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If you buy through links on this page, we may earn a small commission. Here’s our process. Viagra is a prescription drug that people can take to help with erectile dysfunction. Several online pharmacies sell Viagra, but a person needs a current prescription. Share on Pinterest A quick look at where to buy Viagra onlineBest for free follow-up appointments: RomanBest for free shipping: HimsBest for discreet packaging: LemonaidBest for discreet packaging: REX MD What is Viagra Viagra is the brand name version of sildenafil. Doctors usually prescribe Viagra to help relieve erectile dysfunction, which causes a person to have difficulty getting or maintaining an erection. Following sexual stimulation, taking Viagra helps increase blood flow to the penis, which can help individuals maintain an erection for sexual intercourse. However, doctors do not recommend taking more than one dose of Viagra daily. This drug can start working within 30 minutes, and its effects can last for 4 hours. Although doctors usually prescribe 50 milligrams (mg) of Viagra, they may lower this to 25 mg or increase it to 100 mg. How to buy Viagra online People can purchase Viagra online from several online pharmacies and telehealth companies. However, the drug is only available with a prescription. Some online pharmacies can fill an electronic prescription and notify the person when Viagra is available for collection at their local pharmacy. Other online pharmacies offer delivery to the person’s door. If an individual does not have a current prescription, some online pharmacies and telehealth companies may offer an online consultation with a doctor via a phone or video call. This consultation may lead to the doctor writing a prescription for Viagra, which the company can then fill. However, people should never purchase Viagra from companies that do not require a prescription. One 2012 study found that 77% of Viagra that individuals bought online from companies that did not require a prescription were counterfeit. In addition to companies not requiring a prescription, some other warning signs that online Viagra may not be genuine include the following:The company ships the Viagra from a different address than where it claims to be based.The Viagra does not come with a product information leaflet.The Viagra does not come with any safety warnings. Therefore, people should research companies that sell Viagra to ensure they are not buying counterfeit drugs before purchasing. Learn more about buying erectile dysfunction pills online here. Top places to buy Viagra online Please note that the writer of this article has not tried any of these products. All information presented here is purely research-based. Medical News Today follows a strict product selection and vetting process. Learn more here. For free follow-up appointments Roman Roman offers various treatment options for conditions such as erectile dysfunction, hair loss, and premature ejaculation. The company uses United States-licensed healthcare professionals to run its pharmacy service. To order from Roman, a person describes their symptoms to a licensed physician or nurse practitioner for evaluation. Within 24 hours, the healthcare professional contacts the individual to discuss treatment options. This service is free of charge, with free unlimited follow-up appointments. Roman offers Viagra and generic sildenafil in 25-, 50-, or 100-mg doses. The healthcare professional who assesses an individual’s case can suggest which dose is most suitable for that person. The company then sends the medication using discreet packaging. Learn more about Roman here.LEARN MORE For free shipping Hims Hims is an online pharmacy service that caters to male wellness. This company sells Viagra on a prescription-only basis. Individuals must first have an online consultation with a local licensed physician to receive a prescription if they do not already have one. Hims states that the online consultation does not take a long time. A person must first answer questions about their medical history and symptoms before being connected with a healthcare professional. For this consultation, an individual needs proof of identity and a credit card. This consultation and any shipping are free. Hims sends all medications in discreet packaging. The company also sells Viagra and generic sildenafil in various doses through its website. Learn more about Hims here.LEARN MORE For discreet packaging Lemonaid Lemonaid is an online pharmacy that provides medication for many different conditions, including erectile dysfunction. The company sells sildenafil on a prescription-only basis. These medications are available in 25-, 50-, and 100-mg doses. To order with Lemonaid, the person fills in and submits a medical history questionnaire and provides information about their medical condition. A licensed doctor or nurse then reviews the information and contacts the individual to discuss their treatment, with the initial consultation costing $25. This price includes a doctor filling in a prescription. The company offers shipping using discreet packaging. Learn more about Lemonaid here.LEARN MORE For free consultations REX MD REX MD is an online health clinic that focuses on male health. The company sells sildenafil on a prescription-only basis. To order with REX MD, a person needs to fill out an online survey and provide government-issued identification to verify their medical profile. They can then have an online consultation with a licensed doctor. If the individual is medically suitable for the treatment, the doctor can then provide a prescription. The company offers free 2-day delivery and discreet packaging. Sildenafil is available in 25-, 50-, and 100-mg doses. Prices start at $10 per dose. Learn more about REX MD here.LEARN MORE Pros and cons of Viagra People who use Viagra may notice that they find it easier to get and keep an erection. However, they should also discuss any potential safety considerations with a healthcare professional before using the drug. The sections below look at some advantages and disadvantages of using Viagra in more detail. Advantages Several clinical studies have investigated the effects of Viagra on erectile dysfunction. Research suggests that people who take this drug may be more likely to get and maintain an erection than those who do not. Although the percentage of individuals who find that Viagra helps them differs depending on their dose, all doses seem to be more effective than not taking the medication. Additionally, in the clinical studies, while the number of times per week the participants had penetrative sex did not change while taking Viagra, the individuals did report more success in maintaining an erection. Disadvantages Viagra may not be suitable for everyone, including those who:have had an allergic reaction to Viagra or sildenafiltake nitrates or nitroglycerinshave a heart or liver conditionhave had a stroke or heart attackhave low blood pressurehave one of several rare inherited eye conditions, including retinitis pigmentosa Viagra or sildenafil can also cause some side effects, including:headachesskin flushing or a rashindigestionnasal congestionback pain and muscle painnauseadizziness Learn more about the safety and side effects of Viagra here. Viagra is also unsuitable for females or children. Because the drug is a prescription medication, a doctor will discuss any potential side effects and other safety considerations with each individual before prescribing this drug. When to contact a doctor A person needs to contact a doctor to receive a prescription for Viagra or sildenafil. The doctor can recommend which strength is most suitable, and an individual can have follow-up consultations to ensure that the drug and dose are still suitable for their condition. A doctor can also advise a person on whether or not Viagra or sildenafil may interact with other medications or any recreational drugs or dietary supplements they are currently using. In some cases, Viagra or sildenafil can cause serious side effects. If a person experiences any of the following, they should seek immediate medical attention:chest painpainful erections or erections that last for longer than 4 hoursvision lossfeverswelling and peeling of the skinblisters in and around the mouth, genitals, and eyesanaphylaxis, a serious allergic reaction Frequently asked questions Below are some of the most common questions and answers about Viagra. Can I buy Viagra over the counter No, Viagra is not available over the counter in the U.S. It requires a prescription. What are Viagra s side effects Some side effects of Viagra include:headachesindigestionback painnausea Viagra can also interact with other medications. For this reason, people should speak with a healthcare professional before taking it. How long does Viagra take to start working Viagra may start working within 30 minutes. How long does Viagra last Viagra’s effects can last for around 4 hours. Summary Although Viagra is effective in treating erectile dysfunction, a person needs a prescription to purchase this medication. Various online pharmacies offer this drug, many of which offer online consultations with licensed doctors before purchase. Before buying Viagra online, a person should research the company offering the medication to ensure that it does not sell counterfeit drugs. Individuals should also seek immediate medical attention if they experience any severe side effects, such as anaphylaxis, when using Viagra. Last medically reviewed on September 21, 2022Erectile Dysfunction / Premature Ejaculation 4 sourcescollapsedMedical News Today has strict sourcing guidelines and draws only from peer-reviewed studies, academic research institutions, and medical journals and associations. We avoid using tertiary references. We link primary sources — including studies, scientific references, and statistics — within each article and also list them in the resources section at the bottom of our articles. You can learn more about how we ensure our content is accurate and current by reading our editorial policy.Campbell, N., et al. (2012). Internet-ordered Viagra (sildenafil citrate) is rarely genuine [Abstract].https://www.sciencedirect.com/science/article/abs/pii/S1743609515338108Sildenafil (including Viagra). (n.d.).https://www.nhs.uk/medicines/sildenafil-viagra/Smith, B. P., et al. (2021). Sildenafil.https://www.ncbi.nlm.nih.gov/books/NBK558978/Viagra - sildenafil citrate tablet, film coated. (2020).https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=ae2079a2-f3a9-4739-9611-0742b71e4761FEEDBACK:Medically reviewed by Jennie Olopaade, PharmD, RPH — By Suzy Davenport — Updated on September 21, 2022 Latest newsWhat sets 'SuperAgers' apart? Their unusually large neuronsOmega-3 may provide a brain boost for people in midlifeSeasonal affective disorder (SAD): How to beat it this fall and winterCDC: Monkeypox in the US 'unlikely to be eliminated in the near future'Why are more women prone to Alzheimer's? New clues arise Related Coverage3 places to buy erectile dysfunction (ED) medication online safelyMedically reviewed by Matt Coward, MD, FACS Erectile dysfunction pills that people can buy online without a prescription may contain harmful ingredients that the label does not list. Learn more.READ MORE7 of the best erectile dysfunction pumpsMedically reviewed by Joseph Brito III, MD A penis pump, also called a vacuum device, is a nondrug erectile dysfunction treatment. Find some options here.READ MOREViril X review 2022: What to knowMedically reviewed by Joseph Brito III, MD Viril X is a natural male enhancement supplement that may help with erectile dysfunction. Learn about what it is, pros and cons, and safety…READ MOREDo topical creams work for erectile dysfunction?Medically reviewed by Matt Coward, MD, FACS The FDA has not approved a topical cream for erectile dysfunction, but there are many alternatives to try. Read on to find out more about topical…READ MORE