I take Claritin every day and have had no problems. Good quality essential oils help me a lot too with my allergies. I use what is called the "allergy trio": drops of lemon, peppermint and lavender oils into a diffuser. I haven't had the allergy headaches that I usually get. If you want to use them without a diffuser on the go, they make pretty diffuser necklaces that are like a locket and hold a felt pad to put the oil drops on.