Sildenafil: here's the fair price
This is what US pharmacies pay, on average, for sildenafil. Use it to spot a fair cash price, and feel good about asking for one.
Sildenafil 20 Mg Tablet
A fair cash price is usually this cost plus a dispensing fee. If your quote is many times higher, ask about a generic, another pharmacy, or a cash discount.
Ask for generic Sildenafil 20 Mg Tablet. Pharmacies pay about $1.57 for 30. Ask your pharmacy for its cash price and compare it with your copay. A fair cash price is close to this cost plus a dispensing fee.
Source: CMS NADAC as of 2026-11-04. Ask your prescriber or pharmacist whether a generic is right for you.
Source: CMS NADAC weekly file as of 2026-11-04. Median across NDCs with the same description. Public domain.
Your ZIP and location stay in your browser. We never store them.
Every strength and form
| Product | Pharmacy cost | 30 count | Effective |
|---|---|---|---|
| SILDENAFIL 20 MG TABLETGeneric | $0.05 per tablet or capsule | $1.57 | 10/21/2026 |
| SILDENAFIL 50 MG TABLETGeneric | $0.11 per tablet or capsule | $3.33 | 10/21/2026 |
| SILDENAFIL 25 MG TABLETGeneric | $0.12 per tablet or capsule | $3.66 | 10/21/2026 |
| SILDENAFIL 100 MG TABLETGeneric | $0.14 per tablet or capsule | $4.10 | 10/21/2026 |
| SILDENAFIL 10 MG/ML ORAL SUSPGeneric | $0.23 per mL | n/a | 10/21/2026 |
Source: CMS NADAC, as of 2026-11-04. National average acquisition cost, not a retail quote.
Label basics
What it is used for (FDA label)
1 INDICATIONS AND USAGE Sildenafil citrate is indicated for the treatment of erectile dysfunction. Sildenafil citrate is a phosphodiesterase-5 (PDE5) inhibitor indicated for the treatment of erectile dysfunction (ED) ( 1 )
Common side effects (FDA label)
6 ADVERSE REACTIONS The following are discussed in more detail in other sections of the labeling: Cardiovascular [ see Warnings and Precautions ( 5.1 ) ] Prolonged Erection and Priapism [ see Warnings and Precautions ( 5.2 ) ] Effects on the Eye [ see Warnings and Precautions ( 5.3 ) ] Hearing Loss [ see Warnings and Precautions ( 5.4 ) ] Hypotension when Co-administered with Alpha-blockers or Anti-hypertensives [ see Warnings and Precautions ( 5.5 ) ] Adverse Reactions with the Concomitant Use of Ritonavir [ see Warnings and Precautions ( 5.6 ) ] Combination with other PDE5 Inhibitors or...
Drug interactions (from the label)
7 DRUG INTERACTIONS Sildenafil citrate can potentiate the hypotensive effects of nitrates, alpha blockers, and anti-hypertensives ( 4.1 , 5.5 , 7.1 , 7.2 , 7.3 , 12.2 ) With concomitant use of alpha blockers, initiate sildenafil citrate at 25 mg dose ( 2.3 ) CYP3A4 inhibitors (e.g., ritonavir, ketoconazole, itraconazole, erythromycin): Increase sildenafil citrate exposure ( 2.4 , 7.4 , 12.3 ) Ritonavir: Do not exceed a maximum single dose of 25 mg in a 48 hour period ( 2.4 , 5.6 ) Erythromycin or strong CYP3A4 inhibitors (e.g., ketoconazole, itraconazole, saquinavir): Consider a starting dose of 25 mg ( 2.4 , 7.4 ) 7.1 Nitrates Administration of sildenafil tablets with nitric oxide donors...
Warnings (from the label)
5 WARNINGS AND PRECAUTIONS Patients should not use sildenafil tablets if sexual activity is inadvisable due to cardiovascular status ( 5.1 ) Patients should seek emergency treatment if an erection lasts >4 hours. Use sildenafil tablets with caution in patients predisposed to priapism ( 5.2 ) Patients should stop sildenafil tablets and seek medical care if a sudden loss of vision occurs in one or both eyes, which could be a sign of non arteritic anterior ischemic optic neuropathy (NAION). Sildenafil tablets should be used with caution, and only when the anticipated benefits outweigh the risks, in patients with a history of NAION. Patients with a “crowded” optic disc may also be at an...
Source: FDA drug label via openFDA, label effective 2023-05-10. Full label on DailyMed. Excerpts are verbatim and truncated. Read the full label and ask your pharmacist.