"Keep in mind that NO candy is safe for everyone. Having said that here are some varieties that are “safe” for a variety of allergies. Remember to READ THE LABEL every time, even if it’s a candy you’ve purchased previously. Many times, Halloween versions will contain different ingredients. Be Safe: All treats, No tricks!"
The above quote is from food allergy blogger Gina Clowes, of AllergyMoms.com about safe treats for all hallow's eve. Go get your candy on!