Supplements of activated charcoal and/or copper chlorophyllin may improve the quality of life of individuals afflicted with TMAU by helping their bodies to oxidize and convert TMA to the odorless N-oxide (TMAO) metabolite. Study participants experienced subjective reduction in odor as well as objective reduction in TMA and increase in TMAO concentration measured in their urine. The study's success rates varied:
85% of test participants experienced complete loss of detectable "fishy" odor
10% experienced some reduction in detectable odor
5% did not experience any detectable odor reduction.