My Husband Had Gone Under Angioplasty. He Is 51.He Is

My husband had gone under angioplasty. He is 51.He is Diabetic. Two stents are inserted for 90% blockages in two different arteries. One more 40% blockage is found . But Dr says it will be cured by medicine. Angioplasty took place on 3 march. he has severe constipation. He took Dulphalac .also we give him leafy vegetables salads.Is there any other medicine.

What is the life of stent.? He took nicotine orally. what precautions should we take now.Can he take alcohol.He is not addicted but once in a month he use to take.