In homeopathic medicine, ledum is used first and foremost as a first-aid remedy to prevent infection. It is taken internally for:

bruises , especially bruises that are improved by the application of cold

insect stings, tick bites and animal bites

puncture wounds , cuts, grazes, and scrapes

black eyes and other eye injuries

Other homeopathic uses for ledum include the treatment of stiff and painful joints, especially when the pain begins in the feet and ankles and moves upward. Ledum is also used for sprained ankles. 

Since 1995, ledum has been touted as a homeopathic remedy for Lyme disease . Originally prescribed by a holistic veterinarian in Connecticut to treat the symptoms of Lyme disease in horses, dogs, and cats, ledum in the 1M potency is now recommended by some alternative practitioners as a treatment for Lyme disease in humans. There are several anecdotal reports of its success in treating this painful disease.

Dr. Stephen Tobin, DVM recommends the following treatment for tick bites : Three times daily for 3 days.