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Important Safety Information
Important Safety Information
While most patients can safely use Friday Plans, it is important to check with your primary care provider prior to starting any new medications including Sildenafil.
Do not take Sildenafil (sildenafil citrate) if you:
• Take any medicines called nitrates, often prescribed for chest pain, or guanylate cyclase stimulators like Adempas (riociguat) for pulmonary hypertension. Your blood pressure could drop to an unsafe level.
• Use street drugs called "poppers" such as amyl nitrate and/or butyl nitrate.
• Use recreational drugs, including but not limited to Cocaine, Methamphetamine, or MDMA.
• Are allergic to Sildenafil or any of the ingredients in Sildenafil.
Discuss your health with your doctor to ensure that you are healthy enough for sex. Sildenafil can cause a drop in blood pressure which may cause dizziness and, in rare cases, loss of consciousness. Do not operate heavy machinery until you know how Friday Plans affects you. Although rare, serious side effects can occur and include chest pain or pressure, palpitations, shortness of breath, impaired mental status or mentation, erections lasting 4 or more hours, and changes in vision or hearing. If you experience any of these, it is recommended that you go to the emergency room or call 911 immediately.
Sildenafil can cause serious side effects. Rarely reported side effects include:
• An erection that will not go away (priapism). If you have an erection that lasts more than 4 hours, get medical help right away. If it is not treated right away, priapism can permanently damage your penis.
• Sudden vision loss in one or both eyes. Sudden vision loss in one or both eyes can be a sign of a serious eye problem called non-arteritic anterior ischemic optic neuropathy (NAION). Stop taking Sildenafil and call your healthcare provider right away if you have any sudden vision loss.
• Sudden hearing decrease or hearing loss. Some people may also have ringing in their ears (tinnitus) or dizziness. If you have these symptoms, stop taking Sildenafil and contact a doctor right away.
Before you take Sildenafil, tell your healthcare provider if you:
• Have or have had heart problems such as a heart attack, irregular heartbeat, angina, chest pain, narrowing of the aortic valve, or heart failure.
• Have had heart surgery.
• Have pulmonary hypertension.
• Have had a stroke, transient ischemic attack (TIA), low blood pressure, or high blood pressure.
• Have abnormalities, surgeries, injuries, or conditions affecting the groin including the scrotum, testicles, and penis.
• Have had an erection that lasted for more than 4 hours.
• Have sickle cell anemia or cancers affecting blood cells such as multiple myeloma and leukemia.
• Have retinitis pigmentosa, a rare genetic (runs in families) eye disease.
• Have ever had severe vision loss, including an eye problem called Non-Arteritic Anterior Ischemic Optic Neuropathy (NAION).
• Have a bleeding or clotting disorder.
• Have or had stomach or intestinal ulcers.
• Have liver problems
• Have kidney problems or are having kidney dialysis have any other medical conditions.
Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements.
• Sildenafil may affect the way other medicines work, and other medicines may affect the way Sildenafil works, causing side effects. Especially tell your healthcare provider if you take any of the following:
• Medicines called nitrates.
• Medicines called guanylate cyclase stimulators such as Adempas (riociguat).
• Medicines called alpha-blockers such as Hytrin (terazosin HCl), Flomax (tamsulosin HCl, Cardura (doxazosinmesylate), Minipress (prazosin HCl, Uroxatral (alfuzosin HCl, Jalyn (dutasteride and tamsulosin HCl), or Rapaflo (silodosin). Alpha-blockers are sometimes prescribed for prostate problems or high blood pressure. In some patients, the use of Sildenafil with alpha-blockers can lead to a drop in blood pressure or to fainting.
• Medicines called HIV protease inhibitors, such as ritonavir (Norvir), indinavir sulfate (Crixivan), saquinavir (Fortovase or Invirase), or atazanavir sulfate (Reyataz).
• Some types of oral antifungal medicines, such as ketoconazole (Nizoral) and itraconazole (Sporanox)
• Some types of antibiotics, such as clarithromycin (Biaxin), telithromycin (Ketek, or erythromycin.
• Other medicines that treat high blood pressure
• Other medicines or treatments for erectile dysfunction
• Viagra contains Sildenafil, which is the same medicine found in another drug called REVATIO. REVATIO is used to treat a rare disease called pulmonary arterial hypertension (PAH). Sildenafil should not be used with REVATIO or with other PAH treatments containing Sildenafil or any other PDE5 inhibitors (such as Adcirca [tadalafil])
• Sildenafil does not protect against sexually transmitted diseases, including HIV.
Common side effects of Sildenafil include:
Headache; flushing; upset stomach; abnormal vision, such as changes in color vision (such as having a blue tinge) and blurred vision; stuffy or runny nose; back pain; muscle pain; nausea; dizziness; rash.
Sildenafil (sildenafil citrate) is prescription medicine used to treat erectile dysfunction (ED).
Sildenafil is not for women or children.
* Prescription products require an online consultation with a physician who will determine if a prescription is appropriate.
This site has been medically reviewed by Dr. Neil Shah, MD.
* Prescription products require an online consultation with a medical provider who will determine if a prescription is appropriate.