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Vitamins and supplements: what you need to know before taking them

Posted 03 February 2023

The Conversation

If you were to open your medicine cabinet right now, there’s a fair chance that you’d find at least one bottle of vitamins alongside the painkillers, plasters and cough syrup.

After all, people are definitely buying vitamins: in 2020, the global market for complementary and alternative medicines, which includes multivitamin supplements, had an estimated value of US$82.27 billion. The use of natural health products such as minerals and amino acids has increased – and continues to rise, partly driven by consumers’ buying habits during the COVID-19 pandemic.

People sought out vitamins C and D, as well as zinc supplements, as potential preventive measures against the virus – even though the evidence for their efficacy was, and remains, inconclusive.

Multivitamins and mineral supplements are easily accessible to consumers. They are often marketed for their health claims and benefits – sometimes unsubstantiated. But their … Read the rest

Does Zinc Really Help Treat a Cold?

Posted 02 November 2021

In 1771, the German physician Hieronymus David Gaubius introduced the western scientific community to “a medication with many promises” – zinc.

More than 200 years later, we can find it amongst the many supplements on pharmacy shelves. It’s even known to be one of the rare things that might help fight off a common cold. Or does it?

Evidence for zinc supplement use is limited, study results have been mixed, and dosage, formulation and length of prescription have not been investigated properly to date.

A new meta-analysis of 28 randomized controlled trials has now strengthened the notion that supplementing zinc could prevent symptoms and shorten the duration of viral respiratory infections, like the common cold or the flu.

“It is commonly thought that zinc’s role in preventing and treating infections is only for people who are zinc deficient; our findings

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