Can my height increase with the help of exercises or by any aurvedic medication which doesn't have any side effects?

May be too late but: I am sorry to tell you that most men stop growing around age 18- but occasionally some will grow until age 21 or so. Taking measures to increase your production of growth hormone might help, but if your growth plates have closed (like most 18 yo's) then you've reached your max. See "http://www.Thebodywellusa.Com/blog/dr-mike-carraghers-top-10-ways-to-increase-your-human-growth-hormone-hgh-levels".