Thinker,
Hypomania and/or mania are ok and fun, as long as you don't do things that end up harming you or others. If that's the case, then enjoy! However, as pointed out earlier, they are always followed by a let-down, and that can (not always, but most of the time) be followed by depression. Are you on meds?

Also: Every over the counter sleep agent, with the exception of straight Melatonin, have the same sleep-inducing ingredient: antihistamine. There are many different names and many different kinds but they are all essentially the same and will lose their effectiveness if you use them on consecutive nights for a long period. Eventually, they will have the opposite effect and wake you up more. The ingredient you named is an antihistamine. Ambien or Ambien CR is a prescription sleep agent that has a unique ingredient that is not like those OTC products, must be prescribed by a doctor, and can be addictive. It is not an opiate, but does have addictive characteristics.

I, too, am concerned about you. I recognize where you are and I did what you are doing for 20 years and would inevitably have a bad crash that required hospitalization. Not all of them did but some did. Please be careful, we don't want anything happening to you.