Well, not exactly. But, if your child relies on Children's Zyrtec Chewable Tablets in order to control his or her allergy symptoms, you might have to buy a few extra boxes of Kleenex. The maker of this popular allergy medicine, Johnson & Johnson's McNeil Consumer Healthcare, won't be producing the medication again until 2012, according to Consumer Ally. Apparently this isn't a safety issue, but rather a change in production location, so any supply that is currently available is still OK to use.
The shortage of Children's Zyrtec Chewable Tablets may present a problem for certain allergic children (and their parents), however. Finding a substitute shouldn't be that hard -- many generic versions of Zyrtec (as cetirizine) are also available over-the-counter, although I can't promise that you'd be able to find chewable tablets, or the same flavor/taste as the Zyrtec brand. If you're unsure of an equivalent medication, check with your child's pediatrician or with the pharmacist at your drugstore.