> defines “long-lasting” as 1 month
Where’s this? You take a pill with each serving of dairy. I usually carry a strip of 3 or 6 individually packaged pills if I’m out for the day. Each pouch has an expiration date on it, and that’s at least a couple of years, so I leave stashes in the car, camera bag, friends’ houses, wherever.
Even taking 3 or 4 on some days, you’re still right, the cost isn’t much of an issue.