a-blockers often refer to α-adrenergic receptor blockers, commonly including non-selective α-blockers such as phentolamine and selective α-blockers such as tamsulosin hydrochloride extended-release tablets and yohimbine.
1. Phentolamine: non-selective alpha blocker. It is commonly used in the treatment of peripheral vasospastic diseases such as Raynaud’s syndrome; drip exsanguination of norepinephrine; intractable congestive heart failure and acute myocardial infarction. Its common adverse reactions include hypotension, abdominal pain and diarrhea. It should be contraindicated in patients with gastritis and coronary heart disease.
2. Tamsulosin Hydrochloride Extended-Release Tablets: It is a selective α1 blocker. It is often used to treat benign prostatic hypertrophy and improve urinary difficulty. Adverse reactions include postural hypotension, nausea, vomiting, dizziness and so on. Allergic to drug components, renal insufficiency, etc. are prohibited.
3. Yohimbine: It is a selective α2 blocker. It is commonly used in the treatment of male hypogonadism. Adverse reactions mainly include nausea, vomiting, dizziness and so on. The use of the drug is contraindicated in patients who are allergic to the components of the drug.
The use of specific drugs should be carried out under the guidance of a doctor, and if there is any discomfort after taking the drug, it is recommended to consult a doctor in time.