Warning
The only pre-caution is similar to that of drinking black tea---rooibos has a low level of tannin, which is known to slow down the absorption of iron in consumed foods. This side effect is notable for people with iron deficiencies; they should check with a doctor before adding the tea to their daily diets. Amongst the many benefits of this powerful herbal tea is that it is caffeine-free, so it is safe for young children, the elderly and those with caffeine sensitivities.