For constipation use of stool softener is recommended only when the non-pharmacologic measures fail. It is not safe to use stool softeners for long time. Let him try with these measures: i. drink lot of water ii. consume more green leafy vegetables and fruits iii. have regular exercise As the age is not given, I suggest to visit a surgeon and get Rectal Examination done to rule out rectal causes. For Dark Circles under Eyes: Dark circle under eyes is usually a sign of stress/ over work and /or lack of sleep. Suggest to have good sleep of at least 6 hours , take plenty of fluids and can use multivitamin preparations. Try to find out the allergens and avoid exposure to allergens as much as possible.