Tamsulosin usually does not cure frequent urination when taken only once. Tamsulosin is an alpha blocker that dilates the urethra in the prostate, making it effective for men with frequent urination due to prostate enlargement, as well as for men with frequent urination due to prostatitis. The drug is fast-acting, but taking it only once usually does not have the desired effect of the drug, much less cure the disease. Contraindications are that it is contraindicated in patients who are allergic to the components of tamsulosin hydrochloride, and it should be used with caution if low blood pressure is present. Common adverse reactions are dizziness and disorientation. It is recommended that patients relax, do not be overly anxious and nervous, under the guidance of the doctor to take the drug correctly on time and in accordance with the amount of medication, avoid reducing or stopping the drug, to prevent the condition from rebounding or worsening.