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Sildenafil is most effective when taken at least 30 minutes to one hour before intimacy. For most people, it can provide ED relief for around four hours before it begins to decrease in the body.
Sildenafil can still be used to treat hypertension, but today, the primary use of this PDE5 inhibitor is to remedy ED. Other first-line treatment options for blood pressure and heart disease are ...
Viagra is an effective ED treatment that can improve performance, make arousals firmer, and improve your intimate life. Since those benefits are attractive whether you have ED or not, some men ...
Sildenafil, sold under the brand name Viagra among others, is a medication used to treat erectile dysfunction and pulmonary arterial hypertension. [4] [8] It is also sometimes used off-label for the treatment of certain symptoms in secondary Raynaud's phenomenon. [9] It is unclear if it is effective for treating sexual dysfunction in females. [8]
The labeled expiration date is a manufacturer's promise for a time until which the drug will have full efficacy and be safe as manufactured. [4] The labeled expiration date is not an indication of when a drug has become ineffective or unsafe to use. [4] Many drugs are effective for years after their expiration dates. [4]
One exception occurred during the 2010 Swine Flu Epidemic when the FDA authorized expired Tamiflu based on SLEP Data. [9]The US FDA is able to extend the shelf life of drugs throughout national, state, local, tribal, and territorial stockpiles through two legal means: by issuing an Emergency Use Authorization on using a drug past its expiration date (which is legally an unapproved use of a ...
Viagra (or sildenafil) lasts three to five hours after it’s consumed. Cialis (tadalafil) has a half-life of 17.5 hours, meaning this drug lasts up to 36 hours after it’s consumed.
Chemical structure of sildenafil (Viagra), the prototypical PDE5 inhibitor. A phosphodiesterase type 5 inhibitor (PDE5 inhibitor) is a vasodilating drug that works by blocking the degradative action of cGMP-specific phosphodiesterase type 5 (PDE5) on cyclic GMP in the smooth muscle cells lining the blood vessels supplying various tissues.