How long is a medicated plaster typically applied?

Aug 22, 2024 Source: Cainiu Health
Disease description:

Low back pain; a pain-relieving patch was applied on the back. How long is a patch generally applied?

Doctor's answer (1)
Dr. Chen Jian

Typically, the application time for medicated plasters ranges from 4 to 24 hours.

Pain-relieving plasters, such as Musk Bone-Pain Plaster and Anti-inflammatory Analgesic Plaster, are generally applied for about 12 hours. Certain specific plasters, like Sanjie Rupi Plaster, may be applied for a longer duration, up to approximately 24 hours. Additionally, special types, such as heat-activated plasters, can be left on for up to three days. It is recommended to follow the guidance of a physician for exact application duration.

However, the specific duration should also consider the following factors:

1. Adjustment according to the condition: During the acute phase with severe pain, the application time of the plaster may be appropriately extended to enhance therapeutic effects; for chronic conditions, the duration may be adjusted based on individual response to avoid excessive dependence.

2. Monitoring skin reactions: If symptoms such as redness, swelling, or itching occur at the application site, indicating an allergic reaction, application should be stopped immediately. The duration for the next application should be shortened, or an alternative type of plaster should be considered.

3. Type of plaster: Different formulations require varying application times. For example, plasters containing capsaicin may need shorter application periods, while those made from herbal extracts may be suitable for longer application durations.