Chewable tablets are solid dosage forms that are chewed and swallowed. They combine the portability of tablets with the ease of oral liquid preparations and are widely used in modern medicine and nutritional supplements. Their primary purpose is to address medication difficulties for individuals with swallowing difficulties (such as children, the elderly, or those with throat problems), while also enhancing drug absorption and improving the taste experience through the chewing process.
From a pharmacological perspective, as chewable tablets disintegrate in the mouth, the drug mixes thoroughly with saliva. Some components are directly absorbed through the mucosa, accelerating the onset of action. The remaining active components are then continuously released after digestion in the gastrointestinal tract, prolonging the duration of action. For example, chewable vitamin C tablets release a sweet and sour flavor through chewing, masking the drug's unpleasant taste and promoting synergistic absorption of iron.
In terms of manufacturing, chewable tablets require a balance between hardness and brittleness-ensuring resistance to breakage during transportation and storage while also allowing for easy disintegration during chewing. Common excipients include mannitol (to improve taste), microcrystalline cellulose (to maintain tablet structure), and flavoring agents (such as aspartame). Some products also contain disintegrants to accelerate dissolution.
Currently, chewable tablets have expanded from a single drug dosage form to a diverse range of applications: in addition to common calcium and vitamin supplements, they have also evolved into health products such as probiotic chewable tablets and traditional Chinese medicine chewable tablets. Their advantage is that they can be taken without drinking water, making them suitable for outdoor activities or emergency situations. However, it should be noted that drugs containing volatile components (such as some traditional Chinese medicine extracts) may lose their active ingredients during chewing, requiring optimization through coating technology.
With advances in formulation technology, chewable tablets are moving towards functional segmentation and precise release, demonstrating unique value in improving medication adherence and user experience.
