Psyllium (Planatgo Spp.)

An interesting finding to watch out for:

Mostly, there are described cases of occupational allergy that handle Plantago ovata seeds in powder laxatives and some cases of anaphylaxis after eating products containing psyllium.

Psyllium. IgE mediated hypersensitivity

Anaphylactic Shock Due to Psyllium (Plantago ovate Seed) Allergy: A Case Report

Anaphylactic reactions to a psyllium-containing cereal