Wood Lock

From Wikipedia, the free encyclopedia - View original article

Jump to: navigation, search

Wood Lock is a Chinese medicated liniment/ointment (external analgesic) from Hong Kong. Its intended purpose is to relieve muscle aches and pains. It is highly popular in Hong Kong and sold in North America at Chinese herbalist stores.

Wood Lock has been made by the China Medicine Laboratory and Wood Lock Medicine Company Limited since 1968.

The liniment is based on the formula of the traditional White Flower Oil recipe, in which the creator, Wong To Yick, added several Chinese herbs including Dong Quai. In this sense, it can be considered to contain herbal extracts but it was never labelled.

This liniment has an unconventional form of application, using acupressure methods rather than the conventional massage; the oil is applied on the point of pain and finger pressure is then applied on the point for 15 minutes.



As of 1994-1996, the medicated liniment shipped to the United States of America was packaged in .85- and 1.7-fluid-ounce glass bottles with black plastic caps. The label contained a photo of a man's face as well as "WOOD LOCK Medicated Balm" in both English and Chinese writing.

It was recalled in the United States of America on November 19, 1996 because of incorrect packaging that could result in children ingesting the poisonous Methyl Salicylate ingredient, resulting in severe injury or death.

Solstice Medicine Company is the United States importer and distributor of Wood Lock Medicated Oil.


Wood Lock Medicated Balm is imported by T.C.UNICORN LTD in Toronto. The genuine Wood Lock Medicated Balm is packaged in a 50mL bottle.The front of the package has a dome-shaped window, with "NPN # PENDING" printed at right side above the window; at the back of the package has directions both in English and French, with one portrait of the inventor Wong To Yick.

There are imitation Wood Lock products sold in Canada. The fake package has a squarish window at the front, no "NPN# PENDING"; three portraits at the back, no English / French dual language direction and no importer information.

Active ingredients[edit]

Per 50 milliliter:

Other ingredients per 50ml[1]


  1. ^ Package insert of Wood Lock Medicated Balm, December 2010

See also[edit]