The best replacement for meconium is mucus plug.

The best alternatives to meconium are rated as following:
★★★★★  mucus plug
★★  bloody show
★★  vernix

Your alternative for meconium is not listed? Suggest!
Speaking about meconium, one probably shouldn't forget about water breaking.

Other search terms related to meconium and their ratings are:
★★★★★ water breaking
★★ rupture of membranes
You have in mind a companion for meconium and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of meconium in all years. Click on graph for more.
meconium
mucus plug
bloody show