If you are experiencing symptoms such as tingling or swelling in your lips and under your tongue, it could be an allergic reaction. It is important to try to identify the cause of the allergy so you can avoid it in the future. In the meantime, you can try gargling with cold water, sucking on ice, or eating frozen foods to help with itching and swelling. Taking an antihistamine like Benadryl may also provide relief, but be aware that it can cause drowsiness. If the symptoms persist, it is recommended to consult with a pharmacist for further evaluation and possible referral.