From Live Science:
Any beverage or food containing caffeine such as coffee, tea, chocolate and some sodas can inhibit the absorption of vitamins and minerals and increase their excretion from the body.
This raises a more important question: What are the benefits of vitamins?
It’s very important to talk with your doctor before you take any vitamin and mineral pills, especially if you take prescription medicines, have any health problems or are elderly. Taking too much of a vitamin or mineral can cause problems with some medical tests or interfere with drugs you’re taking.
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