<unk> (nasal) is a mast cell stabilizer that is FDA approved for the treatment of nasal symptoms due to hay fever and nasal allergies.   Common adverse reactions include stinging, nosebleeds, and sores in the nose.
Cromolyn 
Carbocromen
Plerixafor
Nedocromil
Hymecromone
Methapyrilene
Theobromine
Flumetasone