<s>[INST] My son is 9 yrs old , he has cough since 2 weeks, now though the frequency has decreased to 2-3 bouts of cough a day  yet there is phlegm formation inside his body. I hav recofast plus tabs n zifi 200 tabs , can I giv thm to him for 3 days for cure, if yes thn what shall be d dosage . Thank you [/INST] Hi,You can give these medicine for 3-5 days for having this problem.Give tablet Rcofast half tablet 3 times a day.Give Zifi 200 mg once n a day for 3-5 days.If there is no improvement after few days then consult your doctor and get investigated.Avoid giving junk food and cold drinks.Ok and take care. </s>