Yes! We believe this product is nightshade free as there are no nightshade ingredients listed on the label.

Is Allergy Research Group ButyrEn -- 100 Delayed Release Vegetarian Capsules Nightshade Free?

Yes! We believe this product is nightshade free as there are no nightshade ingredients listed on the label.
Nightshade Free? Allergy Research Group ButyrEn -- 100 Delayed Release Vegetarian Capsules | Spoonful