LEVAMISOLE IS THE ACTIVE LEAVO-ISOMER OF TETRAMISOLE, USED AS AN ANTHELMINTIC AND ADJUVANT IN MALIGNANT DISEASE. IT STIMULANT EFFECT ON THE DEPRESSED IMMUNE RESPONSE MIGHT BE USEFUL. IT IS ACTIVE AGAINST INTESTINAL NEMATODE WORMS AND APPEARS TO ACT BY PARALYSING SUSCEPTIBLE WORMS WHICH ARE SUBSEQUENTLY ELIMENATED FROM THE INTESTINES.