Our Vitamin C Gummies Pectin is sourced from multiple fruits such as Citrus and Apple so we cannot guarantee zero grapefruit since it is a citrus. However, that would be the only ingredient in our product where it could be found.
I hope this answers your question. Feel free to reach out directly to us if you have any more questions.
Thank you for contacting Lunakai and have a nice day.
Warmly,
Bella D.
Lunakai Customer Service Manager
Nashville, TN, USA