HPMC has good film-forming, dispersing, thickening, adhesive, water-retaining, and protective colloid properties, it is a safe edible raw material and is widely used in the field of empty pharmaceutical capsules.

    And empty gelatin capsule is also one of the capsule coating materials made of gelatin as the main material, and the empty capsules that are not filled with medicine are called empty capsules, which are used for filling medicine. The drug is directly wrapped by the drop method, steel mold method, or rotary mold method to form a soft capsule. In order to improve the properties of capsules and endow them with special functions, various additives can be added, such as plasticizers (glycerin, sorbitol, etc.), opacifiers (titanium dioxide [2], barium sulfate, etc.), slow-release and enteric excipients (o-phthalic acid, etc.) Cellulose acetate dicarboxylate, shellac, propyl methylcellulose phthalate, methacrylic acid-methacrylic acid methyl ester copolymer, etc.), surfactants (Tween, lauryl Sodium sulfate, etc.), as well as fungicides, flavoring agents, and coloring agents.

    In real life, some people feel that the capsules are hard to swallow, and sometimes pour out the powder of the capsules and then take them with water. Doctors do not recommend these behaviors, because some drugs are more irritating to the stomach, such as some enteric-coated tablets, Because the gelatin in the capsule shell is not soluble in gastric acid, the capsule will always wrap the drug and enter the intestinal tract, dissolve and be absorbed in the intestinal tract, which is beneficial to protect the human stomach; Stimulation of small drugs to the human body.