It depends on your baseline levels, your symptoms, and what your body is trying to accomplish
Diagnosed Deficiency or Malabsorption if you have a confirmed deficiency in a vitamin that affects appetite (like B1, zinc, or iron) or a condition that impairs nutrient absorption (such as certain digestive disorders or post-surgical states), vitamin injections can be highly beneficial
It may help reduce acne breakouts due to its antioxidant and detoxifying properties
In reproduction, melatonin and related peptides scavenge reactive oxygen species in follicular fluid and seminal plasma, protect mitochondrial DNA, and reduce gamete membrane lipid peroxidation
You should seek medical attention if you develop swelling of the lips, throat or tongue, hives, difficulty breathing, fever, chills, or if lumps under the skin are raised, red, draining pus, warm to the touch, or severely painful