Careful about relying on benadryl (1st generation antihistamines) nightly long term. They will lead to dependence, and tolerance as they eventually stop helping because your histamine receptors adjust to their presence. Also, these drugs are on the BBERS list of drugs that negatively affect cognition. Long term, they mess up your ability to think and remember. They are very bad for brain health. Yes, I know insomnia is bad for bran health too, it's hard to know what to do. But you can learn to address insomnia without drugs. Best to learn about some NON DRUG approaches to your insomnia. Best ~