I take 20 mg once a day in the morning.

Comment: I have been taking 150 mg a day for 15 years.

You should not take more than 1.5mg of vitamin A per day.

I only take 500 mg in the evening at this time.

Answer: At his weight he can take 300 mg by mouth every 6 hours with food.

Children under 14 should not take more than 40 mg a day.

Comment: I have been taking 300 mg for 6 months.

I take 2.5mg every night and within 30 minutes I'm out!

It took about 2 months of taking 100 mg at night for me to begin to see results.

Do not take more than 4,000 mg in a 24-hour period.