This list includes 7 Vitamins that start with M, from “Menadione” to “Myo‑inositol”. They include both supplement forms and naturally occurring compounds found in foods. These vitamins commonly support metabolism, nerve function, and reproductive health.
Vitamins that start with M are a small group of recognized vitamins and vitamin-like compounds linked to essential body processes. Historically, myo-inositol was treated as a vitamin-like nutrient and remains notable in fertility research.
Below you’ll find the table with the columns ‘Vitamin’, ‘Benefits’, ‘Primary food sources’, and ‘RDI’.
Vitamin: The nutrient name shown so you can quickly find and recognize each entry in the list.
Benefits: A concise 1–2 sentence summary of what the vitamin does and why it matters for your health.
Primary food sources: Lists common foods you can eat to increase your intake of the vitamin and practical serving tips.
RDI: The recommended daily intake, including age or gender caveats and the authoritative source for context and planning.
Vitamins that start with M
| Name | Other names | Primary benefits | RDI (typical adult) |
|---|---|---|---|
| Methylcobalamin | methyl B12; MeCbl; active B12 form | Supports red blood cell production, nervous system health, and DNA synthesis. Used to treat B12 deficiency and some neuropathies. | 2.4 µg (adult) [NIH] |
| Methylfolate | L‑methylfolate; 5‑MTHF; 5‑methyltetrahydrofolate | Provides bioactive folate for DNA synthesis, fetal development, and homocysteine regulation. Used when folic acid metabolism is impaired. | 400 µg DFE (adult, nonpregnant) [NIH] |
| Menaquinone | vitamin K2 (general); MK | Supports blood clotting and activates bone and vascular proteins important for bone and heart health. | Men 120 µg; Women 90 µg (vitamin K AI; typical adult) [NIH] |
| Menaquinone‑7 (MK‑7) | MK‑7; vitamin K2 (MK‑7) | A long‑acting form of K2 that helps activate clotting and bone proteins; commonly used in supplements for bone and cardiovascular support. | Men 120 µg; Women 90 µg (vitamin K AI; typical adult) [NIH] |
| Menatetrenone (MK‑4) | MK‑4; menaquinone‑4; menatetrenone | Short‑chain K2 form involved in bone metabolism and vascular protein activation; used clinically for bone health in some countries. | Men 120 µg; Women 90 µg (vitamin K AI; typical adult) [NIH] |
| Menadione | vitamin K3; synthetic K | Historically used as a pro‑vitamin converted to active K in some species; not recommended for human supplementation due to safety concerns. | Men 120 µg; Women 90 µg (vitamin K AI; typical adult); menadione not recommended as a supplement [NIH] |
| Myo‑inositol | inositol; myo‑inositol (vitamin‑like compound) | Plays roles in cell signaling, insulin sensitivity, and reproductive health; studied for polycystic ovary syndrome and mood support. | No established RDI (no official dietary reference intake) [EFSA] |