Question

how much of vitamin- d should be taken by an adult ?

Answer 1

Here you go...

All things considered, a daily vitamin D intake of 1000–4000 IU, or 25–100 micrograms, should be enough to ensure optimal blood levels in most people. 4000 IU is the safe upper limit .

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Answer 2

$\huge\mathbb\red{ANSWER!!!!}$

• Healthy adults can take 2,000-3,000 units per day in supplement form.