<unk> (oral) is a mast cell stabilizer that is FDA approved for the treatment of mastocytosis.   Common adverse reactions include headache, diarrhea, pruritus, nausea, myalgia, abdominal pain, rash, and malaise.
Cromolyn 
Carbocromen
Plerixafor
Nedocromil
Hymecromone
Methapyrilene
Theobromine
Flumetasone