Many of the listed undesirable effects can be assigned to the anticholinergic properties of Fucon Solution for Injection 20mg/ml.
Immune system disorders: Not known*: anaphylactic shock including cases with fatal outcome, anaphylactic reactions, dyspnea, skin reactions (e.g. urticaria, rash, erythema, pruritus) and other hypersensitivity.
Eye disorders: Common: accommodation disorders.
Not known*: mydriasis, increased intraocular pressure.
Cardiac disorders: Common: tachycardia.
Vascular disorders: Common: dizziness.
Not known*: blood pressure decreased, flushing.
Gastrointestinal disorders: Common: dry mouth; Constipation.
Skin and subcutaneous tissue disorders: Not known*: dyshidrosis.
Renal and urinary disorders: Not known*: urinary retention.
Injection site pain, particularly after intramuscular use, occurs.
Hyoscine butylbromide, the active ingredient of Fucon Solution for Injection 20mg/ml, due to its chemical structure as a quaternary ammonium derivative, is not expected to enter the central nervous system. Hyoscine butylbromide does not readily pass the blood-brain barrier. However, it cannot totally be ruled out that under certain circumstance psychiatric disorders (e.g. confusion) may also occur after administration of Fucon Solution for Injection 20mg/ml.