Hello, there are no contraindications to this. This has a good effect of promoting blood circulation, removing blood stasis, warming meridians and dredging collaterals. If this body has thrombocytopenia and is prone to subcutaneous bleeding, it should be used less. Generally no problem. Because this is safe for external use, it is safe to use. At present, this meridian is impassable, and there are many people with yang deficiency. It is very effective to soak feet with this.