First ever use of penicillin IN humans vs first ever use ON humans

ON vs IN 

Alexander Fleming should be credited only for the first ever use of penicillin ON humans : penicillin-the-antiseptic.

The first ever use of penicillin IN humans , penicillin-the-antibiotic , should be rightly credited to Martin Henry Dawson.

As an antiseptic lifesaver, penicillin is no great shakes but then all external cum local antiseptics rarely are.

They rarely fight off life-threatening infections because the infections that kill us usually are that ones that invade us inside our bodies and include our whole bodies.

An internal cum  general systemic medicine is needed to fight a generalized systemic internal life-threatening disease.

And there is where penicillin truly begins to shine.

Honour just one Scot ,if you must, to stand in for all those who brought us  wonderful penicillin-the-lifesaver , but please honour the right one ...