LOMOTIL

[barq2]

Kirkland Signature (the CostCo own brand) do loperamide in bottles of 200 x 2mg tablets for only a few dollars ($10-15). I think I got mine from a general health and supplement shop. I can PM you a name if you struggle finding it, but search for "Kirkland Loperamide" and you'll find it quite easily.

I'd say it is a useful addition to any family's medicine cabinet.