Recommended dietary allowance of vitamin A for adults is
The RDA of vitamin A for adults is around 1000 retinol equivalents (3,500 lU) for man and 800 retinol equivalents (2,500 lU) for woman.
Reference: Satyanarayana- Biochemistry, 3rd edition, pg-122
3500 IU for man and 2500 IU for woman
3000 IU for man and 2000 IU for woman
4000 IU for man and 3000 IU for woman
4500 IU for man and 3500 IU for woman