Verse # 82 of Surah Isra is very effective in curing ailments such as panic attacks, dysentery, fever, headaches etc. The method is to read this verse 100 times after every namaz. After this the sick person should blow over his or her body.
If a person makes a routine of doing this amal always then it may help in warding off diseases as well.
surah isra verse number 82
وَنُنَزِّلُ مِنَ الْقُرْآنِ مَا هُوَ شِفَاءٌ وَرَحْمَةٌ لِّلْمُؤْمِنِينَ ۙ وَلَا يَزِيدُ الظَّالِمِينَ إِلَّا خَسَارًا