Nightshades are a group of plants that include tomato, pepper, tobacco, potato, and several other commonly consumed plant products. While most people have no issues whatsoever consuming these plant products, some do. Our Vitamin K2 is sourced from several plant sources that may include plants from the nightshade family. All warnings sound somewhat ominous but this warning is just to give nightshade-sensitive people a heads up. That's all.
We've had many customers who are nightshade-sensitive take this product regularly for years without any issues. This is because the process of purifying the Vitamin K2 molecule removes virtually all allergens. Therefore, even those who are sensitive do not have a noticeable reaction. Having said that, it is impossible to know how you'd react to the product if you are highly sensitive to nightshades. If you're concerned, please work with your doctor to assess your situation. For those unable to take Vitamin K2 supplements, we have articles on our site that identify foods rich in K2.