Flat River's Broad Spectrum oil, Every batch is third party tested to ensure our tinctures are devoid of GMO’s, solvents, pesticides, heavy metals, chemicals and herbicides. Using the calibrated dropper, place 1/2ml of tincture under the tongue for 10-15 seconds then swallow. This recommended serving will deliver 16.5mg of broad spectrum CBD. Using twice daily at this rate, each one ounce bottle will last 30 days. This product contains no THC.