Rare side effects include allergic reactions, dizziness, or headache
Other side effects can occur
I have IBS & microscopic colitis which can make a person unable to absorb B1 in the stomach
That being said, benzyl alcohol reacts better with more medications, while general antibacterial agents have been shown to cause negative side effects and adverse reactions in many substances and medications ( When Bacteriostatic Water Should Not be Used
Preclinical studies have administered 5-Amino-1MQ in rodent dietary models to observe whole-body metabolic parameters, including body composition, energy expenditure, and plasma metabolite profiles
It is being prescribed off-label to rev up a persons immune system, foster immune health. I will get to the adverse effects of these peptides later in the post