INSYS Therapeutics, Inc. announced the results of a dose-finding pharmacokinetic (PK) study (INS015-18-124) of its epinephrine nasal spray. These results identified a dose that showed a PK profile similar to that of intramuscular injection of EpiPen® (0.3 mg) and Adrenalin® (0.5 mg), both of which are treatments for anaphylaxis, an acute, life-threatening allergic reaction. The dose-finding PK study, INS015-18-124, was a single-dose, open-label, randomized, four-treatment, four-way crossover study to assess the pharmacokinetics of two doses of epinephrine nasal spray and two reference products, EpiPen® (0.3 mg) and Adrenalin® (0.5 mg) in 49 healthy volunteers.