👉 Stachydrine is a class of medications used to treat narcolepsy, an autoimmune disorder that causes excessive daytime sleepiness. It works by blocking the action of acetylcholine, which is the neurotransmitter responsible for the sensation of being sleepy. Stachydrine can be taken orally or injected into a vein, and it has been shown to improve symptoms in some people with narcolepsy. However, more research is needed to fully understand its efficacy and potential side effects.