The final active ingredient listed in Metabolife is Royal Jelly.
Similar to the bee pollen, royal jelly is "a secretion of honey bees."
It is used as a health tonic, even though "its beneficial effect for man
is unproven and...some serious adverse reactions have resulted following
its ingestion" (Thien et al., 1996). These effects include asthma, anaphylaxis,
and even death (Thien et al., 1996). The goal behind the Thien's study
was to find the association between "asthma and anaphylaxis induced by
royal jelly." The results of the study indicated that "subjects who experienced
an allergic reaction to royal jelly have serum IgE antibodies to a number
of royal jelly protein components." However, and additional discovery uncovered
that "the occurrence of IgE antibodies that react with royal jelly protein
is not confined to subjects known to be allergic to the extract" (Thien
et al., 1996). Individuals with other known allergies tended to exhibit
the same symptoms, in this case. The repercussions of these allergic reactions
can be fatal, and yet there is no mention of them on the Metabolife packaging
or even on the websites where it is advertized. Again, this is an indication
of lack of safety of the substance. An individual with severe allergies
could put himself in great jeopardy by consuming the Metabolife product.
Part I Part
II Part III