By those numbers the 70 gram tube contains approximately 5-6 grams of caffeine? LD50 level for caffeine is estimated at 200mg/kg of body weight [2], so the tube could kill a 25kg person? I hope that the fresh minty taste isn't too attractive to children, as the lethal dose to a small child looks to be substantially less than one tube.
By comparison, about two (100g?) tubes of fluoridated toothpaste could kill a 10kg (2yr old) child [2], so a child is unlikely to die from scoffing an open tube of toothpaste that they find in the house.
Perhaps you should look at either the caffeine concentration or tube size, to ensure that an incidental poisoning can't occur due to a single open tube.
By comparison, about two (100g?) tubes of fluoridated toothpaste could kill a 10kg (2yr old) child [2], so a child is unlikely to die from scoffing an open tube of toothpaste that they find in the house.
Perhaps you should look at either the caffeine concentration or tube size, to ensure that an incidental poisoning can't occur due to a single open tube.
[1] https://en.wikipedia.org/wiki/Caffeine#Overdose [2] http://health.howstuffworks.com/wellness/oral-care/kids/what...