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You‐Gui‐Wan is a widely used traditional Chinese medicine preparation for the treatment of osteoporosis with kidney‐yang deficiency, and is composed of both yang‐invigorating and kidney‐tonifying herbs, and yin‐nourishing and kidney essence‐replenishing herbs. Considering that the pharmacokinetics of drugs might differ in different pathological conditions, it is necessary to study the pharmacokinetic...
HY072808 is a novel phosphodiesterase 4 inhibitor currently under clinical development to treat atopic dermatitis. The first step is to address the pharmacokinetics and safety after topical administration of HY072808 ointments in healthy humans. In this study, we developed a highly sensitive liquid chromatography–tandem mass spectrometry method to determine plasma HY072808 and its active metabolite,...