Frequency: very often - more than 1/10, often - more than 1/100 and less than 1/10, infrequently - more than 1/1000 and less than 1/100, rarely - more than 1/10000 and less than 1/1000, very rarely - less than 1/10000, including single messages.
From the central nervous system: very often - dizziness, drowsiness, increased fatigue, slowing the speed of mental and motor reactions; often - headache, nervousness, depression, sleep disturbance; infrequently - paresthesia, rarely - asthenia, impaired perception, hallucinations, bright or "nightmarish" dreams; frequency is unknown - confusion.
From the sense organs: rarely - reduced tearing; frequency is unknown - the detriment of accommodation.
From the side of the cardiovascular system: in rare cases at the beginning of treatment, a paradoxical increase in blood pressure (short-term) is possible; very often - orthostatic hypotension, infrequently - sinus bradycardia,Raynaud's syndrome; rarely - atrioventricular block; frequency unknown - bradyarrhythmia.
From the respiratory system: rarely - dryness of the nasal mucosa.
From the digestive system: very often - dryness of the oral mucosa; often - constipation, decreased appetite, nausea, pain in the salivary glands, decreased gastric secretion, vomiting; rarely pseudo-obstruction of the large intestine; frequency is unknown-hepatitis.
From the skin: infrequently - skin itching, rash (including urticaria); rarely, alopecia.
From the side of the reproductive system: often - erectile dysfunction; frequency is unknown - decreased libido; rarely gynecomastia.
From the laboratory indicators: rarely - hyperglycemia; frequency unknown - change in functional liver samples.
Other: the frequency is unknown - the phenomenon of Raynaud, the delay of sodium and water, manifested by swelling of the feet and ankles, infrequent - nasal congestion; with a sudden abolition - the syndrome of "cancellation", "hemiton crisis."
If the side effects indicated in the manual are aggravated, or if you notice any other side effects not listed in the instructions, tell your doctor.