Can I receive the COVID-19 vaccine after taking Xiaochaihu granules?

Dec 09, 2025 Source: Cainiu Health
Dr. Ren Yi
Introduction
If the discomfort is mild and medication has been discontinued, and there are no abnormalities observed over 3–5 days with good recovery of physical condition, it is acceptable to proceed with the COVID-19 vaccination as scheduled. However, if you are still taking medication, or if cold symptoms have not improved or are even worsening, treatment should continue and vaccination should be postponed until full recovery to avoid potential health risks from overlapping conditions.

Generally, it is not recommended to receive a COVID-19 vaccine immediately after taking Xiaochaihu Granules. Vaccination can be scheduled 3–5 days after symptoms have subsided and medication has been discontinued. However, during the acute phase of a cold, vaccination should be postponed. If in doubt, it is advisable to consult professionals at the vaccination site. Detailed explanation is as follows:

Xiaochaihu Granules are commonly used to relieve symptoms caused by colds, such as fever, fatigue, and sore throat. During this time, the body is in a state of discomfort and the immune system may be compromised. Receiving the COVID-19 vaccine immediately may reduce its immunogenicity and could potentially worsen vaccine-related adverse reactions, placing additional strain on the body.

If symptoms are mild and medication has been stopped, and there are no abnormalities observed over a 3–5 day period with good recovery of physical condition, it is generally safe to proceed with the COVID-19 vaccination. However, if you are still taking the medication, or if cold symptoms have not improved or are even worsening, treatment should continue and vaccination should be delayed until full recovery to avoid compounding health risks.

Prior to vaccination, inform the healthcare provider about your recent medication use and current health status. Avoid vaccination during medication use, and allow sufficient observation time after discontinuation of the drug.

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