Does herbal acupuncture at the Korean medicine clinic have any effects?

I have experienced fluid buildup in my knee and received orthopedic treatment, but it was only temporary, so now I am visiting a traditional Korean medicine clinic. They recommended 10 sessions of pharmacopuncture. Since it's not covered by insurance and the cost is expensive, I'm hesitating. I'm considering trying it if it proves effective. I've heard it can be painful, but has anyone experienced positive results? Please share your experiences in the comments.