Sildenafil citrate is designated chemically as 1-[[3-(6,7-dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3d]pyrimidin-5-yl)-4-ethoxyphenyl]sulfonyl]-4-methylpiperazine citrate and has the following structural formula: shelf life of levitra
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In rare instances it is possible that a prolonged and possibly painful erection may occur after taking CIALIS. information on viagra CIALIS 20 mg tablets are yellow, film coated, almond shaped tablets, marked "C20" on one side.GENERAL INFORMATION ABOUT LevitraViagra (sildenafil citrate) is supplied as blue, film-coated, rounded-diamond-shaped tablets containing sildenafil citrate equivalent to the nominally indicated amount of sildenafil and debossed on the obverse and reverse sides as follows:
Especially tell your healthcare provider if you take any of the following:Psychiatric cialis expiration date Sildenafil at steady state, at a dose not approved for the treatment of erectile dysfunction (80 mg t.i.d.) resulted in a 50% increase in AUC and a 42% increase in Cmax of bosentan (125 mg b.i.d.).
Carcinogenesis — Tadalafil was not carcinogenic to rats or mice when administered daily for 2 years at doses up to 400 mg/kg/day. Systemic drug exposures, as measured by AUC of unbound tadalafil, were approximately 10-fold for mice, and 14- and 26-fold for male and female rats, respectively, the exposures in human males given Maximum Recommended Human Dose (MRHD) of 20 mg.
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Be careful not to take Levitra more than once every 24 hours and allow at least one day between consecutive dosages. Should your erection be painful or last for a prolonged period of time (beyond 4 hours) you should get medical attention immediately. Prolonged erection, also known as priapism, can end up damaging the penis.Prev page:cialis buy