No. This product is not nightshades free as it lists 1 ingredient that contains nightshades.

Is Gefen Gluten Free Baking Powder with Kosher for Passover and All Year Round, 8 oz Nightshade Free?

No. This product is not nightshades free as it lists 1 ingredient that contains nightshades.
Nightshade Free? Gefen Gluten Free Baking Powder with Kosher for Passover and All Year Round, 8 oz | Spoonful