Has anyone else got this? I am being investigated for it following excessive use of chemicals containing it. I react to exhaust fumes/smokers/new buildings as well as a walk about at Ikea. I am also a diagnosed Coeliac and found the same symptoms appear from Hydroxypropylmethylcellulose HPMC in the Gluten Free diet and Hypromellose in prescribed medications. I suffer Anaphylaxis and Urticaria with this and need to take up to 6 Piriton daily for up to 12 days. However so far this is not Topical only Oral.