Best D-Mannose Supplements 2026: Cost per Effective Dose
Top pick for D-Mannose: Nutricost D-Mannose Powder (100 g / 50 Servings) — 2000mg per 1 scoop (2 g)/day, $0.30/day. Our best-value pick.
All D-Mannose Supplements Compared
D-mannose is dosed differently for prevention than for acute use, and most labels do not say so. Products in this catalog run 500 mg to 2,000 mg per serving, so a serving is a unit of packaging rather than a recommended dose. Powder is substantially cheaper per gram than capsules at the higher intakes. ⚠ D-mannose is not a treatment for an established urinary infection — that needs medical assessment.
All 4 products sorted by cost per labelled serving (lowest first). Dose, certification, and pricing verified against NIH DSLD and manufacturer data.
Read the dose column before the price column. Servings in this category are not equivalent — they range from 500 to 2,000 mg per serving. A lower cost per day here can simply mean a smaller serving, so the cheapest row is not automatically the best value.
| Product | Brand | Dose / Serving | Cost / Day | Certification | Pick | Buy |
|---|---|---|---|---|---|---|
| NOW Foods D-Mannose 500 mg (120 Veg Capsules) | NOW Foods | 500mg / 1 capsule | $0.14 | None | Buy | |
| Nutricost D-Mannose Powder (100 g / 50 Servings) | Nutricost | 2000mg / 1 scoop (2 g)/day | $0.30 | None | Best Value | Buy |
| NOW Foods D-Mannose Powder, Non-GMO (6 oz / ~85 Servings) | NOW Foods | 2000mg / 1 scoop (~2 g)/day | $0.33 | None | Buy | |
| Solaray D-Mannose with CranActin (60 VegCaps) | Solaray | 1000mg / 2 capsules/day | $0.96 | None | Buy |
In-Depth D-Mannose Guides
Go deeper on d-mannose — by goal, by form, and what the evidence actually supports:
Our Picks
Best Value: Nutricost D-Mannose Powder (100 g / 50 Servings)
2000mg per 1 scoop (2 g)/day. $0.30/day. 50 servings per container at $14.95.
How We Rank D-Mannose Supplements
Every product is evaluated on three criteria:
- Cost per day. Not cost per pill or cost per bottle — what it actually costs per day at the product's labelled serving. Where a category's servings differ in strength we flag it above the table, because cost per day is only comparable when the doses are.
- Third-party certification. USP Verified, NSF Certified for Sport, and ConsumerLab Approved indicate independent testing for purity, potency, and contaminants.
- Bioavailable form. We prioritize products using the specific chemical form shown to be most effective in published research.
Rankings are not influenced by affiliate commissions. We earn the same commission regardless of which product you choose. Read our full methodology.
Personalize Your D-Mannose Choice
Not sure which d-mannose supplement is right for you? Use our free tools:
- DNA Supplement Analyzer — upload 23andMe or AncestryDNA data to check for genetic variants affecting d-mannose metabolism. Runs entirely in your browser.
- Lab Results Interpreter — enter your blood test values to get personalized dosing recommendations.
- Supplement Stack Builder — build a complete protocol based on your age, sex, medications, and goals.
- Supplement Audit — already taking d-mannose? Check if you have the right form and dose.