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Compared with other PDE5 inhibitors used in treating erectile dysfunction, tadalafil has the longest duration of action, making it the only once-daily agent of all PDE5 inhibitors. Tadalafil, a carboline derivative with vasodilatory activity, selectively inhibits cyclic guanosine monophosphate (cGMP)-specific phosphodiesterase type 5 (PDE5). PDE5 is important in regulating intracellular concentrations of cGMP by catalyzing its hydrolysis and inactivating cGMP.

In clinical pharmacology studies, Cialis was shown to potentiate the hypotensive effect of nitrates. In such circumstances, nitrates should still only be administered under close medical supervision with appropriate hemodynamic monitoring. Many of these events were reported to occur during or shortly after sexual activity, and a few were reported to occur shortly after the use of Cialis without sexual activity. Others were reported to have occurred hours to days after the use of Cialis and sexual activity. It is not possible to determine whether these events are related directly to Cialis, to sexual activity, to the patient's underlying cardiovascular disease, to a combination of these factors, or to other factors.

You may wonder how Cialis compares with other medications that are prescribed for similar uses. Here we look at how Cialis and Viagra are alike and different. However, if you take Cialis each day for either benign prostatic hyperplasia (BPH) or ED, you’ll consistently have medication in your system. The dosages in this article are typical dosages provided by the drug manufacturer. If your doctor recommends Cialis for you, they will prescribe the proper dosage for you.

Peak concentration in the blood is reached after two hours for tadalafil and about one hour for sildenafil. As such, we always suggest taking medication about an hour or two before sexual activity. The time it takes for the drug to function will vary between patients, so use prior experience as a guide. Vidalista 40 contains 40mg of the active ingredient Tadalafil.

Estimates suggest that 18 million males in the United States struggle with ED, including 18% of males 20 or older. ED often results in low self-esteem or other mental health concerns, highlighting the importance of treating this condition. For specific information about your personal medical condition, please contact our doctors or pharmacists for advice on [email&nbsp