Eateries sent free information on food allergies.
Sufferers can experience a range of reactions such as coughing, wheezing, shortness of breath, swelling of the lips and even anaphylactic shock which can be fatal.
The pack, developed for the region by Central England Trading Standards Authorities, aims to helps businesses minimise accidental contamination and gives them advice on how to deal with customers' queries about food allergies.
Allan Harwood, principal trading standards officer, said: "We have sent out 775 allergen packs to catering establishments in Coventry. Although the approach has differed in the way the pack has been used across the region, it is a measure of the idea's success that we have been able to reach so many businesses in such a short time.
"Feedback so far has been positive and if even one allergic attack is avoided, it makes the effort worthwhile."
Any business wishing to obtain a pack should phone 0845 330 3313.