Vasovagal refers to a condition in which there is a response from the vagus nerve that slows down the heart rate and drops blood pressure, causing someone to faint. Full definition
Spirinolactone is not a cure for vasovagal syncope, but should help in the severity and frequency of the condition. (wagwalking.com)
Less common causes include septicemia, alcoholism, diabetes, shock, kidney disease, vasovagal reaction, micturition syncope, anaphylaxis, and certain rare neurological syndromes such as Shy - Drager syndrome that damage the ANS, and Addison's disease. (drlam.com)