GI irritation, epigastric pain, stomach cramping, constipation, nausea, vomiting, diarrhoea, dark stools, heart burn, discoloured urine, teeth staining. IM: pain at inj site, abdominal pain at lower quadrant and local inflammation with inguinal lymphadenopathy. IV: Joint and muscle pain, bronchospasm, hypotension, tachycardia, flushing, sweating, dizziness.
Potentially Fatal: Parenteral: Anaphylactoid reactions, circulatory collapse.