I have recently gotten much more invested in my health, and that has lead to me cutting basically every supplement I was taking short of a few that are really excellent and well studied.
On the back of some vitamin D bottles, you'll see warnings about taking it if you have high calcium levels because it could lead to cardio vascular issues.
While most people considered the risk of supplementation to be low, there appears to be cases where that isn't the case. Be careful.
A lot of supplements are also mislabed or incorrectly dosed, because the regulations are quite lax. So even if a supplement makes sense in theory, you don't know what you're getting unless the manufacturer follows the Good Manufacturing Practices and does some kind of third party testing.
On the back of some vitamin D bottles, you'll see warnings about taking it if you have high calcium levels because it could lead to cardio vascular issues.
While most people considered the risk of supplementation to be low, there appears to be cases where that isn't the case. Be careful.