Write the following on a piece of paper:
بسم الله الرحمن الرحيم
قلنا ينار كوني بردا و سلاما و سلاما و سلاما
Recite Surah Fatihah seven times, Ayatul kursi once, Muawwazatain once and blow on the piece of paper
Thereafter soak it in a glass of water and let the patient drink this water.
Repeat the above morning and evening for 3 days.
InshaAllah one will find alot of benefit.