Collocations for side effect - noun

adverse, dangerous, harmful, nasty, negative, serious, severe, toxic, undesirable, unexpected, unfortunate, unpleasant, unwanted | beneficial | long-term | physical

cause, have, produce
The treatment has some unfortunate side effects.

suffer

~ from
The patient suffered severe side effects from the drug.

~ of
The drug has the beneficial side effect of lowering the patient''s blood pressure.

~ on
The medication can have adverse side effects on the patient.