More data about the leaf needs to be collected and evaluated before any conclusion is made about any significant side effects. Fruit is safe to consume when used appropriately. Safe to consume when used appropriately. Continued use on same area may cause damage to sensitive nerves. Some authorities feel it should not be applied externally only for 2 days with 14 days in-between.
Some authorities cite studies where continuous use was necessary to be effective.
These studies did not conclude there was any harm in more extended use. Garlic Alium sativum Occasional gastrointestinal disturbance in sensitive individuals. Some authorities feel that consumption of fresh garlic in children might be dangerous and possibly contraindicated in pregnancy. The long history of garlic as a food has established it to be safe in reasonable quantities. These warnings may not apply to processed garlic products.