1. Hypertensive patients: apocynum tea has a certain stimulating effect, which will make blood vessels contract and lead to an increase in blood pressure, so hypertensive patients are not suitable for drinking apocynum tea.

2. Puerpera: apocynum tea has a certain effect of removing blood stasis, which easily leads to increased maternal bleeding, so it is not advisable for puerpera to drink apocynum tea after operation.

3. Dyspepsia patients: Because Apocynum venetum tea set is irritating, it is easy to cause indigestion, diarrhea, stomachache and other discomfort symptoms, so patients with dyspepsia should not drink apocynum tea.