M.V.I.-12 ADULT
Clinical safety rating: caution
Comprehensive clinical and safety monograph for M.V.I.-12 ADULT (M.V.I.-12 ADULT).
M.V.I.-12 Adult is a multivitamin combination that supplies essential vitamins (A, D, E, C, B1, B2, B3, B5, B6, B12, folic acid, biotin) to maintain normal metabolic functions, act as cofactors in enzymatic reactions, and support cellular respiration, antioxidant defense, and erythropoiesis.
| Metabolism | Vitamins are metabolized via various pathways: water-soluble vitamins (B-complex, C) are minimally metabolized and excreted renally; fat-soluble vitamins (A, D, E) are stored in tissues and hepatically metabolized; folic acid is reduced to tetrahydrofolate by dihydrofolate reductase. |
| Excretion | Renal: water-soluble vitamins (B-complex, C) excreted in urine; fat-soluble vitamins (A, D, E, K) undergo biliary/fecal excretion. Specific percentages vary per component; e.g., vitamin C ~50% renal, thiamine ~30-70% renal as metabolites. |
| Half-life | Variable by component: e.g., thiamine 9-18 days (tissue stores), vitamin C 10-20 days (depletion), vitamin A 50-100 days (liver stores). Clinical context: half-lives reflect slow depletion; daily dosing maintains plasma levels. |
| Protein binding | Vitamin A: 100% (retinol-binding protein, albumin). Vitamin D: 85-90% (vitamin D-binding protein). Vitamin E: ~90% (lipoproteins). Vitamin K: ~99% (lipoproteins). B-complex: low binding (<5-30%). Vitamin C: 24% (albumin). |
| Volume of Distribution | Variable: water-soluble vitamins confined to extracellular fluid (0.2-0.3 L/kg); fat-soluble vitamins larger due to adipose storage (e.g., vitamin D ~1.5 L/kg). Overall mean ~0.5 L/kg reflecting mixed distribution. |
| Bioavailability | Intravenous: 100%. Oral: not applicable; formulation is for IV use only. If extrapolated from oral vitamin absorption: variable (e.g., thiamine 5-10%, vitamin C 70-90%). |
| Onset of Action | Intravenous: immediate (within minutes) for water-soluble vitamins; hours to days for fat-soluble vitamins to reach therapeutic levels. |
| Duration of Action | Water-soluble vitamins: hours to days (excess excreted); fat-soluble vitamins: days to months (stored). Clinical note: continuous IV infusion maintains levels; missing doses may not cause immediate deficiency. |
10 mL (one vial) added to 500 mL of IV fluid, infused over 8-24 hours once daily.
| Dosage form | INJECTABLE |
| Renal impairment | No dose adjustment required for renal impairment. |
| Liver impairment | No specific adjustment; use caution in severe hepatic impairment. |
| Pediatric use | Children 11 years and older: same as adult. Children under 11: 5 mL (one-half vial) daily. |
| Geriatric use | No specific adjustment; monitor for toxicity in elderly due to potential multivitamin accumulation. |
| 1st trimester | Consult provider |
| 2nd trimester | Consult provider |
| 3rd trimester | Consult provider |
Clinical note
Comprehensive clinical and safety monograph for M.V.I.-12 ADULT (M.V.I.-12 ADULT).
| Breastfeeding | The vitamins in M.V.I.-12 ADULT are normally present in breast milk and are considered compatible with breastfeeding at recommended doses. No specific M/P ratios are available for the combination product; individual vitamins have variable transfer. Caution with vitamin A doses exceeding 10,000 IU/day. |
| Teratogenic Risk | M.V.I.-12 ADULT is a multivitamin preparation. At recommended doses, no increased risk of congenital anomalies has been reported. However, high doses of vitamin A (retinol) can be teratogenic; this product contains retinol 3300 IU, which is below the teratogenic threshold (<10,000 IU/day). Use during pregnancy is generally considered safe when following recommended intakes. |
■ FDA Black Box Warning
None
| Serious Effects |
["Known hypersensitivity to any component","Pre-existing hypervitaminosis A or D","Severe folate deficiency with untreated pernicious anemia (due to B12 content)","Wilson's disease (due to copper content in some formulations)"]
| Precautions | ["Allergic reactions including anaphylaxis may occur, especially in patients with hypersensitivity to any component","Do not exceed recommended dosage; vitamin A and D toxicity with prolonged high doses","Use with caution in patients with renal impairment or hypervitaminosis","May cause phlebitis or thrombophlebitis if infused rapidly"] |
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| Fetal Monitoring | No specific monitoring required beyond routine prenatal care. Monitor for signs of vitamin toxicity if exceeding recommended doses, particularly vitamin A (retinol) toxicity: pseudotumor cerebri, liver toxicity, and fetal retinoid syndrome at high doses. |
| Fertility Effects | No adverse effects on fertility are expected at recommended doses. Adequate multivitamin intake may support normal reproductive function. |