[InfoI]

FELDENE

FELDENEcontains piroxicam which is a member of the oxicam group of nonsteroidal
anti-inflammatory drugs (NSAIDs). Each maroon and blue capsule contains 10 mg piroxicam, each
maroon capsule contains 20 mg piroxicam for oral administration. The chemical name for piroxicam is
4-hydroxyl-2-methyl-N-2-pyridinyl-2H-1,2,-benzothiazine-3-carboxamide 1,1-dioxide. Piroxicam
occurs as a white crystalline solid, sparingly soluble in water, dilute acid and most organic solvents. It
is slightly soluble in alcohol and in aqueous solutions. It exhibits a weakly acidic 4-hydroxy proton
(pKa 5.1) and a weakly basic pyridyl nitrogen (pKa 1.8). The molecular weight of piroxicam is 331.35.