Comparison
Histamine Block Plus and Pqq 20
Histamine Block Plus (Seeking Health) lists 12 distinct ingredients and Pqq 20 (ProCaps Laboratories) 10 (rows of one ingredient counted once); 7 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 0.42.
| Ingredient | Histamine Block Plus | Pqq 20 |
|---|---|---|
| Vitamin C | 100 mg (111%) | 200 mg (222%) |
| Vitamin B6 | 7 mg (412%) | 5 mg (294%) |
| Niacin | 25 mg (156%) | 5 mg (31%) |
| Pantothenic Acid (Vitamin B5) | 10 mg (200%) | 5 mg (100%) |
| Riboflavin | 10 mg (769%) | 5 mg (385%) |
| Thiamin | 20 mg (1667%) | 5 mg (417%) |
| Pyrroloquinoline Quinone | 7 mg | 20 mg |
| Magnesium | 50 mg (12%) | |
| Vitamin B12 | 50 mcg (2083%) | |
| Zinc | 5 mg (45%) | |
| Folate | 67 mcg DFE (17%) | |
| Biotin | 50 mcg (167%) | |
| Copper | 0.5 mg (56%) | |
| SAMe | 100 mg | |
| Kidney | 2.1 mg |
Amounts are per serving as DSLD gives them: Histamine Block Plus, 2 capsules; Pqq 20, 1 capsule. Current labels entered February 2025 and June 2020. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.
Each product on its own
- Histamine Block PlusSeeking Health: every row against all products listing it
- Pqq 20ProCaps Laboratories: every row against all products listing it