
Topical Anesthetic Selector
Select your procedure details to find the best topical anesthetic for your needs.
30 minutes
When you need a quick, painless way to numb skin for minor procedures, the market offers a handful of creams and patches. Prilox cream comparison often lands on search pages because patients and clinicians want to know which product gives the fastest relief, lasts the longest, and fits their budget. This guide walks you through how Prilox works, what you should measure before buying, and how it stacks up against the most common alternatives.
Quick Take (TL;DR)
- Prilox contains 2.5% lidocaine + 2.5% prilocaine - good for small‑area procedures.
- EMLA (2.5% lidocaine + 2.5% prilocaine) is the gold‑standard for larger surfaces but takes longer to kick in.
- Lidoderm patches deliver 5% lidocaine directly, ideal for needle insertions.
- LMX4 and LMX5 are higher‑strength lidocaine creams used in dermatology clinics.
- Price and insurance coverage vary: NHS often funds EMLA for pre‑surgical use, while Prilox is bought over‑the‑counter.
How Prilox Cream Works
On its first appearance, Prilox Cream is a topical anesthetic that combines 2.5% lidocaine and 2.5% prilocaine in a petrolatum base. The dual‑action blend blocks sodium channels in peripheral nerves, stopping pain signals from reaching the brain. Because both agents have slightly different onset times, the cream typically starts numbing within 20-30 minutes and peaks around the one‑hour mark.
Prilox’s formulation is designed for short‑duration procedures like venipuncture, minor skin biopsies, or laser hair removal on small patches. The petrolatum carrier keeps the medication in place and prevents rapid evaporation, which helps maintain a stable concentration on the skin surface.
Key Decision Factors
Before you click “add to basket”, consider these practical criteria:
- Area size - Larger areas need higher total dose; creams spread more easily than patches.
- Onset vs. duration - If you need numbing in under 15 minutes, a patch may be faster; if you can wait 30‑45 minutes, a cream works well.
- Regulatory status - NHS covers some preparations for clinical use, while others are OTC.
- Price per gram - Cost differences can be significant, especially for repeat users.
- Allergy risk - Prilocaine can cause methemoglobinemia in rare cases; patients with G6PD deficiency should avoid high‑dose products.

Side‑by‑Side Comparison
Product | Active Ingredients | Typical Concentration | Onset (min) | Duration (h) | Typical Use | UK Approx. Price |
---|---|---|---|---|---|---|
Prilox Cream | Lidocaine & Prilocaine | 2.5% / 2.5% | 20‑30 | 1‑2 | Venipuncture, minor dermal work | £4‑£6 per 30g |
EMLA Cream | Lidocaine & Prilocaine | 2.5% / 2.5% | 45‑60 | 1‑2 | Skin grafts, larger biopsies | £8‑£12 per 25g (NHS‑funded for many procedures) |
Lidoderm Patch | Lidocaine | 5% (in adhesive) | 5‑10 | 2‑3 | IV cannulation, cosmetic injections | £7‑£10 per patch |
LMX4 Cream | Lidocaine | 4% | 15‑20 | 1‑2 | Dermatology, laser procedures | £12‑£15 per 30g |
LMX5 Cream | Lidocaine | 5% | 10‑15 | 2‑3 | Intensive laser resurfacing | £18‑£22 per 30g |
Deep Dive into Each Alternative
EMLA Cream - Marketed as a “standard of care” for topical anesthesia, EMLA has the same lidocaine‑prilocaine ratio as Prilox but is packaged in a thicker, occlusive cream. Clinical studies in the British Journal of Anaesthesia show that when applied under a dressing for 60 minutes, EMLA reduces pain scores by 80% for venipuncture. The downside is the longer wait time and higher cost, especially when not covered by the NHS.
Lidoderm Patch - This medicated plaster releases lidocaine directly onto the skin through an adhesive matrix. Because the drug is in a controlled‑release system, onset is rapid (5-10minutes). It’s ideal for single‑point procedures like inserting a peripheral IV line. However, the patch size limits coverage, and some patients report sticky residue after removal.
LMX4 & LMX5 Creams - Both are higher‑strength lidocaine gels used primarily by dermatologists for laser‑assisted skin resurfacing. LMX5, at 5% lidocaine, can numb larger fields within 10‑15 minutes, but it also carries a greater risk of systemic absorption if applied to broken skin. Both are prescription‑only in the UK.
Other Over‑the‑Counter Options - Products like Anbesol Gel (2.5% lidocaine) or generic “numbing creams” often lack rigorously tested formulations. Users may experience inconsistent numbing or irritation, especially on sensitive areas like the genitals.
Choosing the Right Cream for You
If you’re a patient scheduling a minor skin procedure, ask your clinician whether the clinic already has a supply of EMLA. If the appointment is within a tight window, a Lidoderm patch may save you a waiting period. For home‑use-such as prepping a tattoo site-Prilox offers a balance of decent onset, low price, and easy OTC availability.
Clinicians should match the product to the procedure’s surface area and depth. For example, a 3cm skin biopsy (shallow) can be handled with Prilox or a small amount of LMX4, whereas a 10cm laser resurfacing session benefits from LMX5’s stronger concentration.
Practical Tips & Common Pitfalls
- Always apply a thin, even layer and cover with an occlusive dressing (plastic wrap or a medical gauze) to improve absorption.
- Allow the recommended waiting time-shortening it rarely improves comfort and can leave the area partially anesthetized.
- Do NOT use on broken skin unless the product is explicitly approved for that use; systemic absorption spikes dramatically.
- Watch for signs of methemoglobinemia (bluish discoloration, shortness of breath) when using high‑dose prilocaine, especially in infants.
- Keep the cream away from children’s hands; accidental ingestion can cause toxicity.

Frequently Asked Questions
How long before a procedure should I apply Prilox?
Apply a thin layer and cover it with an occlusive dressing 20‑30 minutes before the procedure. For deeper anesthesia, you can extend the wait to 45 minutes.
Is Prilox safe for children?
Yes, for children over 2years old when used on small areas. Always follow the pediatric dosing guidelines on the package and consult a GP if unsure.
Can I use Prilox for tattoo preparation?
Many tattoo artists recommend a lidocaine‑prilocaine cream like Prilox. Apply it 30 minutes prior and cover with cling film. Verify that the studio’s health‑safety policy allows topical anesthetics.
What are the main differences between Prilox and EMLA?
Both contain 2.5% lidocaine and 2.5% prilocaine, but EMLA is a thicker, occlusive cream that generally requires a longer application time (45‑60min). Prilox is thinner, cheaper, and available over‑the‑counter, making it a convenient choice for small‑area, short‑notice procedures.
Why would a clinician choose a Lidoderm patch over a cream?
The patch delivers 5% lidocaine directly through an adhesive matrix, giving a rapid 5‑10minute onset. It’s ideal for single‑point, needle‑based procedures where speed matters more than covering a large area.
Zach Westfall
September 28, 2025 AT 11:26I put Prilox on the spot and within minutes the sting vanished. The cream's double action feels like a hidden thunderbolt calming nerves. For a quick finger stick it beats the bulkier patches. Nothing else hits that dramatic sweet spot.