Srinagar, Oct. 9 -- One of the most common and easily accessible medications on your pharmacy shelf is cough syrup. Cough syrups can be used for relief of cough, and cold symptoms (and most would consider them to be safe use). However, one may not consider that an overdose of cough syrup could be dangerous or, an overdose can be fatal. Most cough syrup contains other active ingredients such as dextromethorphan, codeine, chlorpheniramine, and preps based off of anti-histamine. These active ingredients can work in the body in different ways to mediate/relieve cough, however, when taken at larger than recommended doses, these agents, depending on dose and combination with other drug or alcohol, can cause harmful effects in relation to the br...