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Just contacted the Merck Service Centre at 1 800 672 6372 about Singulair
which is a great product for controlling asthma.

I have been having a 'gluten' reaction to this medicine.

Merck says that if there is starch in any of their meds it is made from corn
and contains from .01 to.05% gluten.

According to the info sheet, Singulair contains no starch.  However, it is
producing a reaction.  Strange...!!

Jessie