Mixing and storage

Add 5 mL bacteriostatic water to a 5 mg vial (or 10 mL to a 10 mg vial) for 1 mg per mL. Draw it into a clean nasal spray bottle; a 0.1 mL spray is 100 mcg, so 3 sprays is 300 mcg. Keep the powder cool and dark. Once mixed, keep it in the fridge and use it within 28 days.