I found a pattern.

A small cut can come as a surprise. You still have equipment ready.
Menstruation is a natural process in which the lining of the uterus is shed with bleeding. For many people this repeats roughly monthly, with variation from person to person and through life.
In other words, the need is known. The date I do not need to know.
So I would make sure pads and tampons are available for those who need them, when they need them. People choose what they use. A plaster has a different job.
It is the same planning that made toilet paper a given.
I suggest one for “again” as well.
Agree where products are kept, who refills them and who stands in. Products must be available without individual approval. Check that it works on every shift.