Although there is a real potential for addiction and dependency, after several years experience I did not find the addiction risk to be any more than that of alcohol. It’s something I have use for, but feel no cravings or need at all to ever take it more than 1 to 2 times per week.
As for dependence, if you abuse phenibut by taking it daily with continual large doses, you will become dependent on it and experience some withdrawals. Use it properly, and phenibut can be a very useful tool in your life to help you excel over common obstacles like anxiety & fear.
While some claim they can 'responsibly' take 3-4x/week, it's best to play on the safe side and keep it to once or twice per week (or on occasion).