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January 15, 1949


JAMA. 1949;139(3):155. doi:10.1001/jama.1949.72900200003010a

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POISON IVY-POISON OAK EXTRACT COMBINED.— Ivoko-Pitman-Moore. —  A combination of equal parts of the extracted solids of the dried leaves of poison ivy and oak prepared in accordance with requirements of the National Institute of Health.

Actions and Uses.—  Poison Ivy-Poison Oak Extract Combined is used for the prevention of symptoms of dermatitis due to contact with either of these plants.

Dosage.—  Parenteral injections of the number and volume recommended for the product used. The interval between doses is usually two weeks.An extract standardized to contain 1 mg. of total extracted solids (0.5 mg. of each) per cubic centimeter is administered in an average dose of 0.1 cc. of the extract diluted to a volume of 1 cc. In hypersensitive persons, one twentieth of that dose should be used as a test dose and the dose then gradually increased to the average. It is administered at intervals of one

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