The vitamin can be stored in the liver for a long time, so it may take a few years for a deficiency to develop
Other clues: muscle aches, headaches, sluggishness, and difficulty shaking that post-party "blah" feeling.
Those who quit during week two or three never discover what their skin could have become
The buttock: Your upper outer buttocks, or Dorsogluteals, on either side of your body, are common injection sites
J Mol Histol 2007
Within the brain, DSIP is particularly abundant in the hypothalamus, hippocampus, and limbic regions, where it interacts with multiple peptide and non-peptide mediators, including corticotropin-like intermediate peptide (CLIP), adrenocorticotrophic hormone (ACTH), melanocyte-stimulating hormone (MSH), and melanin-concentrating hormone (MCH)