Health, fitness and the supplement aisle. An independent South African desk.
By sport · Answer
For adult rugby players, the supplements with good evidence are creatine monohydrate (3 to 5 g a day), protein powder to reach 1.4 to 2.0 g per kg a day, caffeine (3 to 6 mg per kg before games) and sports foods such as carbohydrate drinks. Drug-tested players carry strict liability under SAIDS, so only use products with batch testing.
Rugby mixes repeated sprints, collisions and long recovery demands, so the same few supplements apply. Using the Australian Institute of Sport's framework, Group A (strong evidence) includes:
| Supplement | Dose | Why |
|---|---|---|
| Creatine monohydrate | 3 to 5 g/day (ISSN) | repeated high-intensity efforts, strength, lean mass |
| Protein (whey or food) | 1.4 to 2.0 g/kg/day; about 0.25 g/kg per dose | muscle repair and gain |
| Caffeine | 3 to 6 mg/kg about 60 minutes before | sprint and endurance performance |
| Carbohydrate drinks and gels | per match demand | fuel for long training days |
| Vitamin D, iron | only if deficiency is diagnosed | medical supplements |
A 100 kg forward on 1.6 g/kg needs about 160 g of protein a day; food covers most of it, and a scoop of whey fills the gap. See how much protein per day.
Under the World Anti-Doping Code, adopted in South Africa through SAIDS, athletes are strictly liable for anything in their sample, including via a contaminated supplement or one recommended by a coach. SAIDS does not certify, test or endorse any brand, so "SAIDS approved" claims are false. It flags muscle-building, weight-loss and "testosterone booster" products as highest risk. The AIS puts DMAA, DMBA, synephrine, prohormones, SARMs, tribulus and colostrum in its high-risk Group D. BokSmart, SA Rugby's injury-prevention programme, also gives a food-first introduction to supplements.
Batch-tested schemes such as Informed Sport test each batch before release and let you check the batch number online. They reduce but do not eliminate risk. A brand is only certified if it appears on the scheme's public register.
October 2026 prices for single-ingredient creatine monohydrate:
For drug-tested players, certification matters more than price: the gap between ATP and Biogen is about R8 a month at 5 g a day. See best creatine in South Africa and can creatine cause a failed drug test.
Under-18s should follow a food-first approach (supplements for schoolboy sport). SAIDS reported 6 anabolic-steroid positives from 122 tests at the 2018 Craven Week; steroids, not creatine or whey, were the issue. Senior and professional players should work with a union or franchise dietitian.
Pre-workouts with stimulants, fat burners, testosterone boosters and anything with a "proprietary blend". Caffeine alone is monitored by WADA, not banned.
Kidney disease, medication, pregnancy (for women's rugby) and any under-18 should speak to a doctor or registered dietitian before supplementing.
| Product | Size | Price (source, date) | Servings | R per 5 g | Sweeteners |
|---|---|---|---|---|---|
| ATP Fitness Micronised Creatine Monohydrate | 600 g | R500 (ATP Fitness shop, 2026-10) | — | R4.17 | None |
| Biogen Creatine Monohydrate Unflavoured 500 g | 500 g | R445 (Dis-Chem (listing via PriceCheck), 2026-10) | 100 | R4.45 | None (unflavoured) |
| Nutritech Creatine Monohydrate 500 g | 500 g | R249.95-R399 (Wellness Warehouse (listing via PriceCheck), 2026-10) | — | R2.50 | not stated |
Educational information, not medical advice. Speak to a doctor, pharmacist or registered dietitian before using supplements if you are pregnant or breastfeeding, under 18, taking medication, or living with kidney, liver or heart disease. Prices were observed in October 2026 and are not offers.