Hypersensitivity to sodium tetradecyl or any component of the formulation. Arterial disease, acute thrombophlebitis. Valvular or deep vein incompetence, phlebitis migrans, cellulitis, acute infections. Bedridden patients. Uncontrolled systemic disease such as diabetes, toxic hyperthyroidism, tuberculosis, asthma, neoplasm, sepsis, blood dyscrasias, and acute respiratory or skin diseases. Huge superficial veins with wide open communications to deeper veins. Allergic conditions. Varicosities caused by abdominal and pelvic tumors (unless tumor removed).