Since your father recently had a heart attack and stent placement, please do not give an anti-diarrhoeal medicine on your own without checking with his cardiologist first.
Next Steps
For now, give ORS frequently in small amounts to prevent dehydration and continue a light diet. Also, do not stop his prescribed heart medicines, without speaking to his cardiologist, as these medicines are important after stent placement.
Please contact his treating doctor today, particularly if the diarrhoea is frequent. He may need review of his medications and hydration status.
Health Tips
Seek urgent care if there is blood/black stool, severe abdominal pain, repeated vomiting, very low urine output, marked weakness/dizziness, fainting, chest pain or breathlessness.