Abstract: The present invention relates to a controlled release injectable ondansetron formulation comprising ondansetron or pharmaceutically acceptable salt, derivative or metabolite thereof which releases ondansetron over a period of at least 2 days period from the date of administration and the process for preparation thereof.

Abstract: The present invention relates to topical spray compositions comprising chitosan and the process for preparation thereof. The topical spray compositions comprising chitosan are used for the treating burn wounds, wounds resulting from chemical burns, wounds from physical trauma, neuropathic ulcers, pressure sores, diabetic ulcers. Further the spray compositions composition is used for treating gynaecological diseases, urogenital infections (vaginal bacteriosis, urinary tract infection and vaginitis) with good effect, safe, natural, and good biocompatibility by restoring and/or maintaining the pH of vagina. More specifically the present invention relates to topical spray compositions comprising chitosan and carbonic acid and the process for preparation thereof.