When you say 'tablet doses', did you mean you swallowed them? Nicotine isn't really absorbed well that way. That's also why Gwern's self experiment didn't rea

When you say 'tablet doses', did you mean you swallowed them? Nicotine isn't really absorbed well that way. That's also why Gwern's self experiment didn't really work. In any case, yes, stimulants can cause anxiety in people. (Weirdly, they can also help with anxiety. The brain is weird.)