Compare the three d-mannose formats head-to-head — the trial-dose powder, the capsule convenience format, and the cranberry-combination product. In d-mannose's comparison, the honest principle is: the dose should match the trial (2 g), and the format is a convenience decision.



| Metric | 🏆NOW D-Mannose Powder NOW Foods | D-Mannose Capsules (500 mg) Various | D-Mannose + Cranberry PAC Blend Various |
|---|---|---|---|
| Delivery Form | Powder | Capsule | Capsule |
| Strength | 2 g per serving | 500 mg per capsule | 1 g D-mannose + 36 mg PACs per serving |
| Servings / Container | 68 | 120 | 60 |
| Retail Price | $16.99 | $14.99 | $22.99 |
| Cost / Serving | $0.25 | $0.12BEST 💰 | $0.38 |
| Overall Score | 81/100 | 79/100 | 74/100 |
| 3rd-Party Testing | None | None | None |
| Vegan Friendly | ✓ Yes | ✓ Yes | ✓ Yes |
The recurrent-UTI prevention trial used 2 g daily — the dose the powder's scoop delivers in one serving. The capsule math matters: 500 mg × 4 capsules = the same dose, but many users take 2 and don't realize they're at half the studied quantity.
D-mannose prevents adhesion; it does not kill bacteria. The symptomatic UTI needs medical evaluation and, when indicated, the antibiotic. The kidney infection needs the emergency department. The supplement works between the infections.
The physical grip-competition: free mannose occupies the E. coli binding sites. No kill, no resistance, no microbiome disruption — the mechanism's elegance and its boundary in one.
Cranberry PACs (the UTI page's #1 product) target P-fimbriae while D-mannose targets type-1 fimbriae — the two covering different adhesion systems. The pair is the dual-agent strategy.
Unlike antibiotics, d-mannose doesn't touch the microbiome — the E. coli gut reservoir (the UTI page's teaching) remains intact, and the resistance pressure is zero.
The post-coital dosing pattern for the women whose flares follow a predictable event — the UTI page's strategy and the molecule's most efficient use.