Vitamin D
A fat-soluble vitamin the body needs for normal growth, bone health, and calcium absorption.
What it is
Vitamin D is a nutrient the body needs for normal growth and development. It helps the body absorb calcium and supports nerve function, muscle movement, and immune function. The two forms found in supplements are D2 (ergocalciferol) and D3 (cholecalciferol); both raise vitamin D levels in the blood, though D3 might raise it higher and for longer than D2.
Food and timing considerations
Vitamin D is fat-soluble, so it's absorbed better when taken with a meal or snack that includes some fat.
Known interaction categories
- Informational
- Insufficient evidence
Published interaction pages on this site
Informational (1)
Insufficient evidence (34)
- Vitamin D and AmlodipineInsufficient evidence
- Vitamin D and AshwagandhaInsufficient evidence
- Vitamin D and AspirinInsufficient evidence
- Vitamin D and AtorvastatinInsufficient evidence
- Vitamin D and CaffeineInsufficient evidence
- Vitamin D and CiprofloxacinInsufficient evidence
- Vitamin D and CopperInsufficient evidence
- Vitamin D and CoQ10 (Coenzyme Q10)Insufficient evidence
- Vitamin D and CreatineInsufficient evidence
- Vitamin D and DoxycyclineInsufficient evidence
- Vitamin D and EscitalopramInsufficient evidence
- Vitamin D and Folate / Folic AcidInsufficient evidence
- Vitamin D and IbuprofenInsufficient evidence
- Vitamin D and IronInsufficient evidence
- Vitamin D and LevothyroxineInsufficient evidence
- Vitamin D and LisinoprilInsufficient evidence
- Vitamin D and LosartanInsufficient evidence
- Vitamin D and MagnesiumInsufficient evidence
- Vitamin D and MelatoninInsufficient evidence
- Vitamin D and MetforminInsufficient evidence
- Vitamin D and Omega-3 / Fish OilInsufficient evidence
- Vitamin D and OmeprazoleInsufficient evidence
- Vitamin D and PotassiumInsufficient evidence
- Vitamin D and ProbioticsInsufficient evidence
- Vitamin D and SertralineInsufficient evidence
- Vitamin D and SpironolactoneInsufficient evidence
- Vitamin D and St. John's WortInsufficient evidence
- Vitamin D and TurmericInsufficient evidence
- Vitamin D and Vitamin B12Insufficient evidence
- Vitamin D and Vitamin CInsufficient evidence
- Vitamin D and Vitamin EInsufficient evidence
- Vitamin D and Vitamin KInsufficient evidence
- Vitamin D and WarfarinInsufficient evidence
- Vitamin D and ZincInsufficient evidence
Sources
Last reviewed 2026-08-22
Medical information disclaimer: this information is general and educational. It does not diagnose conditions, prescribe treatment, or determine whether a combination is safe for you personally. Follow your prescription label and ask a pharmacist or clinician before starting, stopping, or combining products. Full disclaimer.