The Propaganda for Reform in Proprietary Medicines, Vol. 2 of 2Council on Pharmacy and Chemistry (American Medical Association)
Science
The Propaganda for Reform in Proprietary Medicines, Vol. 2 of 2
Council on Pharmacy and Chemistry (American Medical Association)
Patent medicines
“... the five active agents of digestion--pepsin, diastase (veg.
ptyalin), pancreatin, lactic acid and hydrochloric acid--combined
in the proper proportion to insure the best results.”
The examination showed that the preparation was essentially “a weak
saccharated pepsin,” containing but small amounts of pepsin, no
hydrochloric acid, or mere traces only, and no diastase or pancreatin
(The Journal, March 16, 1907).
In 1913, the product was reexamined, because the claims, as to both
composition and therapeutic value, were still being made. Samples
were tested both of the American product, and of a British product
from John Morgan Richards & Sons, London. The original findings were
confirmed and the results were published in The Journal, Aug. 2,
1913, p. 358. Nearly four months later (November 24) the New York
Pharmacal Association wrote to the Council, objecting to the findings
and maintaining that Lactopeptine possesses pancreatic activity and
contains (“in loose chemical combination”) hydrochloric acid. In
accordance with the custom of the Council, the work was sent back for
review to the referee (A), whose conclusions were then tested by a
second referee (B), a physiologic chemist, not a member of the Council,
selected because of his special knowledge of the subject.
In December, 1913, Referee A made a large number of new tests to
determine proteolytic and amylolytic power. His results show that
the ferment activity of the preparation is so low as to merit no
recognition in practical use. The tests also show that the amount of
lactic acid or “loosely combined HCl” (or both) present is too small to
have any appreciable physiologic activity and therefore to be of any
therapeutic value.
Nine samples of Lactopeptine purchased in the open market in December,
1913, and January, 1914, were examined by Referee B early in 1914. His
studies show absence of amylase in all samples; presence of pepsin,
giving weak reactions even when compared with those of old pepsin
preparations; complete absence of trypsin in seven out of nine samples,
tryptic reaction being obtained in two samples, in one of which the
reaction, “slight at best and of no practical import,” was obtained
only after treatment for twelve hours or more.
The presence of tryptic activity in two out of the nine samples may
be due to the fresher condition of these specimens, as indicated
by the serial numbers. The evidence shows that it is a commercial
impossibility to market mixtures of pepsin, pancreatin and lactic acid
so that they can display any material tryptic activity.
Public-domain text, read in full here on John Shaqi.
Reviews
Reviews
No reviews yet
Be the first to share your thoughts on this work.
Elsewhere in the archive
Join the Discussion
Join the discussion
Sign in to leave a comment or review.
Sign InorCreate an account