Should runners take iron supplements in South Africa?

Why are runners prone to low iron?

Endurance runners can lose iron through foot-strike haemolysis (red cells damaged by repeated impact), gut bleeding, sweat and, in women, menstruation. Hard sessions also raise hepcidin, a hormone that blocks iron absorption, for roughly 3 to 6 hours afterwards. Vegetarians need about 1.8 times more dietary iron because plant iron absorbs poorly. For Comrades, Two Oceans or Cape Epic build-ups, the heaviest training blocks are exactly when stores can fall.

How do you know if you are low?

Haemoglobin alone misses early deficiency, because ferritin can fall before anaemia appears. Sports medicine commonly uses these ferritin staging cut-offs:

Ask your doctor for ferritin, haemoglobin and transferrin saturation. Tiredness has many causes, and not everyone who is tired needs iron.

What does treatment look like?

Oral treatment in athletes is commonly 60 to 120 mg of elemental iron, set and monitored by a doctor, and alternate-day morning dosing may improve absorption. Practical points from the sports-medicine reviews:

• Take it in the morning, ideally before training or within about 30 minutes after it, before hepcidin rises.
• Pair it with vitamin C and keep it away from tea, coffee, calcium and high-dose zinc.
• Proton-pump inhibitors reduce absorption; separate iron from levothyroxine and from quinolone or tetracycline antibiotics.
• Expect constipation or nausea; switching form or dosing days can help.

What do South African iron tablets look like?

As of October 2026, Dis-Chem Gold Iron High Strength supplies 24 mg of elemental iron (amino-acid chelate) per tablet. The 30-tablet pack costs R134.99 (R4.50 a day) and the 120-tablet value pack R274.99 (R2.29 a day), at Dis-Chem Living Fit. The page states it is an unregistered medicine not evaluated by SAHPRA. Metagenics Hemagenics Iron (ferrous bisglycinate, 24 mg per tablet) costs R424.90 for 60, about R7.08 a day. Because a doctor may prescribe a different dose and duration, use these as price references, not self-prescription. More detail is in the best iron supplement in South Africa.

When is iron a bad idea?

• Normal ferritin, because extra iron adds risk without benefit.
• Haemochromatosis or other iron-overload conditions.
• Men and postmenopausal women without a diagnosed deficiency.
• Households with small children: accidental iron overdose is a leading cause of poisoning in young children, so store tablets out of reach.

The NIH upper level for adults is 45 mg of iron a day from supplements. See also do women need iron supplements? and which vitamins and minerals athletes actually need. The AIS lists iron as a Group A medical supplement, to be used under clinical supervision.

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