Iverheal 12mg cannot be used as a prophylactic against all of these infections and does not work against adult worms. To prevent the spread of infections (for example, scabies), wash your clothes and bedding frequently in hot water and store all non-washable items in a tightly closed plastic bag for at least 3 days. Cut your nails frequently. People who come into contact with you (for example, friends, family, and relatives) should also visit the doctor as soon as possible as a safety measure.