Tripathi R, Gupta S, Rai S, et al.
This small trial from India tested a skin lotion combining EDTA with methylsulfonylmethane (MSM) on lower-leg pitting edema, the kind of swelling often seen with chronic venous insufficiency. The researchers added MSM because they believed it would help EDTA cross cell membranes. The goal was to reduce swelling by lowering oxidative stress, not to remove heavy metals.
In phase 1, 13 adults aged 40 to 70 completed the study: 8 used the MSM+EDTA lotion and 5 used a plain vehicle lotion for 2 weeks. In phase 2, 4 patients used MSM alone for a week, paused for a week, then used MSM+EDTA for 2 weeks. Calf, ankle and foot circumference were measured, along with blood markers of oxidative stress (FRAP and MDA).
The authors report that calf, ankle and foot circumference fell significantly after 2 weeks with MSM+EDTA but not with placebo. In the full text, right calf circumference dropped 4.13% and right ankle 6.85% (p=0.0005 each); the left calf change (3.84%) was not statistically significant (p=0.2). Blood MDA, a lipid peroxidation marker, fell roughly 21–29%. MSM alone increased swelling.
Bottom line — This is a very small, short pilot trial (13 patients in the main comparison, 4 in the second phase) published in a lower-profile journal, and it has not been replicated. It looked at leg swelling and oxidative stress markers, not heavy metal levels, so it says nothing about whether topical EDTA removes metals from the body. Treat it as an early, interesting signal that would need larger, independent trials to confirm.