Does magnesium glycinate and B1 or B6 actually impoverished speech?

Does magnesium glycinate and B1 or B6 actually impoverished speech? My stutter is in the form of blocks and I hesitate to get my words out. I’m currently taking Prozac and buspirone for anxiety issues. Im thinking that my stutter is getting worst because of stress and anxiety in my life. I’m considering taking magnesium glycinate and B1 or B6 I think that’s what helps stuttering.