"The oral LD50 (lethal dose in 50% of the population) of diazepam is 720 mg/kg in mice and 1240 mg/kg in rats. D. J. Greenblatt and colleagues reported in 1978 on two patients who had taken 500 and 2000 mg of diazepam, respectively, went into moderately deep comas, and were discharged within 48 hours without having experienced important complications in spite of having high concentrations of diazepam and its metabolites—desmethyldiazepam, oxazepam, and temazepam—according to samples taken in the hospital and as follow-up.
Overdoses of diazepam with alcohol, opiates and/or other depressants may be fatal."
This isn't directly about Klonopin but is about another benzodiazepine. Sounds like it would be very very hard to OD on any benzo.
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