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Prescribed phenibut for years. Am I dependent or addicted?

Posted by quietridge2291 on August 10, 2026

Original post

I've been prescribed phenibut for almost 3 years now for anxiety and sleep. Lately I've noticed I need more to get the same effect, and if I miss a day I get this awful rebound anxiety and can't sleep at all. I don't take extra beyond what's prescribed, but I'm scared to even miss one dose. Is this dependence, or is it something more like addiction? I don't really know where the line is anymore.

2 replies

  • sunsetharbor48Marked as the answer
    I went through almost the exact same thing with phenibut after about 2 years of daily use. What you're describing sounds like physical dependence, not addiction, since you're taking it as directed and not chasing a high. The tolerance and rebound anxiety when you miss a dose are classic signs your body adapted to it being there every day. What helped me was being honest with my doctor about exactly how it was affecting me, because phenibut withdrawal can get serious if it's stopped cold, up to and including seizures in people who've used it heavily for a long time. I ended up working with a doctor on a slow, supervised reduction instead of trying to figure it out myself, and that made a huge difference in how safe and manageable it felt.
  • graystonefield12
    I'm dealing with something similar, though mine was more compulsive, I started taking extra on hard days which pushed it past dependence into addiction territory for me. The distinction really does matter for how you get help. If you're strictly following the prescribed amount and just have physical withdrawal symptoms, a supervised taper with your prescriber is usually the first step. But if you notice yourself craving it, taking more than intended, or feeling like your day is organized around it, it's worth being honest about that too, since it might mean looking at a broader treatment plan and not just a dose reduction.

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