> I take 10,000 IU with vitamin K about 5x/week. I am 35 now and I happened to check my levels around Jan 2020, to make sure I wasn’t overdoing it. I was at 53 ng/mL, which was perfect.
As a counter example, I took 5,000 IU per day and almost ended up over the 100ng/dL upper limit. I had to reduce my supplementation to avoid overdose.
Vitamin D supplementation is very person-dependent, so I recommend anyone supplementing with higher dose supplements (5000IU and up) check their blood levels every few years.
As a counter example, I took 5,000 IU per day and almost ended up over the 100ng/dL upper limit. I had to reduce my supplementation to avoid overdose.
Vitamin D supplementation is very person-dependent, so I recommend anyone supplementing with higher dose supplements (5000IU and up) check their blood levels every few years.