A member asked:

Is it safe to take high doses of vitamin while also taking a with a high strength retinal?

A doctor has provided 1 answer

No: High doses of vitamin a, greater than 25, 000 iu per day, can create a toxic hepatitis. If for any reason your total intake between vegetables and supplements exceeds that level as an adult, your liver function must be measured at least every 6 months. High doses in children limits long bone growth and stunts height development.

Answered 8/1/2012

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