supplements actually work.
3. Convert to cost per dose. See how to compare supplement prices.
4. Take a photo of the label and check it at home, away from the sales conversation.
5. For medical questions, go to a doctor, dietitian or pharmacist.

What about gyms that sell supplements?

Gyms often sell brands under wholesale arrangements; some suppliers, ATP Fitness included, sell through gyms and wholesale channels. A gym's own recommendation may reflect the supply deal. That is a reason to check, not to avoid them.

What about minors and athletes?

For school athletes, SAIDS and BokSmart emphasise food first, and SAIDS recommends against performance supplements for under-18s. For drug-tested adults, "the shop sells it" is not a defence under strict liability. Read what third-party tested means.

A note on this site

Healthnews24 is independent of the brands it covers. Comparisons follow the published method and always list trade-offs.