Primary Function: Sulbutiamine (isobutyrylthiamine disulfide) is a lipophilic derivative of thiamine, Vitamin B1. It is available over the counter in several countries, either as a dietary supplement or as a pharmaceutical. Arcalion (Sulbutiamine) is indicated for the treatment of patients with various medical conditions such as asthenia, chronic fatigue, diabetes, hypothyroidism, kidney disease, fibromyalgia, and depression (postpartum). It eliminates the symptoms of weakness by increasing focus, strength (both physical and mental) and energy, making you more alert, less lethargic and more optimistic, and helping to stabilize your sleep patterns. In addition, this medicine can also help the patient's memory and strengthen thought processes. Some patients have even reported minor improvements in vision.