Beta-mercaptolactate cysteine disulfiduria is a rare genetic disorder that affects the metabolism of sulfur-containing amino acids. Treatment for this disorder is largely supportive and includes dietary modifications, vitamin supplementation, and physical therapy. Dietary modifications may include limiting sulfur-containing foods such as eggs, dairy, and legumes, as well as avoiding foods high in sulfur-containing preservatives. Vitamin supplementation may include vitamins B6, B12, and folate, as well as other vitamins and minerals. Physical therapy may be recommended to help improve muscle strength and coordination. In some cases, medications may be prescribed to help manage symptoms.