Antihistamines

Antihistamines

Antihistamines may contain mammal-derived ingredients, including gelatin or lactose. Some contain magnesium stearate which is usually plant-derived but which less commonly may be mammal-derived. Liquid antihistamines may contain carrageenan, which is derived from red algae but which also contains the alpha-gal linkage.

Learn more about mammal-derived pharmaceutical ingredients and the variable and often unknown risks they may or may not pose to patients with alpha-gal syndrome here.

H1 antihistamines

Learn more about animal-free H1 antihistamines from VeganMed:
https://www.veganmed.org/post/vegan-friendly-allergy-meds

H2 antihistamines

Learn more about animal-free H2 antihistamines from VeganMed:
https://www.veganmed.org/post/is-pepcid-vegan