Opioid food peptides

Opioid food peptides are opioid peptides found naturally in food. They include:

• Casomorphin (from milk)
• Gluten exorphin (from gluten)
• Gliadorphin/gluteomorphin (from gluten)
• Rubiscolin (from spinach)
• Soymorphin-5 (from soy)
• Oryzatensin (from rice)