I have a problem with stammering. I heard that the cure for stammering is in hadith .please tell me the ingredients of the medcines so thatI may make the medicine.

Praise be to Allah, the Lord of the Worlds; and may His blessings and peace be upon our Prophet Muhammad and upon all his Family and Companions.

We don't know any Hadith in this subject. However, using Miswak is beneficial in this concern.
Imam Ibn al-Qayyim wrote in his book 'al-Tib al-Nabawi' (prophetic medicine) using Miswak heals stomach, clears voice, helps in digetion, removes the problems of sound, activates a person for study supplication, prayers, drives away drowsiness and, moreover, it pleases Allah.
Allah knows best.