What's the difference between regular acupuncture and herbal acupuncture? I'm curious about the effectiveness of herbal acupuncture.

Hello. I've been getting more interested in oriental medicine lately. It seems to be effective in improving blood circulation and removing blood stasis after an accident. I've also heard about something called herbal acupuncture. I'm curious about when herbal acupuncture is effective, unlike regular acupuncture. I'd also like to know if there are any side effects or precautions to take.