Lidocaine HCl
Also known as: lidocaine hydrochloride, lignocaine, lidocaine 2%, LDC
Effective Dosage
No established dose for supplement use; clinical applications use 2% topical/injectable formulations
What the Science Says
Lidocaine HCl is a local anesthetic — a drug that temporarily blocks nerve signals to reduce pain in a specific area. It is used by healthcare providers during medical and dental procedures, such as injections, IV placement, and minor surgeries. Clinical trials show it can reduce procedural pain when injected or applied topically, though its benefit over plain lubricant jelly is not always significant depending on the procedure.
What It Doesn't Do
Not a dietary supplement — it is a regulated pharmaceutical drug. Won't provide systemic pain relief when taken orally as a supplement. No evidence it treats chronic pain conditions when self-administered. Topical lidocaine jelly did not outperform plain lubricating jelly for pessary removal pain in one RCT. No evidence it improves athletic performance, recovery, or any wellness outcome marketed in supplements.
Evidence-Based Benefits
Lidocaine HCl is a local anesthetic — a drug that temporarily blocks nerve signals to reduce pain in a specific area. It is used by healthcare providers during medical and dental procedures, such as injections, IV placement, and minor surgeries. Clinical trials show it can reduce procedural pain when injected or applied topically, though its benefit over plain lubricant jelly is not always significant depending on the procedure.
Moderate EvidenceEffective at: No established dose for supplement use; clinical applications use 2% topical/injectable formulations
Source: auto-research
Absorption & Bioavailability
Unknown for oral supplement use. Topical absorption is variable and context-dependent; one pharmacokinetic pilot study in minipigs explored dermal concentration vs. systemic bioavailability but no abstract data was available. Injectable forms deliver drug directly to target tissue.
Red Flags to Watch For
- Lidocaine HCl is a prescription pharmaceutical drug, NOT a dietary supplement — its presence in 1,000+ NIH DSLD-registered supplement products is a serious regulatory red flag
- Self-administering lidocaine without medical supervision carries risks including cardiac toxicity, allergic reactions, and systemic overdose
- Topical lidocaine products sold as supplements may not be properly dosed or sterile, increasing safety risks
- No clinical evidence supports lidocaine HCl as an effective ingredient in over-the-counter wellness or performance supplements
- Contains a known carcinogenic impurity (2,6-dimethylaniline / DMA) that requires careful pharmaceutical-grade testing and control
Products Containing Lidocaine HCl
See how Lidocaine HCl is used in these analyzed products:
Research Sources
- PubMed
- NIH DSLD
This information is for educational purposes only and is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Last updated: 2026-04-09