melanotic macule lip DermDx: Brown on labial melanotic macule upper lip

Prasad-Reddy L, Kerner D

Pharmacokinetic studies have demonstrated that dipeptides such as prolyl-hydroxyproline (Pro-Hyp) are absorbed intact into the blood and reach the skin and joints (Iwai et al., 2005)

Whether exact composition and supporting documentation are available

Analysis of posttranslational modifications of proteins by tandem mass spectrometry

Clinical signs of B12 deficiency include nausea, vomiting, loss of appetite, poor absorption of food (malabsorption syndrome), constipation, gas, weight loss, fatigue, lethargy, abdominal pain, and diarrhea

The flow is timed perfectly meaning there is little waiting time