Oregano is used for respiratory tract disorders such as coughs, asthma, croup, and bronchitis. It is also used for gastrointestinal (GI) disorders such as heartburn and bloating. Other uses include treating menstrual cramps, rheumatoid arthritis, urinary tract disorders including urinary tract infections (UTIs), headaches, and heart conditions.

Cautions & Side Effects of Oregano:
Pregnancy and breast-feeding: Oregano is POSSIBLY UNSAFE when taken by mouth in medicinal amounts during pregnancy. There is concern that Oregano in amounts larger than food amounts might cause miscarriage. Not enough is known about the safety of oregano when used in medicinal amounts while nursing. Bleeding disorders: Oregano might increase the risk of bleeding in people with bleeding disorders.

Allergies: Oregano can cause reactions in people allergic to Lamiaceae family plants, including basil, hyssop, lavender, marjoram, mint, and sage.

Diabetes: Oregano might lower blood sugar levels. People with diabetes should use Oregano cautiously.

Surgery: Oregano might increase the risk of bleeding. People who use Oregano should stop 2 weeks before surgery.