Amitriptyline- A tricyclic antidepressant used as being a sleep help sometimes, I discover this does enhance the sedation from codeine and appears to work Okay as an antihistamine.Chlorpheniramine maleate/'Demazin'- Not too long ago saw this accessible OTC in 'Demazin', I think it is 1.5mg chlorpheniramine and 5mg phenylephrine for every 5mL. I am