Bacillinum (tuberculinum) is a homeopathic single ingredient remedy that works from the inside out to cure ringworm. It works for suspected as well as known carriers by causing the pet, who's harboring ringworm spores, to break with lesions that then heal. Bacillinum is a healthier and safer alternative than strong medications or chemicals. The potency is determined by the degree to which the original substance (called the Mother Tincture) has been diluted and successed. If a remedy is simply diluted, by mixing it in water, its potency stays the same. However, if this diluted mixture is successed (usually 100 times), IE held in one hand and rapped against the palm of the other hand, then its potency increases.