SildenafilPrices, Coupons & Savings

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*Based on the difference between the U&C price submitted and the price the patient paid, as of April 2023.

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  2. Sildenafil Citrate
    Generic for Revatio
    30 tablets $5.4 USD
    Save $178.20
  3. Sildenafil Citrate
    Generic for Revatio
    30 tablets $4.8 USD
    Save $178.80
  4. Sildenafil Citrate
    Generic for Revatio
    30 tablets $5.4 USD
    Save $178.20
  5. Sildenafil Citrate
    Generic for Revatio
    30 tablets $5.4 USD
    Save $178.20
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Save up to 90% of your branded or generic medications using the Now Patient Rx Advantage Card

Do you need a prescription for sildenafil?

Yes, sildenafil is only available with a valid physician Rx.

How much is sildenafil without Insurance in the US?

Our website gives two competitive savings options to US customers who wish to purchase sildenafil, as either a brand or generic, if available. The first is access to medications through our mail-order online pharmacy. The second is by using the Now Patient Rx Advantage Card, which can be used in over 65,000 pharmacies nationwide, across America. If you are insured, then in most cases, the cash price will be significantly cheaper than the copay.

What will my out-of-pocket cost be for sildenafil in the US?

There are no out-of-pocket (OOP) costs because we are currently only offering a cash-based option to purchase medications.

Is Now Patient a sildenafil savings card?

Yes. Save up to 90% on your sildenafil with the FREE Now Patient Rx Advantage card*.
*Based on the difference between the U&C submitted by the pharmacy and the price the patients pay.

Can you handle Rx transfers for home delivery in the US?

Yes. If you use the mail-order online pharmacy option, then we can handle requests by you to have your prescription transferred to our pharmacy for home delivery. We can even help you manage your refills by giving you timely reminders, so you do not run out of your medication.

Is Now Patient a sildenafil coupon provider in the US?

No. Now Patient does not provide sildenafil coupons or FREE sildenafil samples.

Do you accept commercial, Medicare or Medicaid coverage for sildenafil in the US?

No. Currently, we only offer cash-based options for purchase, therefore we do not require your insurance benefit details. In the future, our plan is to be able to handle commercial insurance, Medicare and Medicaid including cases where you have multiple health plans that provide benefit coverage (e.g. Medicaid and Commercial). We also anticipate being able to handle more complex scenarios such as using primary insurance combined with a manufacturer copay assistance program.

Does Now Patient work with Medicare?

Our cash-based prices for medications are typically cheaper than Medicare copays. We do not bill Medicare Part D (standalone drug coverage) or Medicare Advantage (combined health and drug coverage). When you purchase your medication from Now Patient, you will be doing so out of your pocket. The spend will not count towards your plan deductibles or gaps.

Does Now Patient work with Commercial Insurance?

Our cash-based prices for medications are typically cheaper than commercial plan copays. We do not bill your commercial plan. When you purchase your medication from Now Patient, you will be doing so out of your pocket. The spend will not count towards your plan deductibles or gaps.

What should you do if you use too much sildenafil?


Call your doctor right away or seek immediate medical attention if your symptoms do not improve or they become worse after using sildenafil. You can also call 800-222-1222 to reach the American Association of Poison Control Centers or use its online resource if you think you’ve used too much sildenafil. But if you have severe symptoms, call 911 (or your local emergency number) immediately or go to the nearest emergency room.


If you think it is an emergency, call 999 or find your nearest A&E
If you need help now, but it’s not an emergency go to 111.nhs.uk or call 111. Alternatively you can speak to one of our pharmacists or use the Now Patient app to make an appointment with your GP.

What should I do if I miss my dose?

There are occasions when people forget to take their medication at correct prescribed times. This may not only have an effect on potentially making the medication less effective but it may also inadvertently lead to taking doses too close together, thereby increasing the risks of side effects.

Click here to find out what to do if you forgot to take your medication

What is generic sildenafil?

US brand name of sildenafil and manufacturer

Sildenafil is available in the US under the brand name Viagra and Revatio. Both are manufactured by Pfizer Inc.

UK brand name of sildenafil and manufacturer

Sildenafil is available in the UK under the brand names Viagra and Revatio. Viagra 25mg, 50mg and 100mg is manufactured by Pfizer Limited. Revatio 20mg is also manufactured by Pfizer Limited.

Is sildenafil available in the UK on the NHS?

Sildenafil is available on the NHS in the UK. It can be prescribed by healthcare providers for eligible patients.

Prescription requirement for sildenafil

Sildenafil is a prescription medication and requires a prescription from a healthcare provider.

FDA approval of sildenafil

Sildenafil has received FDA (Food and Drug Administration) approval for the treatment of erectile dysfunction.

Active ingredient of sildenafil and mechanism of action

The active ingredient in sildenafil is sildenafil citrate. It belongs to a class of medications called phosphodiesterase type 5 (PDE5) inhibitors. Sildenafil works by inhibiting the enzyme PDE5, which regulates blood flow in the penis. By inhibiting PDE5, sildenafil promotes the relaxation of blood vessels and increases blood flow, leading to improved erectile function.

Uses of sildenafil

Sildenafil is primarily used for the treatment of erectile dysfunction (ED), a condition characterized by the inability to achieve or maintain an erection sufficient for sexual activity. It is also used off-label for other conditions, such as pulmonary arterial hypertension.

Forms of sildenafil

Sildenafil is available in the form of oral tablets. The specific strength and formulation will depend on the prescribed dosage and the brand.

Dosage of sildenafil

The dosage of sildenafil will vary depending on the individual’s needs and response to the medication. It is important to follow the dosage instructions provided by your healthcare provider.

Precautions and warnings for sildenafil

  • Sildenafil should not be taken by individuals who are taking nitrates (such as isosorbide dinitrate, isosorbide mononitrate, or nitroglycerin) as the combination may lead to a severe drop in blood pressure
  • Tell your doctor if you have heart problems (such as heart disease, heart attack or life-threatening irregular heartbeat, angina or chest pain, or heart failure), kidney or liver disease, high blood pressure or low blood pressure, Peyronie’s disease, painful or prolonged erections (priapism), sickle cell anemia, leukemia, multiple myeloma, or eye problems (such as retinitis pigmentosa, or  NAION (non-arteritic anterior ischemic optic neuropathy))
  • Sildenafil may interact with certain medications, including other medications used to treat erectile dysfunction
  • It is important to seek immediate medical attention if an erection lasts longer than four hours or if you experience sudden vision loss
  • Sildenafil does not protect against sexually transmitted diseases
  • Sildenafil passes into breast milk. Speak to your doctor before breast-feeding

Side effects of sildenafil

Common side effects of sildenafil may include:

  • Headache
  • Sudden hearing loss
  • Blurred vision
  • Flushing
  • Upset stomach
  • Nasal congestion
  • Back pain

Get medical help right away if you have any serious side effects such as an allergic reaction. Symptoms include hives, trouble breathing, shortness of breath, chest pain, swelling of the face, tongue or throat, skin rash, and severe skin reactions. Promptly report any adverse effects to a healthcare professional for medical advice.

Interactions with other drugs

Sildenafil may interact with certain medications, including nitrates, alpha-blockers, medications that increase the risk of bleeding, azole antifungals (such as itraconazole or ketoconazole), macrolide antibiotics (such as clarithromycin and erythromycin), HIV protease inhibitors (such as saquinavir), and ritonavir. It is important to inform your healthcare provider about all the prescription drugs, over the counter nonprescription medication, supplements, and vitamins you are taking to avoid potential adverse effects and drug interactions.

Similar drugs to sildenafil

Other medications for the treatment of erectile dysfunction include tadalafil (Cialis), and vardenafil (Levitra).


Stefano Mirabello Medical Reviewer
Pharmacist / B.Pharm
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