The LD50 for klonopin is not known. There are no equivalent pharmacokinetics for animal models that reflect an LD anything for humans and there certainly are no LD studies involving human subjects! Also, I am unaware of any reported fatal overdoses from clonazpam (Klonopin). Doses of up to 60 mg have not been fatal (although such high doses do produce serious drowsiness and ataxia. Of course if you are a child, a dose of 15-32 mg will put you in a coma but of reported cases like this, none were fatal. Normal clinical doses are around 5-20 mg per day. The drug has a pretty long half life meaning multiple doses will add up because the initial doses is not quickly metabolized.
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