The number of injections in one pack of an injection can vary widely depending on the medication and manufacturer. Typically, injection packs may contain anywhere from a single dose vial or ampoule to multiple doses, such as 5 or 10 vials/ampoules per pack.

If you have a specific injection in mind, please provide its name or type, so I can give you more precise information about the packaging.

In general:

• Single-dose vials or ampoules usually come one per pack.
• Multi-dose vials may contain several doses but are usually counted as one vial.
• Some injections come in packs of multiple pre-filled syringes.

Always check the packaging or consult your pharmacist or doctor for exact details about the injection you have.