Viagra Prescription Online
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Viagra - Overview
Viagra is an oral medication that has been used to treat erectile dysfunction. Through Push Health, one can request a Viagra online prescription and get Viagra medication, including generic Viagra 100 mg tablets, when appropriate to do so.
How Does Viagra Work?
What is Viagra? Viagra prescription medication contains the active ingredient sildenafil and is used in the treatment of erectile dysfunction. Similar to avanafil (Stendra), tadalafil (Cialis) and vardenafil (Levitra), Viagra belongs to a class of medications known as a phosphodiesterase type 5 (PDE5) inhibitors. Through its mechanism of action, the active ingredients in Viagra help relax smooth muscle in the penis and, as a result, increases the flow of blood to the penis and increasing the likelihood of getting an erection. Viagra medication does so by enhancing the effects of nitric oxide (NO). Viagra medication does not work when no sexual stimulation is present. In other words, even though Viagra prescription medication may help symptoms resulting from a psychogenic etiology, a man cannot get an erection if he is not sexually excited at the time a Viagra tablet is used.
Viagra - Dosage & Metabolism
Viagra prescription medication is available in different doses, including Viagra 25mg, Viagra 50mg and Viagra 100mg, and the right dose depends on the person and the instructions of their doctor or medical provider. Viagra tablets are in the shape of blue, film-coated, rounded-diamond-shaped tablets which is how Viagra earned the popular "the little blue pill" name. Of note, the absorption of Viagra after a high fat meal is reduced. Viagra was only found in the semen of people who took it orally in small quantities. Elderly patients take longer to metabolize Viagra and renal insufficiency did not dramatically affect the clearance of Viagra from the body. Viagra medication also demonstrated improved erections in people with spinal cord injuries and radical prostatectomy patients.
How Long Does Viagra Last?
After being taken orally, Viagra medication is rapidly absorbed and maximum observed plasma concentrations are reached within 120 minutes with a median time of 60 minutes when taken while fasting. Given these dynamics, it is generally recommended that Viagra prescription medication be taken 1 hour before anticipated sexual activity but the exact directions may vary from person to person and be customized based on the judgement of the prescribing medical provider. Viagra medication lasts approximately 4-6 hours, limiting the time window in which it works but also limiting the side effects of the the medication when used.
Viagra - Frequently Asked Questions
Is Viagra the same as sildenafil?
Yes. Viagra is the brand name for sildenafil. Both contain the same active ingredient at the same doses and are bioequivalent. Generic sildenafil became available in 2017 and is now the most commonly dispensed form at pharmacies - significantly more affordable than branded Viagra. A Viagra prescription may be filled with generic sildenafil at most pharmacies.
How long does Viagra last?
Viagra's effects typically last approximately 4 to 6 hours after taking a dose. Onset of action is usually within 30 to 60 minutes, though a high-fat meal can delay this. Viagra should not be taken more than once in a 24-hour period. For a longer duration option - up to 36 hours - tadalafil (Cialis) may be a better fit.
What is the difference between Viagra and Cialis?
Viagra (sildenafil) lasts 4 to 6 hours and should ideally be taken on an empty stomach for optimal absorption. Cialis (tadalafil) lasts up to 36 hours and is not affected by food, making it more flexible for spontaneous use. Tadalafil also has a once-daily low-dose option and an FDA-approved indication for BPH that sildenafil does not. Both are effective for ED and are available as affordable generics. For a full comparison, see the erectile dysfunction service page.
Can I take Viagra if I use blood pressure medication?
It depends on the medication. Viagra and all PDE5 inhibitors lower blood pressure and can have additive effects when combined with antihypertensive medications. Certain blood pressure medications - particularly alpha-blockers like tamsulosin - can cause significant additional blood pressure lowering in combination with sildenafil. Most men on other types of blood pressure medication can use Viagra safely with provider guidance. Viagra is absolutely contraindicated with nitrate medications - including nitroglycerin and isosorbide - due to the risk of severe, life-threatening hypotension.
Is generic sildenafil as effective as Viagra?
Yes. Generic sildenafil is bioequivalent to Viagra - it contains the same active ingredient at the same dose and has the same clinical effect. The FDA requires bioequivalence before generic approval. Generic sildenafil is dispensed at most pharmacies in place of branded Viagra and is typically under $2 per tablet.
Can I get a Viagra prescription online?
Yes. Through Push Health, men who need a Viagra (sildenafil) prescription can connect with a licensed medical provider who can evaluate their situation and prescribe sildenafil medication when appropriate - without an office visit. Prescriptions are sent electronically to a pharmacy of the patient's choice.
Can I Buy Viagra Online?
Viagra is a prescription medication and, as a result, Viagra OTC (over-the-counter) is not available. For this reason, getting quality, generic Viagra without a doctor prescription is not really possible as one cannot readily just buy Viagra online. Instead, the first step is getting a prescription from a medical provider and Push Health can connect people who need a Viagra prescription with licensed medical providers who can prescribe generic Viagra tablets, including generic Viagra 25 mg, Viagra 50 mg and Viagra 100 mg medication, when appropriate to do so. Of note, people looking for cheap Viagra will be interested in the fact that Viagra coupons are available online at times or from the manufacturer. Viagra prescription discount cards may also be available. Generally, Viagra costs approximately $2 per pill at most pharmacies in the United States when paying out of pocket for the medication.
Viagra - Side Effects
Viagra prescription medication, like similar medications, can cause side effects although it is generally well tolerated. Side effects from Viagra medication use include dizziness, rash, visual changes such as impairment of color discrimination, headaches and congestion. Decreases in sitting blood pressure were most notable 1-2 hours after Viagra medication administration and was not different when compared to placebo at 8 hours. Viagra should not be used more than once per day or with alcohol. Viagra tablets do not cure erectile dysfunction or protect the user or a partner from a sexually transmitted disease. All questions and concerns regarding Viagra use and medication side effects should be discussed with one's medical provider and pharmacist prior to using Viagra prescription tablets.
How to Get a Viagra (Sildenafil) Prescription with Push Health
- Complete a brief health intake. Answer a few questions about your erectile dysfunction symptoms, current medications - especially any nitrates or blood pressure medications - and relevant cardiovascular or medical history.
- Connect with a licensed medical provider. A provider will review your information and evaluate whether Viagra (sildenafil) is appropriate - and whether 25 mg, 50 mg, or 100 mg is the right starting dose. Same-day consultations are available.
- Receive your prescription electronically. Your provider will send a prescription to a pharmacy of your choice - no office visit required. Most pharmacies will dispense generic sildenafil in place of branded Viagra.
- Pick up your medication same day. Generic sildenafil is available at most retail pharmacies, typically under $2 per tablet.
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Last updated August 11, 2026. Given the evolving nature of medicine and science, this information might not be accurate and should not be construed as medical advice or diagnosis / treatment recommendations. Please consult a licensed medical provider if you have additional questions. Please call 911 immediately or go to the nearest emergency room if you believe you are experiencing a medical emergency.