Has nasalcrom (cromolyn) been discontinued from the stores?

Cromolyn spray OTC. You can still buy Nasalcrom (cromolyn) in the stores or on amazon, eg ($14). It's available without a prescription. Sometimes the small bottles are stored behind the counter to prevent shoplifters from "palming" them and walking out. Ask the pharmacist where to look or order some online. They may be out if it's peak allergy season, or they may not have had much demand for it. If you ask, they can get it.