Determine the type of parasite you have to ensure that black walnut oil will be effective. Candida, tapeworm, ringworm and pinworm have all shown susceptibility to black walnut oil. You may need to see a physician to make this determination.
Consume the oil according to the directions on the label. Overdosing may cause the parasite to expel the toxins in its body and make you sick.
Decrease the dosage if you notice a rash on your skin. Increase the dosage gradually as the rash disappears.