Antioxidant
Antioxidants are chemicals that can help reduce oxidative damage and stress. Oxidative stress has been linked to the development of kidney stones. Oxidants can also contribute to aging and the progression of other diseases.
Myrrh is rich in powerful antioxidants. In one study [17], myrrh oil was shown to be a more potent antioxidant than vitamin E. Vitamin E is a strong antioxidant that is powerful at combating oxidative stress.
Myrrh oil has also been shown to confer some protection on the liver [18] from oxidative damage caused by lead. The level to which myrrh oil was effective was dependent on the amount given before lead exposure.
Neither of these studies was conducted in humans. Human studies are needed to understand how it should be used.