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NCT Number: NCT00110253

Duration of Skin Numbing Effect Created by the S-Caine™ Peel

S-Caine™ Peel (lidocaine 7% and tetracaine 7% cream) is a new skin numbing cream made of lidocaine and tetracaine. The purpose of this study is to evaluate and measure the length of time the S-Caine Peel numbs the skin, when applied for 30 and 60 minutes.

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Key information

Conditions

Pain Neurologic Manifestations Pathological Conditions, Signs and Symptoms Signs and Symptoms

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 3

Primary location

Radiant Research

San Diego, California, 92123, United States

About this study

This was a single center, randomized, double-blind, placebo controlled, paired study that evaluated the duration of anesthetic effect produced by S-Caine Peel when applied for 30 or 60 minutes in 40 adult volunteers. A pinprick test was used to determine duration of anesthetic effect.

At the procedure visit, subjects were to be assigned the lowest available sequential subject number. Treatment was randomized according to a computer-generated randomization schedule provided by the sponsor. The randomization to application time of 30 or 60 minutes was to be 1:1 and un-blinded. The randomization of study drug to treatment area (concurrent applications of either S Caine Peel applied to the anterior surface of the right thigh with placebo applied to the anterior surface of the left thigh, or placebo applied to the anterior surface of the right thigh and S-Caine Peel applied to the anterior surface of the left thigh) was 1:1 and double-blind. Instructions for implementing the randomization (ie, the correct application time and treatment area) appeared on the study drug labels assigned to each subject number.

Subjects were administered both S-Caine Peel and placebo on separate thighs for either 30 or 60 minutes. The study drugs were applied concurrently to the anterior surfaces of the right and left thigh (one application per thigh, with study drug applied to the right thigh first, followed immediately by application of the alternate study drug to the left thigh). Each study drug was dispensed to cover a 200 cm² treatment area with a uniform thickness of approximately 1 mm

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Subject is 18 years of age or older.
  • Meet pinprick test requirements.

Exclusion criteria

  • Subject is pregnant or breastfeeding.
  • Subject has participated in a clinical trial of an unapproved drug within the previous 30 days.

Treatment and study plan

S-Caine™ Peel (lidocaine and tetracaine cream 7%/7%)

Drug

S-Caine Peel is composed of a 1:1 eutectic mixture of 7% lidocaine, and 7% tetracaine, which was applied topically. The S Caine Peel was applied at approximately 1 mm in thickness and remained on the treatment area for 30 or 60 minutes

Other names: Pliaglis

Primary outcomes

  1. Duration of anesthetic effect

    Time frame: first time after onset when the number of painful pinpricks was 3 or more for 2 consecutive time points

    The duration of anesthesia was defined as the difference between the onset and end of anesthesia. If there was no onset of anesthesia, the duration was defined as zero. Onset of anesthesia was defined as the first time that the number of painful pinpricks was 2 or less (out of 5) for 2 consecutive time points. For subjects/treatments with onset of anesthesia, the end of anesthesia was defined as the first time after onset when the number of painful pinpricks was 3 or more for 2 consecutive time points

Secondary outcomes

  1. Number of participants with adverse events

    Time frame: 72 hours

    To monitor the nature and frequency of adverse events (AEs) associated with the application of S-Caine Peel

Sponsors and collaborators

Lead sponsor

ZARS Pharma Inc.

Industry

Registry information

Official study title

A Randomized, Double-Blind, Paired, Placebo Controlled Study Evaluating the Duration of Anesthetic Effect Produced by the S-Caine™ Peel (Lidocaine 7% and Tetracaine 7% Cream) When Applied for 30 and 60 Minutes

Important dates

Study start
2005
Primary completion
2005
Study completion
2005
First posted
May 5, 2005
Registry last updated
Jun 5, 2012

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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