Oral supplements are an option, but injections provide faster and more effective absorption by delivering vitamins directly into the bloodstream, bypassing the digestive system
A provider will typically: Ask about your symptoms and medical history Request a recent blood test to check B12 levels Evaluate whether injections are appropriate If B12 shots are recommended, the provider can issue a prescription, which you can fill at a local pharmacy or through a telehealth pharmacy that ships to you
Symptoms may include: Shortness of breath Red, flushed skin Headaches Rapid weight gain, polycythemia (increased red cell mass), hypokalemia, CHF, pulmonary edema, and vascular thrombosis are mostly observed in therapeutic contexts where vitamin B12 is administered aggressively or over extended periods
Dosage Instructions For 4 mg doses, fill the syringe to the 4-unit mark