Ketamine molecule:

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Ketamine Clinical Trials

Plasma Concentrations of Ketamine and Norketamine in Patients Using Topical Application of 10% Ketamine for Neuropathic Pain.

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Id: NCT01385904

Organisation Name: Lawson Health Research Institute

Overal Status: Unknown status

Start Date: June 2011

Last Update: June 30, 2011

Lead Sponsor: Lawson Health Research Institute

Brief Summary: The purpose of this research study is to measure how much, if any, ketamine is absorbed into the blood stream after ketamine gel is applied to the skin. The investigators expect that the topical administration will provide pain relief locally, at the site of pain, but not be absorbed into the bloodstream and thus not cause side effects. This research will help assess the safety of this drug by measuring the blood concentrations of the drug.

Ketamine is a general anesthetic drug but also has excellent pain relieving qualities. It has been used to relieve chronic pain by administering intravenously, by mouth, or as an injection beneath the skin. When given these ways ketamine can occasionally cause side effects like dizziness, nausea, nightmares, agitation, hallucinations. Recently it has been used topically for patients with neuropathic pain in order to avoid the dizziness and nausea side effects.

Neuropathic Pain can be partially caused by the misfiring of small nerve fibers close to the area of pain. By applying it on the skin, it is expected the drug can penetrate the skin and act directly on the small nerve fibers. The advantage is that less drug will get into the blood circulation. Up to now, it has not been carefully studied how much of the drug appears in the circulation after application on the skin.

  • Neuropathic Pain.

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