"My 16yr old son had a bout of hives last year. Covered his arms, legs and body in large swollen itchy welts. Telfast 180mg stopped the itching and reduced the swelling, but we could still see the red welts. For almost a week he woke each morning with the welts raised and itching again. We couldn't identify anything different in his diet or environment. Two weeks later he had another outbreak, similar in intensity. But this time I realised that both times it happened after he had worked an 8hr shift at a charcoal chicken shop. He has worked at this shop for over a year, and eaten there with no problems. However, it was unusual for him to eat both lunch and dinner at work, and for him to choose chicken and chips, smothered in gravy, for both meals in one day. He read through the ingredients of everything used in the shop, and found that the 'chicken flavouring' added to the stuffing includes E635. This same chicken flavouring is mixed with salt and sprinkled on the chips. The gravy mix used also has E635, and the chicken flavouring is added to the gravy, so there's a double dose there. He has since avoided eating large quantities of E635, ie. he doesn't eat the gravy, he leaves the 'chicken salt' off his own chips, and he's careful to monitor the quantity of 'chicken flavour' added to the stuffing mix. He's had no hives at all since those two episodes. I'm very concerned that the shop owner had no idea that E635 could cause reactions, and that there is no real control over the amount of E635 in any one meal. E635 is in the 'chicken flavour' added to gravy, stuffing and salt. The 'chicken salt' is liberally sprinkled on chicken and chips. How much my son ate that day depends on who made up the gravy and stuffing, and who salted the chips, because there are no exact measurements." (Kiera)