When will you start to feel better after only taking one dose mirtazapine and stop?

It's unlikely to feel significant effects after just one dose of mirtazapine, as antidepressants typically require several weeks to build up in the system and show noticeable benefits. Some individuals might experience initial side effects or minor improvements within the first few days, but full therapeutic effects usually take 2 to 4 weeks or longer. If you've taken only one dose and stopped, it's important to consult with a healthcare professional for guidance tailored to your situation.