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Treat erectile dysfunction with the original little blue pill that has helped men feel confident in bed for decades. We’ll match you with a physician licensed in your state to evaluate you for all our prescription options, including super-affordable generic Viagra. This happens in a matter of minutes from the comfort of home, so you can treat ED easily, discreetly, and on your terms.

Viagra® (sildenafil citrate) Tablets


* Prescription products require an online consultation with a physician who will determine if a prescription is appropriate.

* Risks of this medication can include flushing, headache, nausea, dizziness, chest or arm pain and in rare cases, changes in vision or loss of sight. Seek emergency care…Read more

This page has been medically reviewed by Peter J. Stahl, MD.

What is Viagra?

Viagra is a brand-name erectile dysfunction medication that became the first FDA-approved oral treatment for ED in 1998. Viagra is a PDE-5 inhibitor, which helps to relax blood vessels and improve blood flow to important parts of your body. As the original ED drug, Viagra has been on the market for over 20 years and trusted by millions of couples.

Can I get Viagra online?

Hims offers access to genuine Viagra® online — just like you’d get at your local pharmacy, but without ever leaving home. Through the Hims platform, you get to skip in-person trips and co-pays (so no doctor’s office, no waiting room and no lines). Instead, we provide a secure online consultation with a doctor licensed in your state to evaluate you for a prescription. If the doctor determines it’s appropriate, you’ll get a prescription and options to get genuine, FDA-approved Viagra® delivered right to your door at a pace that suits you.

How to take Viagra

Always take Viagra as instructed by your doctor. Typically you’ll use it about one hour before you plan to have sex. Beginning in about 30 minutes and for up to 4 hours, Viagra can help you get hard if you are sexually excited. If you take Viagra after a high-fat meal (such as a cheeseburger and french fries), the medicine may take a little longer to start working.

Viagra Safety

If the doctor prescribes you Viagra®, your prescription will come with a treatment plan, and your prescription order comes with detailed safety information. Be sure to take a minute to read through it. Certain things don’t mix with Viagra® — like nitrites, alcohol in excess, grapefruit and alpha-blockers. And easy partner — you shouldn’t take it more than once daily. Precaution is as important as the fix.

Viagra side effects

As with all medication, side effects may occur. The side effects most commonly associated with Viagra® include headaches, flushing, upset stomach, abnormal vision, runny or stuffy nose, muscle and back pain, nausea, dizziness, and rash. As always, if you have questions or any side effects that bother you or linger, talk with our medical professionals and we will advise accordingly. If you have an erection that lasts longer than 4 hours, get medical help immediately.

Important Safety Information

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Frequently asked questions about Viagra®

Where can I buy Viagra?
In the United States, you can get Viagra from most major pharmacies and online with a prescription. While you cannot simply “buy” Viagra over-the-counter, Viagra is widely available throughout the U.S. with a prescription.
To get a prescription for Viagra, you can physically visit a doctor or complete an online medical visit with a healthcare provider on your computer. Online pharmacies can ship Viagra directly to your door in discreet packaging for maximum convenience.
What does Viagra do?
Viagra, a brand-name ED drug created by Pfizer, is the original drug in the PDE5 inhibitor class of medications and is very effective in treating erectile dysfunction. Viagra can help you get an erection or it can help you to maintain an erection for longer. If your current erection is not allowing you to have satisfying sex, a prescription for Viagra may be able to help you.
How does Viagra work?
Viagra works by temporarily slowing the effect of the enzyme that makes your penis return from an erect to a flaccid state after sex. If you have erectile dysfunction, the enzyme phosphodiesterase type 5 (PDE5) often works too quickly to make your penis flaccid, which can make it difficult for you to get an erection in the first place or keep one for long enough to ejaculate. PDE5 inhibitors slow the work of PDE5, which helps you to keep an erection during sexual activity.
However, Viagra does not automatically give you an erection just because you take the pill. You will still need to be sexually aroused for the medication to work. The good news is that you don’t need to worry about Viagra causing an untimely erection.
How long does Viagra last?
Viagra typically lasts in full effect for about two to three hours after you take the pill. Viagra can work for up to four or five hours, but you will likely notice that its effectiveness starts to decrease after two or three hours. This is because the half-life of Viagra is about four hours, which means that only half of the drug will still be in your system after that time, reducing its effect on your erection.
Keep in mind that Viagra is typically not effective until about an hour after you take the drug, so you will need to plan ahead for sex. If you are looking for an ED drug that works around the clock, Cialis or tadalafil might be the best option for you.
What is the recommended dose of Viagra?
Viagra is available in three doses: 25 mg, 50 mg and 100 mg. The 25 mg dose is the lowest available dosage of Viagra, which is only used if you are unable to tolerate higher doses. The 50 mg dose is the “normal dose” or starting dose of Viagra for most men. If the 50 mg dose is not effective for you, your doctor may prescribe you maximum strength Viagra, which is 100 mg.
It is important to take your prescribed Viagra dose and to only take a maximum of one Viagra dose per day. Taking too much Viagra can have dangerous effects on your blood pressure and cause you to lose consciousness.
Is there anything over the counter that works like Viagra?
The only ED treatments that work like Viagra are other PDE5 inhibitors, which are all available by prescription-only in the United States. If you are experiencing erectile dysfunction, it is best to seek medical advice from a doctor and get an effective prescription drug treatment rather than trying your hand at home remedies or “over-the-counter” treatments.
How much does Viagra cost?
Viagra is a brand-name erectile dysfunction medication, so it tends to be more expensive than the generic version of the medication, sildenafil citrate. Through hims, Viagra is $70 per tablet. At other pharmacies, prices can range from tens to hundreds of dollars.
However, if you are looking for effective ED treatment without the high price tag, you can get generic sildenafil for a fraction of the cost of brand name Viagra.
Is Viagra safe?
In general, Viagra is safe when taken as prescribed. Viagra was rigorously tested in clinical trials prior to FDA approval and now has over two decades of use by men around the world. However, if you have certain health conditions, such as cardiovascular or heart problems, heart failure, irregular heartbeat, heart disease or a recent heart attack, Viagra may not be a safe option for you.
In addition, if you have high blood pressure, low blood pressure, multiple myeloma, sickle cell anemia, leukemia, retinitis pigmentosa, bleeding problems, stomach ulcers, kidney problems, liver problems or Peyronie’s Disease, disclose these conditions to your doctor to ensure that you are clear to take Viagra.
Is Viagra better than other ED medications?
Viagra may be better for you and your sex life than other ED medications, but it is not inherently better or worse than other ED treatment options. If you want a drug that you can take as-needed and that works quickly and effectively during sexual stimulation, Viagra might be right for you. If you want around-the-clock ED treatment, daily dosages of Cialis or tadalafil might be right for you. If you want a super quick effect, Stendra might be the best option. Viagra is a great ED option for many men, but the best ED medication is the one that is right for you.
What are common Viagra side effects?
Common Viagra side effects include headache, flushing, upset stomach, eye problems (such as vision changes or blurred vision), stuffy or runny nose, back pain, muscle pain, nausea, dizziness or rash. These side effects are generally not dangerous, but consult your doctor if they persist or are particularly bothersome.
There are some other rare, serious side effects of Viagra, including sudden vision loss, sudden hearing loss and chest pain, dizziness or nausea during sex. Priapism, or an erection lasting longer than four hours, is also a potential serious side effect. All of these serious side effects require emergency medical attention.
Are there drugs that I should not take with Viagra?
There are known drug interactions or contraindications with Viagra, including the following drugs:
  • Nitrates, such as nitroglycerin or isosorbide mononitrate, which are commonly used for angina
  • Guanylate cyclase stimulators, also called Adempas or riociguat
  • Alpha-blockers such as Hytrin (terazosin HCl), Flomax (tamsulosin HCl), Cardura (doxazosin mesylate), Minipress (prazosin HCl), Uroxatral (alfuzosin HCl), Jalyn (dutasteride and tamsulosin HCl), or Rapaflo (silodosin)
  • HIV protease inhibitors, such as ritonavir (Norvir), indinavir sulfate (Crixivan), saquinavir (Fortovase or Invirase), or atazanavir sulfate (Reyataz)
  • Some oral antifungal medicines, such as ketoconazole (Nizoral) and itraconazole (Sporanox)
  • Some antibiotics, such as clarithromycin (Biaxin), telithromycin (Ketek), or erythromycin
  • High blood pressure medication
  • Poppers, such as amyl nitrate
  • Other treatments for ED, including Stendra (avanafil), Cialis (tadalafil), Levitra (vardenafil) or other forms of Viagra, such as sildenafil
  • Revatio or Adcirca, two brand-name drugs used to treat pulmonary arterial hypertension. These medications are also PDE5 inhibitors and cannot be taken at the same time as Viagra

If you take any of the above medications, discuss your options with your doctor. If you are prescribed one of the above medications while taking Viagra, tell your doctor.

If you are interested in a prescription, Hims will match you with an independent physician who will evaluate whether or not you are an appropriate candidate for the prescription product and if appropriate, may write you a prescription for the product.