I have been taking TP for around 13 years now. I started with taking 2 every night for years and then slowly got down to taking 1 and 2 if I knew I had a tough day ahead and really need the sleep. I have talking to several doctors and each said you can not get addicted to it. Is is good to do every night? Not really, if I skip it one night for something like driving all night to florida then I break out in a rash the next day from the lack of histamine in my system. I have now started taking melatonin and one PM and find I sleep really well even in an unfamiliar bed/house. Will soon try just the melatonin.