I know this wouldn't have helped you as you needed it pronto and I have no idea if it's a prescription only substance or not, but I order Vaseline (in the 250 ml tub with the blue plastic lid) for about 3 euros from Amazon France.
But I do agree that you need to keep away from pharmacies unless it's for an ordonnance. Nowadays there are more and more on-line pharmacies which are generally cheaper but cost of delivery could push prices up or you might have to buy industrial quantities to qualify for free delivery. I use one where, about 4 or 5 times a year, they give you free delivery with no minimum purchase. So I stock up on my fav products and wait and order at only those times of no charge for delivery.
Sovereignty: the right to eat cholorinated chicken.
from The Little Book of Brexit Bo ll oc ks