Hi, I started to put a bit of Cayenne pepper, along with some lemon juice into my morning tea, as an immune booster, but, I must say, I have found that I have been in an extremely energetic and jovial mood. I had not noticed this until yesterday, my 3rd day doing this regimen---just thought I would share.
I used cayenne this past month as a remedy for tachycardia.However, I thought the same thing as you, that my mood was better. I put a little bit in my hot herbal tea such as chamomile or hibiscus.