Prefilled Syringe Contract Manufacturing
Ready-to-use prefilled syringes filled under your brand by sterile manufacturing sites in India.
In a prefilled syringe, the container is part of the product
A prefilled syringe delivers an exact dose ready to inject, with less risk of dosing errors and less overfill than a vial. It is common for anticoagulants such as enoxaparin, for vaccines, for many biologics and for emergency medicines.
The syringe itself affects the product. The barrel can be glass or plastic, the needle staked or attached with a Luer lock, and the inside is coated with silicone so the plunger glides. Silicone and other materials can interact with the drug, especially proteins, so the syringe system has to be chosen and tested with the product, not added afterwards.
Syringes are usually filled from sterile, ready-to-fill tubs on dedicated lines. We shortlist sites that already fill syringes of your type and volume for your markets.
Tell us this to get a quote
- Molecule(s), dose and fill volume
- Syringe type: glass or plastic, staked needle or Luer lock
- Needle shield, plunger rod and any safety device
- Target market(s)
- Annual volume and first-order quantity
- Storage: room temperature or refrigerated
- Your own formula and dossier, or the manufacturer's
What to check in a prefilled syringe manufacturer
Syringe system and suppliers
Which barrel, plunger stopper and needle shield are used, who supplies them, and what compatibility data exist with your product.
Siliconisation and particles
How the barrel is siliconised, glide force across shelf life, and particle levels. Proteins are especially sensitive to silicone and other residues.
Container closure integrity
Integrity testing of the plunger seal and needle shield over shelf life, and how plungers are placed without trapping air.
Device rules
A prefilled syringe can be regulated as a combination product. In the US and EU the device part has its own requirements; check what your market expects.
Inspection
100% inspection for particles, cosmetic defects and fill volume, by automated or manual methods with defined defect limits.
Stability and cold chain
Stability in the final syringe, including any refrigerated storage, and a plan for shipping without freezing or overheating.
Products commonly supplied in prefilled syringes
| Product type | Examples | Watch for |
|---|---|---|
| Anticoagulants | Enoxaparin, fondaparinux, heparin | Dose range, safety device; generic ('sameness') or biosimilar route depending on market |
| Biologics | Pegfilgrastim, adalimumab | Protein-silicone interaction, cold chain, specialised sites |
| Vaccines | Many single-dose vaccines | Cold chain, regulatory approval of the presentation |
| Emergency medicines | Adrenaline (epinephrine), atropine | Fast, error-free use, clear labelling |
Moving a product from vials to syringes is a change to the product. It needs compatibility and stability data and a variation, or in the US a prior-approval supplement, in each market.
How it works with PharmaTradz
You send the product, form, market and volume.
Two or three plants that already make that type of product, with their approvals and country of manufacture. Names under a confidential disclosure agreement when the requirement is firm.
Samples of an existing product, or filling trials and stability batches in the chosen syringe for a new one.
Your brand, artwork and pack, and the dossier your market needs.
Production and release with a batch-wise Certificate of Analysis, sterility and endotoxin results. Cold-chain shipping where needed.
Scheduled batches with the same site, materials and documents.
Problems we see most often
Syringe component changes
A supplier changes the barrel, stopper or silicone, and glide force or particles change. Lock the components, and require change notification, in the quality agreement.
Stiff or stuck plungers
Glide force rises over shelf life and syringes become hard to use. Ask for glide-force data at the end of shelf life.
Frozen or overheated shipments
Refrigerated syringes are damaged by freezing as well as heat. Agree packaging, monitoring and responsibilities before shipping.
Have a prefilled syringe product in mind?
Send the molecule, dose, syringe type, market and annual volume. We will tell you which sites fit and what data they hold.
Send your requirement Talk to our teamOther contract manufacturing
For refrigerated products see our cold-chain logistics service. Building your own brand across several products? See white label and third-party manufacturing, or the CDMO and contract manufacturing guide hub.
