First, if you are passing stools one time a day, it's not constipation. And constipation of such long duration needs evaluation, consult gastroenterologist.
You can try MOVICOL sachet
2 sachet with glass of water, morning and evening for 1 week, then
1 sachet morning and evening for next 1 week.
Health Tips
please note that treatment given based on limited information given by you. Be cautious if your are taking other medicines for same or other diseases, or you are allergic to medicines or suffering from any other disease)