Bacteriostatic water for injections does indeed go bad
Due to wide variations in study designs and methods, the analysis was unable to draw certain conclusions
Studies show that supplemental melatonin changes the composition of the gut microbiome, reduces weight, decreases fatty liver, and decreases low-grade inflammation.[ref] Another animal study showed that melatonin not only changes the gut microbiome but also improves the intestinal barrier and increases gastrointestinal motility.[ref] Viral and parasitic infections: Cardiomyopathy, caused by a viral infection (Coxsackievirus B3), is prevented by supplemental melatonin.[ref] Quite a few parasitic infections show improvement with melatonin including malaria, toxoplasmosis, and trypanosomiasis.[ref] Pretreatment with melatonin decreases the damage to the lungs in RSV infection.[ref] Melatonin may even help with the Ebola virus.[ref] Migraines: A randomized placebo-controlled trial showed that melatonin (3mg/night) for 12 weeks was superior to placebo for migraine prevention

Once done, place several bags of baking soda around your house, since baking soda effectively absorbs and neutralizes odors
However, a personal or family history of medullary thyroid cancer is an absolute contraindication