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0. Phenobarbital is a barbiturate and will cause a positive test result for barbiturates. Phenytoin (Dilantin) is not a barbiturate; however a metabolite, p-hydroxyphenytoin has minimal cross reactivity on the initial screening test. There is no interfe.... Phenobarbital is a barbiturate and will cause a positive test result for barbiturates. Phenytoin (Dilantin) is not a barbiturate; however a metabolite, p-hydroxyphenytoin has minimal cross reactivity on the initial screening test. There is no interfe...
The barbiturate, Sodium Pentobarbital is the most widely used drug, and is the drug of choice for euthanizing horses. Barbiturates depress the central nervous system, with unconsciousness progressing to depression of breathing and finally cardiac arrest. The advantage of barbiturates is speed of action.he mass killing of animals by use of the captive bolt, guns, electrocution, gas and other methods does not meet the criteria of a good death. A research scientist will refer to a barbiturate overdose for a horse as euthanasia to horse owners.