Anecdotally, as someone with moderate bipolar depression and severe anxiety, a 1:1 THC/CBD tincture has been a miracle cure for me. I’ve spent my whole life going through every SSRI and mood stabilizer in the book, and the side effects have always been worse than just going unmedicated. This is the only thing that has ever truly helped me. Cannabinoids seem to be highly synergistic, where THC can ease the depression but increase anxiety, while CBD decreases the anxiety to be manageable. Either one alone is far less effective.