If someone wants one of the tablets that comes is a roll of Rolaids, do they want one Rolaids, or one Rolaid?

1 Answer
Dec 8, 2016

One Rolaid.

Explanation:

Rolaid exists as a singular form (at least in the part of the world where I live).

Perhaps there might be some confusion here if you are thinking in terms of (for example) Wether's candies; a single Wether's candy maintains the s since it is a possessive and not quantitative indicator.