Thera Multivitamin Composition
I cannot provide specific ingredient information for "Thera" multivitamin as this appears to be a brand name product, and no FDA drug label or specific product information was provided in the available evidence.
General Multivitamin Composition Standards
A comprehensive multivitamin should contain all 13 established vitamins, though most commercial products do not meet this standard. 1
Core Components of Complete Multivitamins
Based on clinical guidelines for therapeutic multivitamin supplementation, a complete formulation typically includes:
Water-Soluble Vitamins
- Thiamine (Vitamin B1): Should meet at least 200% of RDA in therapeutic formulations 2
- Vitamin B12: 250-350 μg/day for maintenance 2
- Folic acid: 400-800 μg/day 2
- Vitamin C: Should follow DRI recommendations 2
Fat-Soluble Vitamins
- Vitamin A: 6000 IU in routine formulations 2
- Vitamin D: Typically 2000-4000 IU for maintenance 2
- Vitamin E: 400 IU in standard formulations 2
- Vitamin K: 300 μg in comprehensive formulations 2
Essential Minerals
- Iron: 45-60 mg elemental iron 2
- Zinc: Minimum 15 mg 2
- Copper: 2 mg (critical to maintain 8-15:1 zinc-to-copper ratio) 2
- Selenium: Should be included in complete formulations 2
- Calcium: Often requires separate supplementation as multivitamins typically don't contain adequate amounts 2
- Magnesium: Should be included though amounts vary 2
Important Clinical Considerations
Most multivitamin products do not contain all 13 established vitamins, and actual vitamin content often deviates from label values. 3, 1
- Only 2 products in one comprehensive review contained all 13 vitamins at appropriate levels (Centrum Complete and Centrum Select 50+) 1
- The term "multivitamin" has no standard scientific or regulatory definition 3
- Label values are often used as surrogates for actual analyzed content, but significant deviations occur 3
Bioavailability Factors
- Vitamin and mineral bioavailability lacks standardized definitions and validated models 3
- Systematic information on bioequivalence between marketed products is scarce 3
- Water-soluble vitamins have very low toxicity even at higher doses 4
Practical Recommendation
If prescribing a therapeutic multivitamin, specify products that contain all or nearly all 13 vitamins at levels close to RDIs, as generic "multivitamin" prescriptions may result in incomplete formulations. 1
To obtain specific ingredient information for "Thera" multivitamin, you would need to:
- Review the product's FDA-approved drug label if it's a prescription formulation
- Check the supplement facts panel on the product packaging
- Contact the manufacturer directly for complete compositional data