Viagra and similar drugs are well known. Two of the drugs, Viagra and Levitra, work in a similar way. Viagra and Levitra are both approved by the FDA as a treatment for erectile dysfunction. They are the same. Viagra and Levitra are both approved by the FDA as a treatment for erectile dysfunction. Cialis, Levitra, and Stendra are both approved as ‘sildenafil’. They are widely marketed and usually sold by a pharmaceutical company. Generic Cialis contains the active substance Tadalafil which belongs to a group of medicines called phosphodiesterase type 5 inhibitors. Following sexual stimulation, the active substance of Cialis inhibits an enzyme that is responsible for regulating blood flow to the penis. Sexual stimulation is required before the medication will work - without stimulation it will have no effect. Cialis augments and supports sexual performance and relationships. A range of factors contribute to erectile dysfunction, including lifestyle choices, mental state, chronic disease, and injuries and operations.

Viagra can be unsuitable for men with certain prostate conditions, including prostate cancer. Grapefruit and grapefruit juice should be avoided with Tadalafil as it could cause a dangerous drop in blood pressure. If you are prescribed nitrates for angina, do not use any other medicines such as nitroglycerin or isosorbide dinitrate, such as isosorbide mononitrate. Some recreational drugs called “poppers” also contain nitrates, such as amyl nitrate and butyl nitrate. Do not use Tadalafil if you are using these drugs. Ask your doctor or pharmacist if you are not sure if any of your medicines are nitrates. Tell your doctor about all the medicines you take including prescription and non-prescription medicines, vitamins, and herbal supplements. Tadalafil tablets and other medicines may affect each other. Always check with your doctor before starting or stopping any medicines. Especially tell your healthcare provider if you take any of the following*:. • medicines called alpha blockers. These include Hytrin ® terazosin HCl, Flomax ® tamsulosin HCl, Cardura ® doxazosin mesylate, Minipress ® terazosin HCl, Uroxatral ® alfuzosin HCl, Jalyn ® dutasteride and tamsulosin HCl or Rapaflo ® Alpha-blockers are sometimes prescribed for prostate problems or high blood pressure.

Prices may prove beneficial for some patients as it provides quick cures for ED and recovery may be shorter than that of an oral PDE5 inhibitor. Avanafil active ingredient in Stendra may also help to improve erectile function. In this trial, the clinician suggested that avanafil to patients is a safe and effective drug, but did not experience side effects. Nonarteritic anterior ischemic optic neuropathy reported rarely during postmarketing experience in temporal association with use of all PDE type 5 inhibitors. As such, it is always best to use the medication regimen prescribed for sildenafil before considering any change in dosage. It is recommended that 50mg of Viagra should be taken 25 to 60 minutes before sexual activity. The effects will be continuous, and the effects will start at maximum two hours. The maximum dose is one 50mg tablet taken. Viagra tablets should be swallowed with water. The may be taken with or without food, however taking them with a large or fatty meals may delay the onset of activity. Grapefruit can be taken with or without food. The chemical safety of the tablet may vary.