Glutathione: Uses, Side Effects, Precautions and Dosage Glutathione Benefits for Your Skin and Side Effects Dr Sabrina The Food and Drug Administration (FDA) warns the public on the dangers associated with the use of injectable lightening agents such as glutathione and Vitamin C. In the Philippines, several health and Glutathione deficiency can lead to a variety of signs and symptoms that affect your overall health. Here are some common signs to look out for: 1. **Increased Dark Spots** Glutathione