  The PROSA parton distribution function fit was the first one appeared in the
literature incorporating data on open charm and open bottom production at LHCb,
in order to reduce the uncertainties on gluons and sea quarks at low $x$'s ($x$
$<$ $10^{-4}$). We discuss aspects of the PROSA PDFs of particular relevance
for their usage in the field of Neutrino Astronomy, and their application in
the computation of prompt neutrino fluxes.
