Collagen type II is POSSIBLY SAFE when taken by mouth in doses up to 2.5 mg daily for up to 24 weeks. Itâs not clear what the side effects might be. Other collagen products, such as bovine collagen and gelatin, have caused allergic reactions.
Puffy lips are often the result of allergic reactions. These allergic reactions can lead to a condition that causes short-term swelling to occur beneath the surface of the skin, a condition known as angioedema. Puffy or swollen lips may also be caused by other conditions, such as an infection, injury, or certain hereditary conditions.
Frey's syndrome: Introduction. Frey's syndrome: A rare condition where the ears and/or cheeks become flushed or sweaty upon eating spicy, hot or bitter substances or chocolate. Injury to the facial nerve near the parotic gland causes the condition. More detailed information about the symptoms, causes, and treatments of Frey's syndrome is available below.