Real change takes weeks of consistency, not one high dose before an event
As yet, the physiological significance of this process is difficult to evaluate, although it has been noted that the abundance of potentially reactive cysteines in chloroplast proteins is far from negligible (Zaffagnini et al., 2012)
Supplementation aside, you should always aim to get the majority of your nutrients from food sources, but when it comes to vitamin B12, that's definitely easier said than done, especially for those following plant-based diets free of all animal products
It involves injecting the drug directly into the muscles, much like a vaccine
Don't take leucine if you have maple syrup urine disease, as your body can't break down amino acids