Of course they do, those hormones are the backbone of women’s health, with direct effects on serotonin, dopamine, amygdala reactivity and prefrontal cortex which are all heavily involved in the stutterer brain. My improvement is noticeable for me when it comes to my ability to get words out , overall I would say 25% improvement. My stutter certainly doesn’t disappear but I know for a fact that these meds help me enormously after having been off of them for a year