The invention relates to an injection needle for injecting a pharmaceutical product into a human or animal body. The needle comprises a tubular body with an end for penetrating into a human or animal body, and having a main bevel and a secondary bevel forming a tip of the needle. The secondary bevel is positioned opposite the main bevel and forms, with the main bevel, a single cutting edge oblique to the longitudinal axis of the tubular body. The cutting edge extends on both sides of a middle plane of the main bevel that passes through the longitudinal axis of the tubular body.