Several factors contribute to it: High research and development costs: These medications required years of research, clinical trials, and safety testing, which collectively cost manufacturers billions of dollars before they were approved
Track training performance, how many reps you can do on key lifts and day to day energy
In addition, oxytocin naturally decreases our stress hormone, cortisol, and when cortisol is low, our levels of progesterone are naturally higher, giving us more energy
Injections deliver B12 directly into your system for immediate use, making them a highly effective solution
Talenezhad N, Mohammadi M, Ramezani-Jolfaie N, et al
Further Reading: What are the best weight loss supplements