maggot therapy – Some U.S. clinicians and patients are using FDA-cleared medicinal maggots to clean hard-to-heal wounds, citing precision, pain-free treatment, and benefits for people who can’t tolerate surgery—while critics point to limited high-quality data and insurance bar
When Polly Cleveland first saw the problem on her late husband’s left heel after a hospital stay in 2023, she knew something had gone wrong. The sore smelled “foul,” she said, and later he developed a bedsore on his buttocks.
The care team caring for Tom Haines had never heard of using maggots for wound cleaning. Cleveland, who said she has a lifelong interest in bugs, found a lab tied to a pioneer in modern maggot therapy and was able to order medicinal maggots overnight.
“You get this little vial with these teeny, tiny little maggots on a piece of gauze,” Cleveland said. She described placing them in the wound and said they worked quickly—leaving, after the treatment, “a dimpled, pink tissue, really nicely cleaned up.”
Medicinal maggots are considered FDA-cleared medical devices. They’re specially raised in laboratories to be germ-free, and they are the larvae of flies. They can also be sold in a sachet resembling a tea bag, so they can’t wander freely.
The idea is simple: diseased tissue has to be removed to help prevent infection. and maggots treat dead and dying tissue as food.. Dr.. Ronald Sherman. a retired assistant professor of medicine at the University of California. Irvine. and now the medical and scientific director at Cuprina. described how the larvae work inside wounds without biting.. “They do not have teeth.. They do not bite pieces from the tissue.. They secrete their digestive enzymes which dissolve the dead infected tissue in the wound. and so only that tissue melts away.. The healthy tissue stays behind.”
Sherman also said maggot therapy can help in situations where patients might not be good candidates for surgery. “You don’t need anesthesia, which is the greatest risk for people who are deemed poor surgical candidates,” he said.
For more severe infections, wound debridement is sometimes performed surgically, but Sherman said surgery can be less precise.. “Surgery tends to be a bit coarse. ” he said. adding that the scalpel has a straight edge and the dividing line between healthy tissue and dead tissue isn’t straight.. “The surgeon’s vision is limited to a macroscopic level, not a cellular level, not a microscopic level.”
This is where maggots, he said, can provide a kind of fine-grain cleanup that surgery can’t match.
At Tufts Medical Center in Boston. Lisa Baxter. the clinical director of the inpatient wound and ostomy care team. said her group uses maggot therapy once or twice a year. usually when patients can’t have surgery.. She described using it for people awaiting a heart transplant when wounds needed to heal first.. “We’ve had a couple patients awaiting heart transplant that had wounds that needed to be healed before they could get their transplant. so this is sort of a simple way to expedite the process. ” Baxter said.
Baxter also said the therapy depends on the bacteria present in the wound. She said maggots don’t like the bacteria Pseudomonas, a common cause of hospital infections. “We have to make sure that the wound does not have Pseudomonas in it,” she said.
The stakes were especially clear during the pandemic for Dr.. David Armstrong, director of the University of Southern California Limb Preservation Program.. He recalled a patient whose gangrenous foot surgery was canceled because of Covid. and who also had heart failure. diabetes. and peripheral artery disease.. “His feet were going to kill him,” Armstrong said.. To prevent further infection, he recommended home maggot therapy.
Armstrong said nurses visited the patient at home and he guided the process over a video call. He said the approach saved the man from losing more of his foot.
A key tension running through the story is that the treatment can be both carefully managed and hard to scale.. Baxter’s team is cautious about what bacteria is in the wound. while Sherman points to reimbursement problems and cost comparisons; at the same time. other surgeons say the evidence base and typical use remain limited.
The question of why maggots aren’t used more often is tied to money and to what medicine can prove.. “Maggot therapy is not adequately reimbursed by our system of medicine,” Sherman said.. He added that maggots cost less than an enzymatic debrider ointment commonly used for wound cleaning.. “You can probably buy enough maggots to treat one or two wounds for $400,” he said.. By comparison. Sherman said the ointment—which he said is covered by insurance—costs around $450 for a week’s supply and can take more than 12 weeks to fully clean a wound.
Not everyone is convinced the therapy should become a routine tool.. Dr.. Sameer Patel. chief of plastic and reconstructive surgery at Temple University Hospital and Fox Chase Cancer Center in Philadelphia. said wound management already has many available options.. “This is not what one would consider by any means standard of care,” Patel said.. “The case reports and the things that we see in the literature [on maggot therapy] are very unique situations.”
Patel said there isn’t enough high-quality data to support wider use of maggot therapy. “Do I think it’s ever going to become a widespread modality? No, I don’t think that’ll happen,” he said.
Then there’s the “yuck factor.” Sherman said he’s seen situations where patients were willing. but the prescribing doctor would not provide the treatment.. “He’s been seeing patients who would get a prescription for the maggots. but the doctor wouldn’t do it. ” Sherman said.. “In those cases, it’s usually because they’re maybe grossed out by it.”
Larry Way. 71. of Malden. Massachusetts. said he eventually overcame the grossness after being hospitalized at Tufts Medical Center for a severely infected wound in 2021.. Baxter said Way “failed anything that we tried and was quite ill. ” and that he was “actually probably going to go to hospice and die within a couple of weeks because we couldn’t fix this wound.”
Way said he was “maybe a little concerned,” but decided it was worth trying to save his life. He said the treatment was painless, and that it worked.
The end result in Way’s case, and in Cleveland’s description of Haines’ wounds, is a cleaner wound bed after something many people never expected to see in a clinic: a small vial of live larvae placed directly on gauze.
maggot therapy medicinal maggots wound care debridement Pseudomonas FDA-cleared medical devices Tufts Medical Center insurance reimbursement