Most healthcare professionals also warn against over-consumption of supplements on the whole as excessive intake may have side-effects such as nausea and kidney stones.
The common view is to be wary of product claims because they usually cite 'anecdotal' results. 'Trials on vitamins may also not be as stringent and comprehensive as trials on medications like aspirin,' says family physician Dr Melvin Tan.
This gives rise to problems when people buy everything over the counter and mix and match.
'Always read the label and know what you are buying,' advises Dr Tan.
Different products may contain the same ingredients, so even if you are consuming the recommended amounts, you are still in excess of the amount needed daily.
Also, if you are on medication, always check with your doctor before taking supplements because there might be side-effects stemming from interaction between the two.