Doctors say you should only take the prescribed dose of certain vitamins, but also not to worry too much about it.
For example, taking too much vitamin C or iron can cause diarrhoea, and too much zinc can reduce the absorption of iron into the blood. But you’d have to consume a lot of vitamin C to get sick (over 1 gram). And vitamin C and zinc in the recommended doses are a good bet to help prevent (or at least reduce the severity of) a winter cold.
Similarly, too much vitamin D causes a build-up of calcium in the blood, but it’s difficult to get too much vitamin D. In fact, many people need more than the recommended daily amount of vitamin D, so it’s safe to take a D supplement while still spending time in the sun and eating a healthy diet of fruits and vegetables including vitamin D.
Are there any ‘bad’ multivitamins out there?
There aren’t any multivitamins that are really ‘bad’ for you, but there are a couple of things to keep in mind.
If you don’t have a diagnosed deficiency, you can steer clear of the ‘Mega’ dose versions. After all, the body can only absorb so much of any one vitamin.
You will also want to know where your multivitamins are being produced. Pharmaceutical companies in Australia are regulated by stringent legislation regarding quality control, while pharmaceutical companies in other countries are not regulated in the same way. So if you’re taking an Aussie brand like Blackmores, Cenovis, or Nature’s Own, you have nothing to fear.