Theophylline has other effects in the respiratory system that are important to its clinical efficacy
While your body produces its own supply in the liver, your levels can be influenced by many factors

10 Amitriptyline side effects, each category lists adverse effects that are very severe and some less severe 1,2,6,7 (please note, this is not a complete list) Black box warning: for increased suicidality and clinical worsening of depression 6,7 Birth Defects Cardiac events: heart attacks, stroke, hypertension, tachycardia, palpitations CNS and Neuromuscular: coma, seizures, hallucinations, delusions, mania, hypomania, confusion, disorientation, loss of muscle coordination or control, tremors, neuropathy (nerve pain), numbness, tingling, involuntary movement disorders, excitement, anxiety, insomnia, restlessness, drowsiness, nightmares, weakness, headache, dizziness, tinnitus, and others Anticholinergic: blocked (paralyzed) intestines, urinary retention, constipation, blurred or other vision disturbances and changes in the eyes, dry mouth Hematologic: decreased red blood cells and loss of bone marrow function, decreased white blood cells (leukopenia), decreased platelet count resulting in unusual bleeding, bursting blood vessels (purpura), abnormal increase in certain white blood cells which are associated with inflammation, allergies, infection, asthma, rashes, trouble breathing, swelling, and certain cancers Gastrointestinal: liver damage, hepatitis, nausea, vomiting, anorexia, peculiar taste in the mouth, diarrhea, black tongue Endocrine: enlarged breasts and testicles in males, secretion of breast milk and enlarged breasts in females, increased or decreased libido, impotence, blood sugar dysregulation Other: weight gain or weight loss, increased urinary frequency, excessive perspiring, hair loss (alopecia), swelling in the feet, ankles, or other body parts

White tomato carotenoids, glutathione, and Vitamin C are all referenced in the scientific literature as compounds relevant to brightening, antioxidant support, and pigmentation management