Pennicillin if i have everything correct,  was a highly valuable
Myco-toxin,  discovered during WW2.  It proved to have an amazing
Bacterio-cidal effect without human toxicity.   It's immediate
administration  showed immediate dramatic results  solving
problems  that previously were fatal.  Although initially
enormously expensive to culture,  within 3 years,
the price had fallen at least two orders of magnitude,
and within 10 years,  was  not much more expensive then
aspirin.  Penicillin was also usable for an amazingly wide
class of infections.

Centoxin is a drug that is not passing FDA approval.  It promised
amazing results for Toxic shock, a rapidly fatal disease.
It consumed enormous amounts of funding  in testing and
developement,  However it works  less then 1 in 5 times
of administration  and costs $2,000 per administration
with no promise of any reduction in manufacturing cost.
The drug thus costs $10,000 per useful case,  and is
implicated in a slight increase in mortality for some
patients.

I would not dare to compare the shuttle to Pennicillin,
but to centoxin.