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

ZARS Pharma

Status and phase: Completed; Phase 3

Conditions: Pain

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

Study type: Interventional

Funder types: Industry

Identifiers

NCT00110253

SCP-44-05

Details and patient eligibility

About

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.

Full description

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

Enrollment: 40 patients

Sex: All

Ages: 18+ years old

Volunteers: Accepts Healthy Volunteers

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.

Trial design

Primary purpose: Treatment

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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40 participants in 1 patient group

S-Caine Peel

Experimental group

Treatment:

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