It's used to treat or prevent iron-deficiency anemia
Can J Physiol Pharmacol
B12 injections are injected into the muscle and dispersed over time, bypassing the digestive tract, so you get much higher absorption than you would orally
Valve implemented other factors to heighten the feeling of immersion, such as preventing the player from seeing or hearing their own character, who remains a silent protagonist throughout the game, and ensuring that the player rarely loses the ability to control Gordon, even during monologues
(3) Dalmasso G, Charrier-Hisamuddin L, Nguyen HT, Yan Y, Sitaraman S, Merlin D
This argument hinges on the understanding that dehydration can lead to a concentration of alcohol in the blood, potentially pushing BAC readings over the legal limit