L-methylfolate + methylcobalamin

L-methylfolate + methylcobalamin is a combination of two active forms of B vitamins that work together to address nutritional deficiencies and support various bodily functions. This combination is commonly used in medical foods and supplements, particularly for patients with certain medical conditions. ## Composition and Forms L-methylfolate (also called 5-methyltetrahydrofolate or 5-MTHF) is the active form of folate (vitamin B9) that is readily available for use by the body. Methylcobalamin is an active form of vitamin B12. Together, these bioavailable forms bypass the need for conversion in the body, making them particularly useful for individuals with genetic variations affecting metabolism of these vitamins[1][5]. In many commercial products, this combination also includes pyridoxal 5-phosphate (the active form of vitamin B6), creating a three-vitamin formulation[2][3][5]. ## Medical Uses The L-methylfolate + methylcobalamin combination is primarily used for: 1. **Nutritional Deficiencies**: Replenishing vitamin B deficiencies and supporting proper cellular function[5]. 2. **Diabetic Peripheral Neuropathy**: Studies suggest this combination (especially when including pyridoxal 5-phosphate) may help increase epidermal nerve fiber density in patients with diabetic neuropathy, potentially reversing nerve damage[2][3]. 3. **Adjunctive Treatment for Depression**: L-methylfolate has been studied as an adjunctive treatment for patients with major depressive disorder who have inadequately responded to SSRIs[4]. ## Mechanism of Action This combination works through several mechanisms: - **L-methylfolate**: Functions as a coenzyme crucial for many cellular processes including amino acid metabolism, DNA and RNA synthesis, and red blood cell formation[3]. - **Methylcobalamin**: Essential for nervous system function, red blood cell formation, and DNA synthesis[3]. When combined, these vitamins support metabolic pathways that may be compromised in certain conditions, particularly those affecting nerve health and function[2][3]. ## Safety and Side Effects The combination appears to be generally well-tolerated. According to available information, no common side effects are typically reported[5]. However, as with any supplement, individual reactions may vary, and patients should consult healthcare providers before use, especially when taking other medications[1][6]. ## Availability The combination is available by prescription as a medical food in various brand names including Metanx, Metaspan, Cherifol, Foltec Plus, Macfolate, L-Fold, Folbliz, Zarifol, Kalzimin, Smartfol, and Elfolin Plus[5].

Brand names

MetanxMetaspanCherifolFoltec PlusMacfolateL-FoldFolblizZarifolKalziminSmartfolElfolin Plus

Other names

5-methyltetrahydrofolate + methylcobalamin5-MTHF + methylcobalamin