what is the regular dosage of vitamin a as beta carotene one should use
1 If people still remain too sensitive to the sun using these doses, beta-carotene can be increased by 30-60 mg per day for children under 16 years old, and up to a total of 300 mg per day for people older than age 16. 2  For preventing sunburn in sun-sensitive people: beta-carotene 25 mg orally daily.