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Is it dangerous and/or addictive to take Tylenol PM every night to help me sleep?

I've had lots of trouble sleeping over the last 5 years and have a routine of taking Tylenol PM or similar each night to help me sleep. What are the risks and possible long term effects? Is it possible to be addicted to the sleep aid? I am a 41 year old man and do not have any medical conditions to mention. Your answer is appreciated.
Many people have trouble falling asleep or staying asleep and find that taking medications can help them get better sleep at night. Tylenol PM is a relatively mild over-the-counter sleep aid that consists of tylenol (a pain reliever) and benadryl (an anti-histamine). Most of the sleep aid effect of Tylenol PM comes from the benadryl, as anti-histamines are known to make people sleepy. In fact, some of the early prescription allergy medications were not well-tolerated by patients because of this side effect. The manufacturers of Tylenol PM are simply taking advantage of this side effect in packaging the benadryl with the tylenol. In general, neither Tylenol nor benadryl or particularly dangerous or addictive medications. However, it is also good to keep in mind that even if your body is not 'addicted' to a sleeping pill in the same way that we would use the term addicted in the context of something like a narcotic medication, you may very well develop a dependence on the medication. For this reason, it may be a good idea to try limiting the Tylenol PM only for those days when you truly can't fall asleep. The medication itself won't hurt you, but it might keep you from developing more healthy sleep habits. Your primary care doctor can talk with you about good sleep hygiene habits, and this plus the Tylenol PM when you need it can help keep you sleeping through the night.
This answer is for general informational purposes only and is not a substitute for professional medical advice.
If you think you may have a medical emergency, call your doctor or (in the United States) 911 immediately. Always seek the advice of your doctor before starting or changing treatment. Medical professionals who provide responses to health-related questions are intended third party beneficiaries with certain rights under ZocDoc’s Terms of Service.
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