Comparison
Optimal Multivitamin w/Iron and MultiThera 2
Optimal Multivitamin w/Iron (Seeking Health) lists 30 distinct ingredients and MultiThera 2 (Klaire Labs) 33 (rows of one ingredient counted once); 30 are on both labels. On the site's similarity measure, which compares ingredient lists (1 for the same list, rarer ingredients counting for more; amounts are not part of it), the two formulas score 0.88.
| Ingredient | Optimal Multivitamin w/Iron | MultiThera 2 |
|---|---|---|
| Vitamin C | 180 mg (200%) | 1,200 mg (1333%) |
| Calcium | 100 mg (8%) | 253 mg (19%) |
| Vitamin B6 | 6 mg (353%) | 50 mg (2941%) |
| Vitamin D | 25 mcg (125%) | 25 mcg (125%) |
| Magnesium | 100 mg (24%) | 200 mg (48%) |
| Vitamin B12 | 250 mcg (10417%) | 200 mcg (8333%) |
| Zinc | 15 mg (136%) | 15 mg (136%) |
| Niacin | 40 mg (250%) | 200 mg (1250%) |
| Vitamin E | 60.8 mg (405%) | 229 mg (1527%) |
| Folate | 1,360 mcg DFE (340%) | 1,360 mcg DFE (340%) |
| Vitamin A | 2,100 mcg RAE (233%) | 5,250 mcg RAE (583%) |
| Pantothenic Acid (Vitamin B5) | 20 mg (400%) | 400 mg (8000%) |
| Riboflavin | 5.1 mg (392%) | 50 mg (3846%) |
| Thiamin | 12 mg (1000%) | 100 mg (8333%) |
| Biotin | 600 mcg (2000%) | 300 mcg (1000%) |
| Iron | 45 mg (250%) | 20 mg (111%) |
| Chromium | 120 mcg (343%) | 200 mcg (571%) |
| Selenium | 70 mcg (127%) | 200 mcg (364%) |
| Manganese | 2 mg (87%) | 2 mg (87%) |
| Copper | 2 mg (222%) | 2 mg (222%) |
| Iodine | 150 mcg (100%) | 150 mcg (100%) |
| Choline | 10 mg (2%) | 150 mg (27%) |
| Vitamin K | 80 mcg (67%) | 60 mcg (50%) |
| Molybdenum | 75 mcg (167%) | 150 mcg (333%) |
| Inositol | 25 mg | 50 mg |
| Boron | 2 mg | 2 mg |
| Vanadium | 50 mcg | 100 mcg |
| Carotenoids | 0.02 mg | 0.1 mg |
| Dunaliella salina | not disclosed | not disclosed |
| Carotene (unspecified) | 1,050 mcg RAE | 4,500 mcg RAE |
| Flavonoid | 100 mg | |
| PABA | 50 mg | |
| Hesperidin | 15 mg |
Amounts are per serving as DSLD gives them: Optimal Multivitamin w/Iron, 4 capsules; MultiThera 2, 6 tablets. Current labels entered January 2020 and March 2025. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.
Each product on its own
- Optimal Multivitamin w/IronSeeking Health: every row against all products listing it
- MultiThera 2Klaire Labs: every row against all products listing it