What is the generic of Flomax?
The generic of Flomax is Tamsulosin. As of August 2026, the lowest verified cash price for Tamsulosin 0.4 mg is $6.00 at Mark Cuban Cost Plus, based on 7 verified US pharmacy quotes, every price below is a real quote we verified, not an estimate.
| Pharmacy / source | Type | Verified cash price |
|---|---|---|
| Mark Cuban Cost Plus | pharmacy | $6.00 |
| Mark Cuban Cost Plus | pharmacy | $7.50 |
| Honeybee Health | pharmacy | $8.00 |
| Costco Pharmacy | pharmacy | $8.99 |
| HealthWarehouse | pharmacy | $15.90 |
| PlanetDrugsDirect | pharmacy | $43.99 |
Last verified Aug 24, 2026. Cash prices only, from verified public retail and mail-order sources, no insurance copays, no estimates, no extrapolation across strengths or quantities. Prices change; confirm at the pharmacy counter. See our methodology.
Common questions
- What is the generic of Flomax?
- The generic of Flomax is Tamsulosin. It contains the same active ingredient and is the version that drives the low cash prices below.
- How much does generic Flomax (Tamsulosin) cost without insurance?
- The lowest verified cash price we currently have for Tamsulosin 0.4 mg is $6.00 at Mark Cuban Cost Plus, from 7 verified US pharmacy quotes. Prices change; confirm at the pharmacy before you buy.
- Is generic Tamsulosin as effective as Flomax?
- Generic Tamsulosin must meet the same FDA standards for active ingredient, strength, and quality as Flomax. Ask your pharmacist if you have questions about switching.