Any site inviting you to buy vitamin b12 injectable online with no prescriber in the loop is selling either an unlicensed product or an unlawful one, and a clinic that relies on it inherits that risk
A deficiency of vitamin B12 can also cause shortness of breath or heart palpitations, as well as gastrointestinal symptoms including constipation, diarrhea, appetite loss, or gas
Commercial production was discontinued in 2008, although the compound remains available through certain compounding pharmacies with a valid prescription (1)
[6] [3] [10] A mild deficiency may not cause any discernible symptoms, but moderate deficiency can cause various symptoms, such as feeling tired, lightheadedness, headaches, cold intolerance, pale skin, sore tongue, upset stomach, loss of appetite, hair and skin color changes, numbness or tingling (pins and needles) of the fingers and toes, and tinnitus, and vision, cognitive or psychological problems