Trust me when I say I had experience and still do experience phenibut and know all about it, I’ve take super high dosages and super low dosages. It’s not a drug you want to take daily since it builds up tolerance quick and can be addictive. Sure it may improve your speech slightly for being more relaxed but it’s not a reliable way to lean on for your speech. Piracetam is something non addictive, low tolerance, and no side effects that you can daily.