Identifying Your Sleep Medication: A Guide to AS209 Capsules - Pharmacology

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Medication Appearance Consultation


In the past two weeks, I have been experiencing insomnia due to changing jobs.
A pediatrician prescribed me medication to help me sleep better, but the receipt did not specify the type of medication.
I would like to know what medication I am taking.
The appearance of the medication is a completely white capsule with blue lettering "AS209" on both ends.
Thank you for your response!

Ms. E, 20~29 year old female. Ask Date: 2016/07/01

Dr. Gu Zhenting reply Pharmacology


A physician must not administer treatment, prescribe medication, or provide a diagnosis without a personal examination.
This medication is "Xinshuning Capsules 10 mg," manufactured by Anxing Pharmaceutical Co., Ltd., with the main ingredient being OXAZOLAM.

Reply Date: 2016/07/01

More Info


The capsule you are describing, which is white with blue markings "AS209," is identified as Oxazepam, a medication commonly used to treat anxiety and insomnia. Oxazepam belongs to a class of drugs known as benzodiazepines, which work by enhancing the effects of a neurotransmitter called gamma-aminobutyric acid (GABA) in the brain. This action helps to produce a calming effect, making it useful for individuals experiencing anxiety or sleep disturbances.

When it comes to using Oxazepam or any benzodiazepine, it is essential to be aware of several important considerations. First and foremost, these medications can lead to dependence if used for extended periods. Therefore, they are typically prescribed for short-term use, often not exceeding a few weeks. It is crucial to follow your physician's instructions closely regarding dosage and duration of use.

In addition to the risk of dependence, benzodiazepines can cause side effects. Common side effects of Oxazepam include drowsiness, dizziness, confusion, and impaired coordination. Some individuals may also experience more severe side effects, such as memory problems, mood changes, or unusual behavior. If you notice any concerning symptoms, it is vital to contact your healthcare provider immediately.

Moreover, it is important to consider the potential for interactions with other medications. If you are taking other prescriptions or over-the-counter drugs, be sure to inform your doctor to avoid any adverse interactions. Alcohol should also be avoided while taking Oxazepam, as it can enhance the sedative effects and increase the risk of side effects.

For individuals with certain medical conditions, such as respiratory issues, liver disease, or a history of substance abuse, caution is advised when using Oxazepam. Your healthcare provider will evaluate your medical history and current health status to determine if this medication is appropriate for you.

If you are experiencing insomnia, it may also be beneficial to explore non-pharmacological approaches alongside medication. Cognitive-behavioral therapy for insomnia (CBT-I) is an effective treatment that focuses on changing sleep habits and behaviors. Additionally, practicing good sleep hygiene—such as maintaining a regular sleep schedule, creating a comfortable sleep environment, and avoiding stimulants before bedtime—can significantly improve sleep quality.

In summary, the AS209 capsules you are taking contain Oxazepam, which can be effective for managing anxiety and insomnia. However, it is crucial to use this medication under the guidance of a healthcare professional, be aware of potential side effects and risks, and consider integrating behavioral strategies to enhance your sleep quality. Always communicate openly with your doctor about your symptoms and any concerns you may have regarding your treatment plan.

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