I haven't tried liquid THC. I was under the impression that it would be in any form.
I discussed with my psychiatrist at the time of using Cannabis as treatment for my Bipolar symptoms. She then signed a letter for me to get my medical marijuana card, and told me to smoke every day for a month and report back to her how I was doing. I also had to give her articles from non pro-cannabis publications on how cannabis would lower Bipolar symptoms. The experiment lasted 3 weeks before I had to stop.