Confidence votes 76. It depends on the temperature of the refrigerator and how well the pack is resealed. Three to ten days depending on the environment.
Pediatric Patients: Klonopin is administered orally. In order to minimize drowsiness, the initial dose for infants and children (up to 10 years of age or 30 kg of body weight) should be between 0.01 and 0.03 mg/kg/day but not to exceed 0.05 mg/kg/day given in two or three divided doses.
Re: How much clonazepam can I really take? As has already been pointed out, you risk feeling like crap if you run out of pills before you can refill due to taking more than prescribed. Now to answer your question: Klonopin is approved for treatment of panic disorder up to 4 mg a day, and up to 20 mg a day for epilepsy. So, the dose can go sky high without causing harm (other than such high doses would put most folks to sleep till they got used to it).