Thanks to USDA regulations, decaf coffee cannot contain more than 0.1% caffeine, so you don't have to worry about there being massive amounts of variation between specific products.

68 to 90 milligrams per pound (150–200 mg/kg) can be lethal, but it would require a lot of powder and supplements However, also keep in mind that your actual caffeine limit may not fit the ...

Avoid consuming high-caffeine products in front of children, as they may think it's safe for them. Keep high-caffeine products locked up and stored away where children can't reach them, just like ...