Collection: Vitamin D Supplements

Compare FERN-D vitamin D supplements in one place, including vitamin D3 1000 IU softgels in 60-count and 120-count bottles, plus FERN-D 3X calcifediol capsules.

FERN-D 3X contains calcifediol, a different form of vitamin D from the cholecalciferol in FERN-D softgels. Different forms and strengths should not be treated as interchangeable. Review each product label and ask your healthcare professional which option fits your needs.