Essentially the same statements are made in the more recent advertisements (f. i. Urological and Cutaneous Review, Feb., 1919). Opposed to these loose statements are the results of Richard Weil (The Journal A. M. A., 1913, Sept. 27, p. 1034; ibid, 1915, April 17, p. 1283). Weil avoided pitfalls of subjective impressions and used as the essential criterion of efficiency “the demonstrable reduction in size of a tumor, of a kind not to be attributed to the natural processes of evolution of that tumor or of its associated lesions” (l. c. 1915, p. 1289).
The available evidence for Cuprase is far from meeting this criterion. That published by the manufacturers and agents presents only vague generalities, and no definite data. The evidence gathered by Weil himself permits an estimate of the value of Cuprase and it is entirely unfavorable. He states (l.c. 1915, p. 1288):
“Colloidal copper has been used in recent time for the same purpose by Gaube du Gers and by others. I have recently examined the effects of colloidal copper on malignant tumors in man, and have been unable to find that it has any therapeutic value. Furthermore, a study of the distribution of the copper in tumors obtained at operation or by necropsy from individuals so treated failed to show that the copper had been deposited therein.”
In view of the extravagant and cruelly misleading therapeutic claims, and the indefinite statements of composition, the Council voted Cuprase ineligible to N. N. R., and authorized the publication of this report.—(From The Journal A. M. A., April 12, 1919.)
COLLOSOL PREPARATIONS
Report of the Council on Pharmacy and Chemistry
The Council has adopted and authorized publication of the report which appears below declaring “Collosol Argentum,” “Collosol Arsenicum,” “Collosol Cocain,” “Collosol Cuprum,” “Collosol Ferrum,” “Collosol Hydrargyrum,” “Collosol Iodin,” “Collosol Manganese,” “Collosol Quinin” and “Collosol Sulphur” inadmissible to New and Nonofficial Remedies, because their composition is uncertain (conflict with Rule 1). In the few cases in which the therapeutic claims for these preparations were examined, the claims were found to be so improbable or exaggerated (conflict with Rules 6 and 10) as to have necessitated the rejection of these products.
W. A. Puckner, Secretary
The Anglo-French Drug Co., Ltd., London and New York, in November, 1918, requested the Council to consider the products “Collosol Argentum,” “Collosol Arsenicum,” “Collosol Cocain,” “Collosol Cuprum,” “Collosol Ferrum,” “Collosol Hydrargyrum,” “Collosol Iodin,” “Collosol Manganese,” “Collosol Quinin” and “Collosol Sulphur.” The term “Collosol” appears to be a group designation for what are claimed to be permanent colloidal solutions, marketed by the Anglo-French Drug Co., Ltd. Were this claim correct, “Collosols” should contain their active constituents in the form of microscopic or ultramicroscopic suspensions, protected against spontaneous precipitation by the presence of proteins or some similar “stabilizers.”