I eat a good amount of cilantro (w/garlic/lemon/olive oil), 2 grocery store size bunches per week. Been doing that for months, in summer I will grow my own. Don't often get headaches these days, have never gotten them from cilantro. I did get headaches in the early stages of chelation, and cilantro helped relieve them. I do eat feverfew , maybe a little bit once a week, or every couple weeks. feverfew will help keep headaches away. if you get them alot, use it more often, daily is ok for a while.

Also though I don't generally get them, I will always get a headache if I get constipated, i'll get a slight headache, well more like stuffy not quite foggy head, if slightly constipated.

You should use a colon cleanse product a 2-3 times week early on to help your intestines/bowels stay moving and clear. You can opt for professional colonics/hydrotherapy. Or you can use an at home high enema option. Achy lower back and achy shoulders, achy knees are another sign of constipation/slow bowels/recirculation of the toxins.

I use dmsa now and then, very rarely these days, only if I feel very stuffy in the head and nothing else helps.

Algin is great stuff. Apple juice is also very good with chelating, helps your liver and kidneys clear.