doi:10.1159/000507370 8
slow injection and site rotation may reduce local irritation
In instances of pernicious anaemia, bariatric surgery, severe malabsorption, inflammatory bowel disease involving the ileum, and substantial neuropsychiatric symptoms, vitamin B injections are highly recommended
Vitamin B12 Injection Side Effects Potential side effects associated with vitamin B12 injections can include the following: Allergic reactions such as facial swelling and skin rash
Decrease dose consideration: Persistent side effects including headaches, fatigue, or injection site reactions, excessive response (extremely rapid weight loss suggesting dose may be higher than needed), cost concerns when lower doses might achieve similar results
| | Intensive Performance Protocol | 10mg subcutaneous, 5x/week (weekdays) | 150mg oral, daily | Both compounds AM, pre-training | 6 weeks on, 4 weeks off | Athletic performance research, substrate utilization studies, endurance capacity trials | Higher dosing frequency and dose intensity produce more pronounced short-term shifts in RER and VO2 max, but require stricter adherence and increase washout sensitivity
