Most people consume more vitamin B-12 in their diet. It is found in animal-derived foods such as milk, yogurt, cheese, beef, eggs and fish, as well as most fortified breakfast cereals. But there is always the possibility of developmental defects. This is especially true for the elderly, vegetarians and people with gastrointestinal diseases, including Crohn's disease and celiac disease. So you may find a diet that needs to be supplemented with vitamin B-12. As with most supplements, this vitamin is generally considered safe when taken in the recommended daily allowance. If you have side effects, talk to your doctor.
A woman is receiving an injection. (Source: DragonImages / iStock / Getty Images) Cardiovascular problems
Strange feelings Your left arm feels may be a manifestation of cardiovascular problems. When injected intravenously, vitamin B-12 is associated with a sudden increase in congestive heart failure and blood pressure, as well as pulmonary edema and peripheral vascular thrombosis. For example, heart failure increases the risk of thrombosis. If a clot blocks blood flow through the coronary arteries, it can cause a heart attack. Seek medical attention immediately.
Allergic reactions
Some people are allergic to vitamin B-12, which can cause adverse reactions when injected into the body. Due to allergic reactions, you often get redness, pain and abnormal warmth in the attachment when shooting. At the same time, you may also have other symptoms common to allergies, such as difficulty breathing, shortness of breath, swelling of other parts of the body or even urticaria. Contact your doctor immediately.
Neural Response
If the strange sensation in your arm is related to numbness, tingling or weakness after B-12 injection, you may experience a nerve reaction vitamin. Although worrying, these side effects are not as serious as cardiovascular problems or allergic reactions and should fade over time. No matter how mild your symptoms are, consult your doctor whenever you have any unusual symptoms.
Stimulation
If the injection site has a strange feeling, it may be just a slight needle piercing the muscles and skin. You may notice that some emotions can also turn red and red in the surrounding area. It is unlikely that medical treatment is needed, but please tell the doctor safe.
