Swansons Stinging Nettle capsule supplement is and excellent product. It has many benefits to one's health; but the primary reason that I use it is that it helps to control histamine and cytokine activity in regard to my allergies. I don't do well with over-the-counter allergy medications. So, the stinging nettle has been an effective treatment for me. I use it along with Holy Basil, also known as Tulsi Basil, as an excellent control for my allergies. Together they also serve as a good anti-inflammatory as well. Stinging Nettle is also a good source for Vitamin B12. Since I am a vegetarian, that is also helpful for me.