Hi! My Name Is Sue. I Am Currently Taking Effexor,

Hi! My name is Sue. I am currently taking Effexor, Lamictal, Lipitor , synthroid, Advair. Also have asthma. 1.i am taking Delsym 12 hr. Cough syrup for cough resulting from chronic nasal drainage and sinus congestion because of allergies. Have been using olopatadine HCl for drainage but has not completely stopped a progression into a cough. Am concerned about drug interactions with Desym and medications. 2. Am wondering how to tease out my heart palpitations caused by these meds. Cardiologist gave me a clean bill of health. Thanks for help. Sue