can you overdose on b12 injection Symptoms of Overdose: Causes and When to Seek Help – Bolt Pharmacy Benefits of Vitamin B12 Shots

A burning or sharp pain during injection (this may indicate you've hit a blood vessel or muscle) Medication leaking out of the injection site Injection site reactions like bruising, swelling or redness that worsen after the injection Shortness of breath call 911 if this occurs The medication isn't having its intended effects, such as reduced appetite

Oral supplements can help you maintain proper levels of nutrients

Using the same needle can lead to increased risk of infection and pain

The results can differ, but many notice better stamina and less hunger almost right away

Just be aware that there is high altitude (in Puno and Cusco) and some walking involved