Side effects associated with boswellia include vomiting and stomach irritation, according to WebMD. Boswellia, also known as Indian frankincense and blessed thistle, is considered to be likely safe for most people.
Boswellia has been used since the Middle Ages as a tonic for monks and as a remedy for the bubonic plague, claims WebMD. Today, people drink boswellia in tea and use it to treat a number of conditions including indigestion, loss of appetite, diarrhea and fever. It is also used as a way of increasing urine output and to promote the production of breast milk in women who have recently given birth. There are also people who use boswellia on the skin to treat wounds, boils and ulcers.
Since boswellia is an herbal supplement, as of 2015, there have not been studies to determine how useful it is for different ailments, explains WebMD. What is known about boswellia, however, is that it may interfere with certain medications. Antacids, for instance, may not work with boswellia since boswellia tends to increase the amount of acid in the stomach. Pregnant women should not use boswellia as it has not been determined as safe. Those who suffer from conditions such as Crohn's disease, intestinal infections or allergies to ragweed should also refrain from using boswellia.