thank you and pleased to answer you Causes of swollen lips on Morning The causes are very varied and of different types Allergy is the most implicated, allergy of contact with a product or allergy following the consumption of a product. Injuries Side effects of certain drugs Allergic reactions to excessive heat or cold Viral infections (herpes) Nutritional deficiencies Improper alignment of teeth Different therapeutic modalities: Applying ice cubes wrapped in a towel is more effective regardless of the cause of the swelling. Hot compresses reduce the accumulation of blood in the inflamed area. Aloe vera gel reduces swelling. Tea bag application is also effective. Drinking plenty of fluid helps moisturize the lips and keep it from drying. A balanced and healthy diet, rich in vitamins B and C to avoid nutritional deficiencies. In case of allergy, it is necessary to determine the cause and avoid it later, and to treat with antihistamine medicines (tablets and creams) Drink a sufficient amount of water to keep the lips hydrated. may this help you and best wishes.