If side effects do occur, they are generally mild and may include: Pain, discomfort, swelling, or redness at the injection site Diarrhea Headache Bloating Nausea Numbness or tingling Serious side effects are rare and may include: Confusion Dizziness or fainting Muscle pain, cramps, or weakness Extreme thirst Facial flushing Frequent urination Palpitations Fatigue Difficulty breathing Coughing or noisy breathing (wheezing) Extreme pain, swelling, warmth or tenderness in one leg Difficulty swallowing Rash Itching over the body If you experience serious side effects, contact your doctor right away
If injection volume is a limiting factor, rotate injection sites and administer compounds sequentially at different sites rather than combining them in one syringe
This is problematic because vitamin B12 deficiency can cause permanent neurological effects
Older adults can use this site if the muscle in their upper arm, their deltoid, is well developed
41 Hvas, A.-M., Juul, S., Lauritzen, L., Nex, E