TABLETS Coating Pharmacy school Chen Jian Why coat tablets? Tablet properties Protect the medicinal agent ■Smooth surface ■Mask the taste ■Physical shape Provide esthetics or distinction Mechanical strength Provide special release characteristics Coated tablets Sugar-coated tablets ■Sugar Coated Tablets 1.Waterproofing and sealing 2.Subcoating Film Coated Tablets 3.Smoothing and final rounding 4.Finishing and coloring Enteric coated tablets 5.Polishing 11 TABLETS Pharmacy school Chen Jian Coating Why coat tablets? „ Protect the medicinal agent „ Mask the taste „ Provide esthetics or distinction „ Provide special release characteristics Tablet properties „ Smooth surface „ Physical shape „ Mechanical strength Coated tablets „ Sugar Coated Tablets „ Film Coated Tablets „ Enteric coated tablets Sugar-coated tablets „ 1. Waterproofing and sealing „ 2. Subcoating „ 3. Smoothing and final rounding „ 4. Finishing and coloring „ 5. Polishing