A reloadable auto injector for adrenaline injection, the auto injector comprising: a housing, a syringe with a needle, the syringe being movably positioned in the housing between a first position in which position the needle is accommodated inside the housing and a second position in which position the needle protrudes outside the housing, a plunger rod comprising a plunger rod stop and configured to be advanced in the syringe for delivering at least one dose of medicament, a plunger rod tube having a first deflectable locking member and a second deflectable locking member arranged at a distance from the first deflectable locking member along an advancement direction of the plunger rod, the two deflectable locking members (1108, 1110) configured to interact with the plunger rod stop to normally lock the plunger rod to the plunger rod tube, a syringe driver configured to apply a force to the syringe thereby moving the syringe from the first position to the second position, the syringe driver being further configured to advance the plunger rod tube with the plunger rod to the second position, a plunger rod driver being configured to apply a force to the plunger rod to advance the plunger rod in the syringe for delivering one dose of medicament upon unlocking of one of the two deflectable locking members (1108, 1110), a reload mechanism configured to retract the syringe from the second position to the first position and reload the syringe driver to allow a repeated activation of the syringe driver, wherein the reload mechanism is configured to unlock the first deflectable locking member upon a first movement of the syringe from the first position to the second position to thereby release the plunger rod from the plunger rod tube for delivering a first dose of medicament, and unlock the second deflectable locking member upon a further movement of the syringe from the first position to the second position to thereby release the plunger rod from the plunger rod tube for delivering a further dose of medicament. a housing, a syringe with a needle, the syringe being movably positioned in the housing between a first position in which position the needle is accommodated inside the housing and a second position in which position the needle protrudes outside the housing, a plunger rod comprising a plunger rod stop and configured to be advanced in the syringe for delivering at least one dose of medicament, a plunger rod tube having a first deflectable locking member and a second deflectable locking member arranged at a distance from the first deflectable locking member along an advancement direction of the plunger rod, the two deflectable locking members (1108, 1110) configured to interact with the plunger rod stop to normally lock the plunger rod to the plunger rod tube, a syringe driver configured to apply a force to the syringe thereby moving the syringe from the first position to the second position, the syringe driver being further configured to advance the plunger rod tube with the plunger rod to the second position, a plunger rod driver being configured to apply a force to the plunger rod to advance the plunger rod in the syringe for delivering one dose of medicament upon unlocking of one of the two deflectable locking members (1108, 1110), a reload mechanism configured to retract the syringe from the second position to the first position and reload the syringe driver to allow a repeated activation of the syringe driver, wherein the reload mechanism is configured to unlock the first deflectable locking member upon a first movement of the syringe from the first position to the second position to thereby release the plunger rod from the plunger rod tube for delivering a first dose of medicament, and unlock the second deflectable locking member upon a further movement of the syringe from the first position to the second position to thereby release the plunger rod from the plunger rod tube for delivering a further dose of medicament.