https://www.siliconvalley.com/2022/07/05/how-an-increasingly-popular-supplement-landed-a-man-in-the-hospital/

A British man’s overdose on vitamin D is a cautionary tale for people who are considering adding supplements to their lives, according to a paper published Tuesday in the journal BMJ Case Reports.

After a visit with a private nutritionist, the man began taking more than 20 over-the-counter supplements every day, including 50,000 international units (IU) of vitamin D three times a day. That’s a dose hundreds of times higher than standard nutritional recommendations.