Biotech Nutritions Pure Corydalis Dietary Supplement 10:1 Extract

What the brand says

Sold as “Biotech Nutritions Pure Corydalis Dietary Supplement 10:1 Extract 1000 mg 120 Count (Pack of 4)”

Corydalis (Yan hu suo) is an herb used in traditional Chinese medicine often for pain relief. Recent sturdies shows that it can be used for headaches, menstrual pain, pain triggered by cold and back pain including back pain caused by nerve or muscle problems.