i put the 1/8 tsp in my mouth and left it there for a minute and swallowed i think that you can only get so much heat from something before there is nolonger a increase in heat from it so i think i can do a 1/4 w/o a problem
on a second note i just did 1/4 tsp and i did not feel much heat like the 1/8 so i guess i was right and i am getting used to it real quick