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Tadalafil is a medication that is taken as a tablet and used in the treatment of erectile dysfunction, or ED, in men. Some men are unable to maintain an erection for several reasons. It is common in older men, over the age of 65, but can occur in any stage of life. Occasional episodes of ED are normal, and do not usually require medications such as Tadalafil. But when it becomes a persistent problem, treatment might be in order

Tadalafil is prescribed to help men get an erection and keep it when they are sexually excited. It should be noted that Tadalafil treats erectile dysfunction, making it possible for a man to have sex, but it does not offer protection when he is having sex. It will not prevent pregnancy or sexually transmitted diseases.

Erections are caused by the increase of blood flow to the penis. Tadalafil works by expanding the arteries in the penis, so that blood flows into the penis, and constricting the veins leading out, so that more blood flows in and less flows out, leading to a sustained erection. Tadalafil works differently for different people; sometimes it works as quickly as a half an hour, sometimes up to an hour. Physicians recommend that you should take your dose about an hour before you plan to have sex; though you should not take more than one dose every day. The effects of Tadalafil can last up to thirty-six hours.

Tadalafil should only be taken as prescribed and under the supervision of a doctor. It is intended for men only, and has not been approved for use by women or children. If you are taking nitrates, medicines that are used for angina, you should avoid taking Tadalafil or any medications for ED. If you aren’t sure whether Tadalafil is appropriate for you, make sure to talk to your doctor or pharmacist before you take it.

As with all medications, if you are taking Tadalafil, you should be aware of possible side effects. Some common side effects of Tadalafil include headaches, flushing, heartburn or indigestion, stuffed up nose, changes in your vision—these can include seeing things with a blue tint, or general blurriness of your vision. Other possible side effects are diarrhea or urinary tract infections. Some side effects are much more rarely seen than the ones above; they include rashes on the face, sensitivity to light, shock, pain, chills, loss of balance, chest pain, and loss of energy or strength. Men who have problems with their kidneys, liver, or heart, should not take Tadalafil. They are at especially high risk for problems and increased side effects.

Other rare but serious possible side effects are migraines, chest pains, increased heart rate, low blood pressure, colitis, dry mouth, gingivitis, heart failure, abnormal liver function, fainting due to a drop in your blood pressure, and the formation of blood clots. Again, these last side effects are rare, but they do underscore the need to be in the care of a doctor while you are taking Tadilifil.

Tadalafil has the following structural formula:

Chemical structure of tadalafil

• Molecular formula of tadalafil is C22H19N3O4
• Chemical IUPAC Name is (6R-trans)-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
• Molecular weight is 389.404 g/mol
Tadalafil available : 5mg tablets, 10mg tablets, 20mg tablets

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