In this study the gastroretentive CBT with different excipients like fast releasing components for loading dose and matrix forming agents like HPMC K-grade polymers. CBT showed biphasic release in the first phase, the first fraction of the dose (immediate dose) was released in less than 60 min, because of fast releasing components and effervescent nature of loading layer then second phase was released from matrix layer as a controlled zero order fashion. Thus, results of the current study clearly indicate, CBT was a stable dosage

form and a promising potential of the this website cefdinir gastroretentive system as an alternative to the conventional dosage form. However, further clinical studies are needed to assess the utility of gastroretentive

CBT. All authors have none to declare. “
“Extended release (XR) formulations LY2109761 chemical structure provide the medication for prolonged periods of time.1 Oral route is the most popular route of drug administration because of its ease of administration and patient compliance.2 Even though oral route is preferred by the patients, in case of chronic situations the dosage form should be administered in divided doses for long periods leading to the noncompliance of patients. There are several disadvantages if the drug is administered frequently.3 Dosage modification is required in such situations.4 Extended release (XR) formulations are preferred because they offer better patient compliance, maintain uniform drug levels, reduce dose and side effects, and increase the safety.5 Acquired immunodeficiency syndrome (AIDS) is caused by human immunodeficiency virus (HIV) which breaks down the immune system and makes the human body ineffective to fight against infections. HIV infects human cells and utilizes the energy and nutrients provided by those cells for their replication. Drugs having shorter biological half-lives need to be administered frequently to maintain constant therapeutic levels. unless It is crucial for the success of

AIDS therapy to maintain systemic drug levels consistently above its target antiretroviral concentration throughout the course of the treatment.6 and 7 Lamivudine (LAMI) is a nucleoside analogue reverse transcriptase inhibitor (NARIT or NART) used in the antiretroviral therapy for the treatment of HIV infection.8 and 9 It is rapidly absorbed after oral administration, with absolute bioavailability of lamivudine is 86 ± 16%. The peak serum concentration (Cmax) of lamivudine is 1.5 ± 0.5 μg/mL. The mean elimination half-life (t½) ranges from 5 to 7 h thus necessitating frequent administration to maintain constant therapeutic drug levels. 10 Moreover there is evidence that nucleoside analogues may be associated with mitochondrial toxicity leading to potentially serious long-term side effects such as lactic acidosis and disorders of lipid metabolism.