Is there a decongestant for nose & cough that i can give my 11 year old son? his weight is 105 pounds and he takes 50mg of zoloft & 2mg of abilify (aripiprazole).

Colds: You can trial any OTC tussin DM product you like to see if they will help his symptoms - it is really variable on how much they help. You can also use warm fluids with honey to help soothe his cough. Cough is a protective function so suppressing it aggressively is counter-productive. Saline nasal spray to aid in thinning the secretions in his nose and sinuses is also worth trying.