I've been trying out some of the remedies for a swollen lymph node in my neck. My doctor and NAET practitioner agree that's what it is. (If there isn't a section on Earth Clinic for NAET treatments, there should be.) Anyway, I started using echinacea and elderberry tea. It also has some other herbs in it. I made it up and drank 2-3 glasses a day cold. In less than a week, I had to go to the doctor because my heart was racing and when I took a deep breath it hurt from my chest up into my neck. I had read about some of the side effects of echinacea that morning before my appointment and thankfully thought to take the box with me to show her. She said it was definitely the tea, prescribed a drug to slow my heart rate down, and told me to drink lots of water. She said she's seen the same problem with energy drinks. So, after a few days off the tea and on the blood pressure medicine, I'm feeling back to normal. I'll be more cautious with the remedies I try next. I've used a homeopathic lymph tonic with echinacea and had no problems. I think it was the amount I was drinking with the tea this time, or perhaps the combination of all the herbs. I think I will stick with drinking apple cider vinegar and rubbing castor oil on the lymph node. The castor oil rub on a bone spur in my foot has worked well.