Health, fitness and the supplement aisle. An independent South African desk.
Vitamins and minerals · Answer
Take fat-soluble vitamins (D, A, E, K) and omega-3 with a meal that contains fat, take iron in the morning away from tea, coffee and calcium, and take zinc and magnesium with food. Evening magnesium is a preference, not a proven benefit. Consistency matters more than the clock, and some supplements must be separated from medicines by hours.
| Supplement | Best timing | Why |
|---|---|---|
| Vitamin D (and A, E, K) | With a meal that contains some fat, daily | Fat-soluble; daily dosing is preferred to large intermittent doses |
| Omega-3 fish oil | With a meal containing fat | Better absorption; fewer fishy burps |
| Multivitamin | With a meal | Reduces nausea and aids absorption of fat-soluble parts |
| Iron | Morning, ideally before training or within about 30 minutes after, with vitamin C | Hepcidin rises about 3 to 6 hours after exercise and blocks absorption |
| Zinc | With food | Limits nausea |
| Magnesium | With food; evening is common | Evening is preference, not proven; limits diarrhoea |
| Vitamin B12 | Any time; weekly high doses suit people who forget daily tablets | Absorption is dose-limited, not time-limited |
| Probiotics | Follow the label, daily for several weeks | Effects are strain-specific; storage matters |
No. The key points are daily dosing and a meal with some fat. The supplement does not need to be taken with the sun or at a certain hour. Mind the total dose: the EFSA upper limit is 4 000 IU (100 µg) a day (how much vitamin D to take).
Mostly for iron. Taking it before training or soon after, in the morning, avoids the post-exercise hepcidin peak. For most other vitamins, timing around exercise does not change results. Creatine, caffeine and protein have their own timing rules, which are covered in separate answers.
A simple routine for many South Africans:
Do not take everything at once to save time; do add up the labels so you do not exceed upper limits (can you take too many vitamins?).
Store tablets and softgels in a cool, dry cupboard, not a car or gym bag in a South African summer. Heat and humidity degrade probiotics and oxidise fish oil (storing supplements in South African heat).
If you take prescription medicines, ask your pharmacist whether your timing is safe. Read also iron supplements for runners.
| Product | Size | Price (source, date) | Servings | R per serving | Sweeteners |
|---|---|---|---|---|---|
| Dis-Chem Gold Magnesium Chelate 90 coated tablets | 90 tablets | R300 (Dis-Chem Living Fit, 2026-10) | 60 | R5.00 | not stated |
| Dis-Chem Gold Iron High Strength 30 coated tablets | 30 tablets | R135 (Dis-Chem Living Fit, 2026-10) | 30 | R4.50 | not stated |
| Dis-Chem Gold Vitamin D3 1000 IU 60 tablets | 60 tablets | R160 (Dis-Chem Living Fit, 2026-10) | 60 | R2.67 | 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.