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TABLETS (Viagra) Initial dose: 50 mg orally once a day, as needed, about 1 hour prior to sexual activity Maintenance dose: May increase to 100 mg or decrease to 25 mg once a day, based on efficacy and tolerability. Maximum dose: 100 mg orally once a day Comments: This drug may be taken anywhere from 30 minutes to 4 hours before sexual activity. Sildenafil and other PDE5 inhibitors are used off-label to alleviate vasospasm and treat severe ischemia and ulcers in fingers and toes for people with secondary Raynaud’s phenomenon; these drugs have moderate efficacy for reducing the frequency and duration of vasospastic episodes. What is sildenafil (Viagra)? Sildenafil is a medicine used to treat erectile dysfunction (ED, also called impotence). It is sometimes known by its generic name sildenafil, and sometimes known by its trade name Viagra. Other brands of the same medicine are also available. How does sildenafil work? If you often forget doses, it may help to set an alarm to remind you. You could also ask your pharmacist for advice on other ways to help you remember to take your medicine. If you take too much. Taking too much sildenafil can cause unpleasant side effects. viagra reaction to other drugs

Now, it s one of several other ED medications in the same class. Viagra is a phosphodiesterase 5 (PDE5) inhibitor. It works by causing more blood to flow to the penis for an erection. This effect can be beneficial for ED. But it can also cause bothersome side effects, like headaches, flushing, and upset stomach. Viagra is available as the generic drug sildenafil. A generic drug is considered as safe and effective as the original drug. And generics tend to cost less than brand-name drugs. If your doctor Beyond Viagra (sildenafil), several medications can help erections. Oral medications. Oral drugs, including Viagra, may be the first approach to treating ED. Viagra is effective because it slows Viagra takes around 30 minutes to become effective and lasts about 4 hours. Cialis lasts much longer – up to 36 hours in some cases. If you are allergic to any medications, including other ED

Males between the ages of would be eligible to buy four tablets after a consultation with a pharmacist. In 2024, the Medicines and Healthcare products Regulatory Agency (MHRA) enacted legislation that expanded this nationwide, [83] allowing a particular branded formulation of Sildenafil, Viagra Connect (50 mg), to be sold over the Sildenafil (Viagra). This medicine works best when you take it on an empty stomach an hour before sex. The body takes longer to absorb it after a high-fat meal or alcohol. how to buy viagra tablets Sildenafil may be used to treat erectile dysfunction (ED or impotence) in men (Viagra brand) or pulmonary arterial hypertension in both men and women (Revatio brand), depending on the brand. Sildenafil blocks the action of an enzyme known as cGMP-specific phosphodiesterase type-5 (PDE-5). This medicine is available on prescription and you can also buy it from most pharmacies. It comes as standard tablets, chewable tablets, and as a liquid that you swallow. Key facts. It usually takes 30 to 60 minutes for sildenafil to work for erectile dysfunction. You can take it up to 4 hours before you want to have sex.