Injection syringe comprising a first and a second reservoir, which first reservoir has a first open end through which the second reservoir can be mounted sliding in the first reservoir, which first reservoir has a second end on which an injection needle can be arranged, which second reservoir comprises a base surface which is fitted with an outlet, wherein at the outlet is arranged a protrusion which extends from the base surface in the direction of the second end, which protrusion is arranged breakably on the base surface of the second reservoir.
