NEW SHAMA Sharbat Khaksi. It is Unani herbal drug composition in the form of syrup.It is useful in measles & chicken pox. Measles is a viral infection that’s serious for small children but is easily preventable by a vaccine and medicines, chicken pox a highly contagious viral infection, which causes an itchy, blister like rash on the skin.A highly contagious viral infection, which causes an itchy, blister like rash on the skin.