Swanson · Agmatine · Capsules
Is Swanson Agmatine Sulfate 650 mg underdosed?
1 serving = 1 capsuleDirections: 1–2 servings a dayLabel as of 25 Feb 2019 · NIH DSLD
Verdict
650 mg–1.3 g a dayas the label directs
Not gradedContains 1.3 g. Not graded: no human study has tested it for exercise; human studies are for nerve pain.
One capsule gives 650 mg.
What the label says
- Agmatine Sulfate per serving
- 650 mg in 1 capsule
- Servings a day
- 1–2 servings a day
- Agmatine Sulfate a day, as directed
- 650 mg–1.3 g
- Research dose
- Not graded Evidence: Not graded
Suggested use: As a dietary supplement, take one veggie capsule one to two times per day with water.
More about agmatine sulfate: forms, timing and the studies behind the dose.
Same category, compared
All 7 agmatine supplements we checked, ranked by dose (commission never changes the order).
| Product | Per serving | Form |
|---|---|---|
| BulkSupplements Agmatine Sulfate Capsules | 1 g | Capsules |
| BulkSupplements Agmatine Sulfate Powder | 1 g | Powders |
| Nootropics Depot Agmatine Sulfate 250 mg | 250 mg | Capsules |
| NutraBio Agmatine 500 mg | 500 mg | Capsules |
| Nutricost Agmatine 1000 mg | 1 g | Capsules |
| Nutricost Agmatine Powder | 1 g | Powders |
| Swanson Agmatine Sulfate 650 mg (this product) | 650 mg | Capsules |
Where the reference doses come from
- Agmatine Sulfate, : .
- Label data: National Institutes of Health, Office of Dietary Supplements. Dietary Supplement Label Database, 2026. https://dsld.od.nih.gov/. Label 193318, including its servings a day.
For a supplement taken every day we judge the most the label's directions give in a day, and show the least. Read the full methodology or the corrections log.