The present invention relates to a handheld mechanical injection device bywhich set doses of a liquid medicament can be injected from a medicalreservoir. The medicament is expelled through an injection needle by releaseof a power reservoir in the device, the power reservoir being fully orpartially released by actuation of a user operable release member beingpositioned at or near an upper end of the injection device, the upper endbeing that end of the injection device which is opposite the injection needle.