caffeine may need to curb your consumption .
keep in mind that the actual caffeine content in beverages varies widely , especially among energy drinks .
caffeine : how much is too much ?
in the ongoing battle for the “ world ’s strongest coffee ” crown , the unfortunately named death wish coffee company appeared to be the most legitimate previous king .
although caffeine use may be safe for adults , it 's not a good idea for children .
for the record , both brands offer up more of the mild upper per 12 - ounce serving than the 400 milligrams medical experts recommend you consume in our general interest e - newsletter keeps you up to date on a wide variety of health topics .
however , according to grub street , black insomnia says that after an independent analysis of its beans and its competitors ’ beans by a lab in switzerland , black insomnia ’s coffee was the “ clear winner .
” caffeine informer says black insomnia has 702 milligrams of caffeine per 12 - ounce cup ; meanwhile , death wish has 660 milligrams .
how much is too much ?