Your best D3 value is the 10000 iu in the red bottle at Amazon. $11-— Get your D3 levels tested. Take one 10000 iu gelcap daily and get your D3 up to 75 ng/ml or more
Take this D3 with K2 and a good magnesium supplement such as magnesium glycinate.
This will super boost your immune system. D3 is the sunshine vitamin, so will also give you a sunnier outlook on life. I don’t care how much sun you get. Get your D3 tested and get your levels up to 75 ng/ml
My understanding is that 60-90 ng/ml are optimal. Why do you say 75 ng/ml is the specific target. Is your point that that’s the average of 60 and 90?
I had my d3 levels tested recently they were 68 ng/ml. I have been taking 10iu per day. Morning and evening. sounds like you recommend all in the morning. I get that morning corresponds with sun and circadian rythm. but then you d3 levels go down during the evening. Is your point that that’s natural? And further than you want your melatonin levels to go up as d3 goes down?