1) Yes and no. Started it for anxiety(mixed state really i think), but was hoping it would help for BP2, it did not
2) Not for the BP. I did help a ton with cognative ability. A bonus i wasnt expecting.
3) After one month of use, i purchased a five pack of five panel drug screens. Passed two within two weeks after that first 30 days

A few things to consider;
There are ZERO THC cbds out there, i have used three of them.
The rest may have the federally mandated maximum amount of THC, %.3
Those may make you fail a drug screen.
THC is bad for anyone with mental issues, especially BP.
I dont know if %.3 is enough to send you manic, but its a gamble
Also, CBD interfers with many medications, so be extra cautious

Hope that helps a little