One of the most challenging tasks faced by the pharmaceutical researchers is the ophthalmic drug delivery. Their aim is to obtain and maintain a therapeutic level at the site of action for prolonged period of time. Therefore, to sustain drug levels at the target site for a sufficient time, novel drug delivery techniques should be developed. Ophthalmic drug delivery has proved significant advancement for future point of view. This article evaluates a variety of novel systems for ophthalmic drug delivery.

No abstract

Biotin is also called vitamin B7, vitamin B8 or vitamin H. Biotin is a water soluble compound and is colorless in appearance. Overall eight different types of biotin exist but only Biotin-D occurs naturally with its complete vitamin activity. It is mainly synthesized by mold, algae, bacteria, yeast and some plant species. There are different methods used to find the vitamins in nutrients and samples. This article is composed of the comprehensive review of the competitive techniques and various methods for the assay of biotin. High-pressure liquid chromatographic (HPLC), microbiological analysis and HPLC producer are adopted for the determination of biotin. An optimal analytical condition of biotin determination was performed by the HPCL method. The statistical parameters of the HPLC methods were compared and reviewed with other determination.

The most common symptoms are: difficulty falling asleep, waking up through the night, waking up early in the morning, Feeling irritable and tired and finding it troublesome to function throughout the day [8]. Risk factors It affects about two percent of individuals who go to a sleep center

No abstract