There are several things to take that may assist: parasite herbs will cause a herx reaction and sometimes we may have to bite the bullet until the load is down.
But Pau d" Arco Powder is one in fact that will help..take a capsule and wait to see if it subsides OR
take MSM with gluthione (sp) for joints and it assist with constipation, sulfur for parasites , joint pain, and it detoxes the liver as well.
Also if you don't have parasites one can take plain gelatin disolved in water everyday. Miraculous stuff for joint pain sufferers.
Hope this helps