Background: Mouth-dissolving wafer is polymer-based matrice that incorporates various pharmaceutical agents for oral drug delivery. This polymeric wafer is ingenious in the way that it needs not be administered with water, like in conventional tablet dosage form. It has better compliance among the pediatric and geriatric groups owing to its ease of administration. Objective: The polymeric wafer dissolves quickly in the oral cavity and is highly effective for a targeted local effect in buccal-specific ailments. It is a safe, effective, and versatile drug delivery carrier for a range of drugs used to treat a plethora of oral cavity-specific ailments that inflict common people, like thrush, canker sores, periodontal disease, benign oral cavity tumors, buccal neoplasm, and malignancies. This review paper focuses thoroughly on the present state of the art in mouth-dissolving wafer technology for buccal drug delivery and targeting. Moreover, we have also addressed present-time limitations associated with wafer technology to aid researchers in future developments in the arena of buccal drug delivery. Conclusion: This dynamic novel formulation has tremendous future implications for designing drug delivery systems to target pernicious ailments and diseases specific to the buccal mucosa. In a nutshell, this review paper aims to summarize the present state of the art in buccal targeted drug delivery.
Objective: Infectious keratitis is a pernicious disease that affects the anterior segment of the eye and is one the leading causes of blindness worldwide. This disease may cause severe visual impairment or permanent vision damage if left untreated. Discussion: No doubt there are many conventional drug delivery systems to treat ocular keratitis, yet it is the fifth leading cause of blindness globally. This is the result of the eye's complex anatomy and barrier system, which restricts the total ocular contact time of the conventional formulations resulting in under-dosing. The widely used traditional formulations to treat keratitis, like antibiotic eye drops and ointments, are rendered useless due to less ocular contact time and low therapeutic drug levels at the target ocular site. The main requirement of the present time is to develop novel drug delivery-backed stratagems to overcome the shortcomings of conventional formulations, which will reduce the morbidity associated with infectious keratitis and improve clinical outcomes. It is worth mentioning that there are documented incidents of Herpetic keratitis of the cornea followed by COVID-19 infection and vaccination. Conclusion: This paper is a rigorous review of all the novel drug delivery strategies to combat ocular keratitis. These future drug delivery strategies will pave the way for the present time researcher and formulation chemists to develop multi-dimensional novel formulations that are safe, patient-compliant, and surpass the ocular barriers to maintain therapeutic drug levels in ocular tissues.
Starch has cropped up as a new attractive biopolymer for use in pharmaceutical applications, owing to its distinctive physical, chemical and functional properties. This biopolymer has a number of potential advantages like being biocompatible, low cost, easily isolated from plant sources and non-toxic in nature. In the field of pharmaceutical science, starch is used as a raw material for the development of various drug delivery platforms. Generally, cassava starch (tapioca) is obtained from swollen roots of the perennial shrub Manihot esculenta and it contains a low amount of amylose in contrast to other varieties of starches. Because of this reason, cassava starch exhibits various prime benefits including little gelatinization temperature, higher swelling power and produces relatively high viscosity paste, making it preferable as an excipient for pharmaceutical applications. However, cassava starches in their native form are offensive for many applications due to their inefficiency to withstand various processing requirements like high temperature and diverse pH, but their use is enhanced by starch modification. These functional starches have demonstrated outstanding potential as primary excipients in a number of pharmaceutical formulations. In this article, we discuss the potential application of cassava starches in the pharmaceutical and biomedical fields along with the toxicity assessment of modified cassava starches.
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