More frequently reported are diarrhoea, nausea with or without vomiting and abdominal pain. Less frequently reported are anorexia, pyrosis, flatulence and constipation. Gastrointestinal ulceration with or without haemorrage has also been reported.
Cases of auto-immune hemolytic anaemia have been associated with the continuous administration of Mefenamic acid for 12 months or longer, leukopenia, eosinophilia, pancytopenia, thrombocytopenic purpura, agranulocytosis and bone marrow hypoplasia.
Drowsiness, dizziness, nervousness, headache, blurred vision and insomnia.
Urticaria, rash, and facial oedema.
Papillary necrosis, renal failure, haematuria and dysuria.
Eye irritation, ear pain, perspiration and mild hepatic toxicity, dryness of mouth with difficulty in swallowing, thirst, dilatation of pupil with loss of accommodation and photophobia, increased intra ocular pressure, flushing of the skin, transient bradycardia followed by tachycardia with palpitations and arrhythmias, difficult micturition and constipation.