Any remedies for a "bronchitis-like" cough that won't keep this gal up all night...I'm exhausted! :(

I have been sick since last tuesday with bronchitis and it is wreaking havoc with my Asthma and COPD. I am currently taking antibiotics, but the constant cough/ticklish throat is keeping me up at night. I can't take most OTC remedies as they keep me up at night as well. HEEELLLP! :)