The present study performed by preparation and evaluation of floating tablets of
Aceclofenac as model drug. For prolongation of gastric residence time. Floating effervescent tablets were
formulated by various materials like. hydroxypropyl methylcellulose (HPMC) K 4M, K 15M, psyllium
husk, swelling agent as crospovidone and micro crystalline cellulose and gas generating agent like sodium
bicarbonate and citric acid and evaluated for floating properties, swelling characteristics and drug release
studies. Floating non effervescent tablets were prepared by polypropylene foam powder and different
matrix forming polymers like HPMC K 4M, Carbopol 934P xanthan gum and sodium alginate