The frequency of adverse reactions is presented in accordance with the classification of the Medical Dictionary of Regulatory Activities (MedDRA): very often (≥ 10%); often (≥ 1% and <10%); infrequently (≥ 0.1% and <1%); rarely (≥ 0.01% and <0.1%); very rarely (<0.01%); the frequency is unknown (it is not possible to determine the frequency of occurrence according to the available data).
Undesirable reactions against tamsulosin monotherapy
Disturbances from the nervous system
Often: dizziness.
Infrequently: headache.
Rarely: fainting.
Disturbances on the part of the organ of sight
Frequency unknown: blurred vision, visual impairment.
Heart Disease
Infrequently: sensation of "palpitation".
Vascular disorders
Infrequently: orthostatic hypotension.
Disturbances from the respiratory system of the chest and mediastinal organs Infrequently: rhinitis.
Frequency unknown: nose bleed.
Disorders from the gastrointestinal tract
Infrequently: nausea, vomiting, constipation, or diarrhea.
Frequency unknown: dry mouth.
Disturbances from the skin and subcutaneous tissues
Infrequently: skin rash, itching, hives.
Rarely: angioedema.
Rarely: Stevens-Johnson syndrome.
Frequency unknown: erythema multiforme, exfoliative dermatitis.
Violations of the genitals and mammary gland
Rarely: priapism.
Frequency unknown: ejaculation disorders, including retrograde ejaculation, lack of ejaculation.
General disorders and disorders at the site of administration
Infrequently: asthenic syndrome.
In the course of post-marketing application of tamsulosin, in addition to the listed undesirable reactions, atrial fibrillation, arrhythmia, tachycardia and dyspnea (frequency of occurrence is unknown) were noted.
In the post-registration period, cases of intraoperative irrosis syndrome (a variant of the "narrow pupil" syndrome) were also revealed,which developed during surgical operations for cataracts and was associated with the administration of tamsulosin (see section "Special instructions").
Undesirable reactions against monotherapy with finasteride
Immune system disorders
Frequency unknown: hypersensitivity reactions, including swelling of the lips, tongue, pharynx and face.
Disorders of the psyche
Often: decreased libido.
Frequency unknown: depression.
Heart Disease
Frequency unknown: sensation of "palpitation".
Disturbances from the liver and bile ducts
Frequency unknown: increased activity of "liver" enzymes.
Disturbances from the skin and subcutaneous tissues
Infrequently: a rash.
Frequency unknown: urticaria, itching.
Violations of the genitals and mammary glands
Often: erectile disfunction.
Infrequently: violation of ejaculation, increase and soreness of the mammary glands.
Frequency unknown: soreness of the testicles, sexual dysfunction (impaired ejaculation and erectile dysfunction), which can continue after the end of treatment. Male infertility and / or decreased quality of seminal fluid,which is restored after the cessation of treatment.
Impact on the results of laboratory and instrumental research
In patients receiving finasteride, a decrease in the concentration of prostate-specific antigen (PSA) in the blood plasma is possible. Often there was a decrease in ejaculate volume.
In addition, in the course of clinical trials and post-registration use, cases of breast cancer in men have been reported (see section "Special instructions").
Undesirable reactions against combined treatment
In patients receiving combined treatment (finasteride and α1-adrenoblocker), the same undesirable reactions appear with the same frequency as with monotherapy with finasteride and α1-adrenoblocker. The results obtained showed that erectile dysfunction and ejaculation disorder appeared more often with combined treatment, whereas progression of the disease (including increased manifestation of BPH symptoms or the need for surgical treatment) occurred more often with monotherapy.