what is the chemical structure of cialis?

Answer 1

The empirical formula for tadalafil is C22H19N3O4, and its official organic name is (6R,12aR)-6-(1,3-benzodioxol-5-yl)-2,3,6,7,12,12a- hexahydro-2-methyl-pyrazino[1 ,2 :1,6]pyrido[3,4-b]indole-1,4-dione. The molecular weight is 389.41. The tablets are yellow, film-coated, and almond-shaped, and are produced in 5, 10, or 20mg doses.


DRUG CLASS AND MECHANISM: Tadalafil is an oral drug that is used for treating impotence (the inability to attain or maintain a penile erection). It is in a class of drugs called phosphodiesterase inhibitors that also includes sildenafil (Viagra) and vardenafil (Levitra).

Answer 2

DRUG: CIALIS 20MG TABLETS GENERIC NAME: TADALAFIL (tah-DA-la-fil) COMMON USES: This medicine is a phoshodiesterase inhibitor used to treat function problems such as impotence or erectile dysfunction.

CIALIS IS NOT FOR EVERYONE. Tell your doctor about your medical conditions and all medications, and ask if you're healthy enough for sexual activity. Don't take CIALIS if you take nitrates, often prescribed for chest pain, as this may cause a sudden, unsafe drop in blood pressure. Don't drink alcohol in excess (to a level of intoxication) with CIALIS, as this may increase your chances of getting dizzy or lowering your blood pressure. CIALIS does not protect against sexually transmitted diseases, including HIV.

The most common side effects with CIALIS were headache and upset stomach. Backache and muscle ache were also reported, sometimes with delayed onset. Most men weren't bothered by the side effects enough to stop taking CIALIS. As with any ED tablet, in the rare event of priapism (an erection lasting more than four hours), seek immediate medical help to avoid long-term injury. In rare instances, men taking prescription ED tablets (including CIALIS) reported a sudden decrease or loss of vision. It's not possible to determine if these events are related directly to the ED tablets or to other factors. If you have a sudden decrease or loss of vision, stop taking any ED tablet and call your doctor right away.

Individual results may vary. In clinical trials, CIALIS was shown to improve, up to 36 hours after dosing, the ability of men with ED to have a single successful intercourse attempt. CIALIS has not been studied for multiple sexual attempts per dose.

CIALIS is available by prescription only. For additional safety information, talk to your doctor about this medicine and see the full Patient Information.

Answer 3

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