Tadalafil (tadalafil) is a drug used to treat erectile dysfunction (ED) and lower urinary tract symptoms associated with benign prostatic hyperplasia (BPH). 20 mg is a common dose specification for tadarafe.

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Tadalafil (tadalafil) is a drug used to treat erectile dysfunction (ED) and lower urinary tract symptoms associated with benign prostatic hyperplasia (BPH). 20 mg is a common dose specification for tadarafe.

  1. I. the mechanism of action
  2. II. Points for attention in use

I. the mechanism of action

1 、Effect on erectile dysfunction

Tadalafil is a phosphodiesterase 5 (PDE5) inhibitor. During sexual stimulation, nitric oxide (NO) is released from neuronal terminals in the penile sponge. NO activates guanosine monophosphate cyclase (cGMP), which increases the level of cyclic guanosine monophosphate (cGMP), resulting in smooth muscle relaxation and blood flow into the corpus cavernosum. PDE5 breaks down cGMP, and tadalafil increases the concentration of cGMP by inhibiting PDE5. Maintain penile erectile function.

2 、Effect on lower urinary tract symptoms associated with benign prostatic hyperplasia

-there is PDE5 in the prostate and bladder neck. Tadalafil can relax the prostate smooth muscle and bladder detrusor muscle and improve the lower urinary tract symptoms of patients with benign prostatic hyperplasia, such as dysuria, frequent urination, urgent urination and so on.

II. Points for attention in use

1 、Taking method

Tadalafil 20 mg can be taken as needed, about 30 minutes-1 hour before sexual activity, but can also be adjusted according to individual conditions and doctor's advice.

-swallow the whole tablet when taking it. Do not break, chew or crush the tablet.

2 、Contraindication

-Tadalafil is prohibited in patients who are taking any form of nitrates (such as nitroglycerin, isosorbide mononitrate, etc.) because a combination of the two can lead to severe hypotension.

-it is forbidden for people who are allergic to tadarafi.

3 、Adverse reaction

Common adverse reactions include headache, facial flushing, indigestion, back pain, myalgia, etc. most of these adverse reactions are mild to moderate and usually relieve themselves in a short period of time.

-A small number of patients may have eye adverse reactions such as blurred vision and eye pain. If such symptoms occur, they should seek medical attention in time.

Tadalafil must be used under the guidance of a doctor, who will determine whether it is suitable for use and the dose and course of treatment according to the patient's specific health status (such as cardiovascular disease history, liver and kidney function, etc.), drug interaction and other factors.


According to the information you provide, I cannot accurately judge the name or use of the drug you are referring to. & quot;Tadalafil" is a drug ingredient commonly used to treat male erectile dysfunction (ED), possibly under the trade name Cialis. & quot;20 miligramos" refers to the dose of the drug, that is, 20 milligrams. If you want more information or instructions on how to use the drug, please refer to the following:

1 、IndicationTadalafil is mainly used in the treatment of male erectile dysfunction.

2 、ContraindicationIt is prohibited for people who are allergic to this product or who are taking any form of nitrate drugs.

3 、Adverse reactionSide effects such as headache, indigestion and back pain may occur.

4 、Matters needing attentionConsult your doctor, especially those with cardiovascular disease, before using it.

5 、Usage and dosageIt is usually recommended to take it 30 minutes to 1 hour before sex, the specific dose and usage should be in accordance with the doctor's advice.

As the information you provided is incomplete, I am unable to give more specific suggestions. If you can provide more information about the name or use of the drug, I will be able to provide you with a more accurate answer. Be sure to consult a professional doctor or pharmacist before using any drug.

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