The drugs having a narrow absorption window in the gastrointestinal tract (GIT) when administered by oral route are often limited by poor bioavailability due to incomplete drug release and short residence time at the site of absorption. Novel drug delivery systems in the form of gastroretentive systems such as floating systems, mucoadhesive, high-density, expandable have been developed as they provide controlled delivery of drugs with prolonged gastric residence time. Liquid orals are more prone to low bioavailability because they are eliminated quickly from the stomach since they are subjected to faster transit from the stomach/ duodenum. The problems of immediate release and short gastrointestinal residence of liquids are eliminated by formulating as oral in situ gels as they provide the best means to overcome these problems The in situ gel dosage form is a liquid before administration and after it comes in contact with gastric contents due to one or more mechanisms gets converted to gel which floats on gastric contents. This achieves increased residence as well as sustained release. This approach is useful for systemic as well as local effect of drugs administered. This review gives a brief idea about floating oral in-situ gel formation and research done by various scientists on a number of drugs and polymers. Keywords: Floating drug delivery, gastric retention time, In-situ gel.

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Bunium persicum(BOISS)B.Fedtsch belonging to family Apiaceae is native to the region of the limited zones of the West Asia, Kherman and grows to the areas of North Khorasan and Kheraman, East of the Zagros range to Bandar Abbaas and south area of the Albroz range in Iran. It is also found in North western parts of Himalayas. Bunium persicum is found growing naturally in sub-alpine and alpine habitats of North Western Himalayas. It is a perennial herb, dwarf 30cm to tall 80cm and its flowers are small, white in color. Keywords: Bunium persicum, Apiaceae, North-Western Himalayas, Perrenial Herb

Inflammation involves a sequence of events which can be categorized under three phases viz. acute transient phase, delayed sub-acute phase and chronic proliferate phase. Inflammatory mediators develop due to enhanced vascular permeability and leads to local edema. It is followed by the migration of leukocytes and phagocytes from blood to vascular tissues which is the second phase, in the third phase, tissue degradation is followed by fibrosis. There is a powerful link between chronic diseases and chronic inflammatory disorders. Chronic low-level inflammation contributes to the pathogenesis of these several diseases like Heart disease, Cancer, Chronic lower respiratory disease, Stroke, Alzheimer’s, Diabetes, and Nephritis. The harmful side effects of synthetic drugs are numerous and there stands up the need of herbal drugs which are cost effective and free from side-effects. Several traditional ayurvedic phytomedicines have been used in the treatment of inflammatory disorders like Ocimum sanctum, Hypericum peroratum, Boswellic serrata, Ficus racemosa etc. which act as natural anti-inflammatory agents that can help in reducing the complications associated with chronic diseases. Key Words: Inflammation, Chronic-low level inflammation, Cancer, Diabetes, Phytomedicines

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