ask your pharmacist

Are there any vitamins that can help to prevent night blindness?

Vitamin A occurs naturally in many foods, including carrots, apricots, lettuce, and broccoli. If you don't get enough vitamin A from your diet, consider taking a multivitamin or >vitamin A supplement. Most multivitamins contain at least 5,000 IU of vitamin A. Because of side effects, avoid doses of vitamin A larger than 25,000 IU daily unless directed by your doctor.

Sources:
Silverman, H.M., J.A. Romano, G. Elmer. The Vitamin Book. Bantam Books, 1999.
Mayo Clinic Family Health Book. William Morrow & Co., 1996.

This answer prepared 5/25/00.