I started with Quercetin by Vital Nutrients and then my health food store was out so I tried another brand and let me tell you there is no way I will switch ... Quercetin by Vital Nutrients was so much better on my sensitive stomach!
Do not try the other guy ... your stomach needs the best ....Quercetin by Vital Nutrients!
This product is wonderful. Helps me to feel more balanced, has helped in the past with mast cell activation, but an added plus is I feel more energetic. I highly recommend this company as you are getting a great quality non-gmo product !