How much is a dosage in an epi-pen?

EpiPen (epinephrine) above 54# Although the pdr states that Epipen (epinephrine) junior should be given to children >60 pounds, many allergists choose a lower minimal weight. A common cross-over is Epipen (epinephrine) junior for children up to 54 pounds and Epipen (epinephrine) for everyone heavier.
0.3 mg epinephrine. Each Epipen (epinephrine) autoinjector delivers 0.3 mg of a 1:1000 Epinephrine (adrenaline) solution. An Epipen (epinephrine) jr delivers half (0.15 mg) that amount & are primarily used in children. These self-injection devices contain about 2 cc of clear liquid inside & about 80% of that remains after use. In most cases, 1 dose may be enough but if a hospital is not close by or the reaction worsens, a 2nd dose may be needed.
2 Sizes. There are two sizes. The Epipen (epinephrine) jr. Is 0.15mg and is intended for patients up to 60 pounds. The Epipen (epinephrine) is 0.3mg and is for those over 60 pounds.
0.3mg. And there is no contraindication to using an epi-pen during a severe hypersensitivity reaction.