Read the side effects of Phenylbutazone as described in the medical literature. In case of any doubt consult your doctor or pharmacist.
Gastrointestinal -
Nausea, vomiting and indigestion.
Central Nervous System -
Headache, dizziness and drowsiness.
Metabolic -
Sudden weight gain, swelling of feet and ankles and difficulty in breathing.
Miscellaneous -
Bloody or black stools, chills, fever, sore throat, yellowing of the eyes and skin, unusual bleeding or bruising, difficult urination, skin rash, mouth sores and unusual tiredness.
Other Precautions : * Avoid excess dosage.