Cough and cold is usually caused by viruses. In some cases, such symptoms are early indication of allergy. In both cases antibiotics are useless and will produce side effects without any benefit. Chericof is the brand name of a combination product that contains dextromethorphan (a cough suppressant), chlorpheniramine (an antiallergic agent) and phenylpropanolamine (PPA - a decongestant). The last ingredient i.e. PPA has been banned in all western countries due to its serious side effects. Unfortunately it is still being sold in India even though safer alternatives such as Sinarest Syrup/Drops (that do not contain PPA) are available. Whenever your child suffers from cold and cough, you should try using good old, safe steam inhalation. If necessary Sinarest Vapcaps can be mixed in water to open blocked nose. In due course your child will get over the problem. There is no need for aggressive treatment.