According to the World Health Organization (WHO), undesirable effects are classified according to their frequency of development as follows: very often (≥1/10), often (from ≥ 1/100 to <1/10), infrequently (from ≥1 / 1000 to <1/100), rarely (from ≥1 / 10000 to <1/1000), very rarely (<1/10000); frequency is unknown - according to available data, it was not possible to establish the frequency of occurrence.
From the immune system: rarely: hypersensitivity reactions. frequency unknown: anaphylactic reactions, including anaphylactic shock, angioedema and itching.
From the central nervous system: rarely: headache, dizziness, increased nervous excitability, sleep disturbance, drowsiness, tremor, convulsions.
From the side of the cardiovascular system: rarely: heart palpitations, collapse.
From the respiratory system of the chest and mediastinum: rarely: bronchospasm.
From the gastrointestinal tract OKKT): rarely: nausea, vomiting, diarrhea, exacerbation of peptic ulcer of the stomach and duodenum.
From the side of the kidneys and the urinary system:rarely: it is possible to stain the urine pink.
From the skin and subcutaneous tissues: rarely: a rash, hives.
frequency unknown: severe skin reactions (including erythema multiforme, Stevens-Johnson syndrome, toxic epidermal necrolysis, and acute generalized exanthematous pustules associated with ambroxol use (ambroxol is a metabolite of bromhexine).