What ingredients make up lidocaine?
“Lidocaine” is the name of an active medicine ingredient. What you see as the product’s ingredients depends on the dosage form (cream, gel, ointment, patch, spray, injection, or drops). In all cases, the formulation contains:
- Lidocaine (the active drug ingredient)
- Other inactive ingredients (the “excipients”) that help it work the right way, spread on skin, dissolve, stay stable, or deliver in a specific way
What inactive ingredients are commonly in lidocaine creams, gels, and ointments?
For many over-the-counter lidocaine topicals, inactive ingredients often include some combination of the following (the exact mix varies by brand and concentration):
- Occlusive or skin-feel bases (such as petroleum jelly or similar ointment bases)
- Gelling or thickening agents (to keep it from running off)
- Solvents or moisturizers (to help lidocaine dissolve and spread)
- Preservatives and stabilizers (to prevent spoilage or chemical breakdown)
- pH adjusters and surfactants (to improve comfort, stability, and absorption)
What ingredients are in lidocaine patches?
Lidocaine patches use different excipients than creams/gel because they are designed to hold the drug against skin for hours. Typical non-drug components can include:
- A backing layer (material the patch sits on)
- Adhesive layer(s) that keep the patch in place
- A matrix or drug reservoir where lidocaine is distributed
- Release/skin-protecting components and stabilizers
What ingredients are in lidocaine sprays or solutions?
Topical sprays and solutions often include:
- Lidocaine as the active ingredient
- Solvents (to dissolve lidocaine so it can be sprayed)
- Propellants (for aerosol sprays, if applicable)
- Flavoring/fragrance (for some consumer products)
- Preservatives/stabilizers (to keep the solution usable)
What’s in injectable lidocaine?
Injectable lidocaine products contain lidocaine plus sterile formulation ingredients such as:
- Sterile water or other diluents
- Buffering agents to control pH
- Preservatives (only in some multi-dose or specific presentations)
- Stabilizers as needed for shelf life and safety
How to check the exact ingredients for your specific lidocaine product
To see the precise ingredient list for your product, check the “Inactive ingredients” section on the package label or the prescribing information. The active ingredient is always lidocaine, but the inactive ingredients differ widely between brands and forms.
If you tell me the exact product name (or share the label text and whether it’s cream/gel/patch/spray/injection), I can help identify the specific ingredient list for that version.