Supplement Authority strives to offer the highest quality organically grown, non-GMO products available and exclusively uses low temperature drying techniques to preserve all the vital enzymes and nutrients. Our Stinging Nettle passes our strict quality assurance which includes testing for botanical identity, heavy metals, chemicals and microbiological contaminants. Supplement Authority offers Organic Stinging Nettle Capsules packaged in airtight stand-up, resealable foil pouches for optimum freshness. Once opened, just push the air out of the pouch before resealing it in order to preserve maximum potency. Keep your Organic Stinging Nettle Capsules in a cool, dark, dry place.