It might be a bit much to take 37.5 mg of iodine while chelating.

Chelation with ALA results in most of the mercury excreted going through the bowels via the bile, while with DMSA more of the mercury is excreted in the urine. Chelating while you are constipated will make you feel very horrible. Taking probiotics, eating more fiber, taking msm, and taking licorice root will help relieve constipation. Many are constipated as a result of dysbiosis. Drinking more water will also help, as will taking more magnesium and vitamin c. Licorice root, cayenne pepper, and ginger will help increase bile flow, which will help decrease constipation and increase detoxification.

You should be taking much more B vitamins. Perhaps a B50 twice or 3 times a day. Fully formed vitamin A and not just carotene would also be a good idea.

I use 2 bottles of Kroeger Wormwood Combination for each of my one month parasite cleanses. I do this at least once a year. Others here claim good results with humaworm(only available at their website, humaworm.com). The Humaworm formula has some laxatives in it, but not large amounts of them. Any parasite cleanse with at least wormwood, black walnut green hull extract, and cloves will be good. Some formulas like humaworm add many other herbs. You can add raw garlic to help make the cleanse more effective.