Biltricide Side Effects

Like all medicines, this medicine can cause side effects, although not everybody gets them.
The side effects are ranked by frequency, using the following convention: Very common: more than 1 in 10 people treated.
Common: 1 to 10 in 100 people treated.
Uncommon: 1 to 10 in 1,000 people treated.
Rare: 1 to 10 in 10,000 people treated.
Very rare: less than 1 in 10,000 people treated.
Not known: cannot be estimated from the available data.
The side effects vary depending on the dose and duration of Biltricide treatment. They also depend on the species of parasite, the extent of the infection, the duration of the infection, and the location of the parasites in the body.
Hypersensitivity reactions: Very rare: Allergic reactions, increase in certain white blood cells (eosinophilia).
Nervous system disorders: Very common: Headache, dizziness.
Common: Vertigo, fatigue and delayed reactions with increased drowsiness.
Very rare: Seizures.
Cardiovascular disorders: Very rare: Heart rhythm disorders.
Gastrointestinal disorders: Very common: Stomach and abdominal pain, nausea, vomiting.
Common: Loss of appetite, diarrhea (very rarely bloody diarrhoea).
Skin disorders: Very common: Hives.
Common: Rash.
Very rare: Itching.
Musculoskeletal and connective tissue disorders: Common: Muscle pain.
General disorders: Very common: Fatigue.
Common: General malaise, fever.
Often it is not clear whether the symptoms have been caused directly by praziquantel (I, direct relationship), should be viewed as a physical reaction to the destruction of the parasites by praziquantel (II, indirect relationship), or are simply characteristic (symptoms caused by the parasitic infection) of the parasitic infection (III, no relationship). It can be difficult to differentiate conclusively between options I, II and III.
Reporting of side effects: If getting any side effects, talk to the doctor or pharmacist. This includes any possible side effects not listed in this monograph.