Medication inhaler

A medication inhaler comprising an inhaler body, having a medication container chamber for receiving a medication container and an air passage coupling the medication container chamber with exterior air, and a mouthpiece axially engageable with the inhaler body. The mouthpiece has a mouthpiece chamber and a medication delivery needle communicating with the mouthpiece chamber. The needle extends toward the medication container chamber and has an opening for supplying exterior air and medication from an interior cavity of the medication container, accommodated within the medication container chamber, through the needle and to mouthpiece chamber. In the first position, the mouthpiece engages with the inhaler body with such that the needle is spaced from the medication container, and, in the second position, the needle axially traverses the medication container so that the opening in the needle communicates with the air passage and the interior cavity of the medication container to deliver the medication to the patient. The medication inhaler also includes an air bypass which bypasses the needle and supplies supplemental exterior air to the mouthpiece chamber to increase airflow through the medication inhaler.