i used to stutter then I read a saying a saying of prophet mohammad pbuh that doing miswak clears voice then I started doing miswak 7-8 times a day after waking ,before bed, before every prayer and someone suggested me its a FUNGAL INFECTION in throat called candidiasis that blocks air while speaking so i started to take FLUCONAZOLE tablet coz it cures that infection and fortunately after few weeks my stutter was completely gone.I suggest everyone to start doing miswak and take fluconazole because it cures stutter.