Just wanted to say that the statement you made, "As with most people with bipolar, he has three children from two failed marriages and is quite succesful at his job as CEO of large company=stress."
Using "most" is a huge generalization, I think "some" would be more fair to say.
This is a difficult time for you and/or your family, I feel for you and can relate somewhat, for I have a brother who has been through a lot, Bipolar was in "re-mission" for about 40yrs. until his pdoc suggest switching his mood stabilizer for health reasons, now my poor brother has been catapaulted back to where he was 40+ yrs ago, making his wife and his life a living hell.
With hope, now that he just demanded to be put back on his life long mood stabilizer and risk health condition, he'll be able to return to himself. Since last summer, when the change in med by his pdoc took place, my brother has been manic and now it has escalated to a horrible pitch.
I can't stress enough that not only does he seek professional care, but that you too seek some counseling or attend some sort of support group, many medical centers can direct you to some in your area.
His pdoc needs to be made aware of his illegal drug use, otherwise this situation will just go around and around, and not arrive at any positive direction, delaying potential treatment. Also, sometimes a person with Bipolar can be suffering with additional disorders, or may have been mis-diagnosed, this is a good reason to possibly get a 2nd opinion from another psychiatrist, if things just don't seem like they are meshing.
As you'll see replies to your postings from our great members, you may get some insight or at least some moral support during this difficult time.
So many situations like this are so individual, so what works for some may not work for others, but just want to encourage you to hang in there and seek professional help for yourself, it may be of great help to you while working through this.
Some members have made good suggestions, I believe in people educationg themselves about disorder(s) when afflicted or a friend/loved one is, is a great tool.
Above are some books listed, and on the internet a lot of helpful websites may be of help.
I'm wishing you lots of luck,strength and peace within.
Please take care,
DE
Stabilization can be a long, trying, process for the patient and loved ones, but is possible to accomplish.