Quick answer
True glycine allergy is uncommon, but reactions can involve excipients, flavors, capsules, or blends; stop and seek care for hives, swelling, or breathing symptoms.
Label check
- Active ingredient and exact amount
- Inactive ingredients, capsule material, flavors, and colors
- Allergen statement and shared-facility language
- Sweeteners, sugar alcohols, gelatin, dairy, soy, gluten, or fish source