feeling worse after b12 injection Common & Rare Side Effects of Vitamin Injections Why Do I Feel Worse

Check the purity and additives Always check the chemical composition of your supplements to avoid consuming potentially harmful chemicals

While redness, swelling, muscle aches and sometimes low-grade fevers (temperatures under 101 degrees F) are typical side effects after receiving an influenza vaccination, there can be some rare and serious side effects including difficulty breathing and swelling around the eyes or lips

This is known as atrophic gastritis and results in ineffective transport and absorption of vitamin B12 from dietary sources[1]

Normal serum B12 ranges from 300-900 picograms per milliliter, but symptoms often begin below 400

10.3978/j.issn.2218-6751.2013.12.01 143 RehwinkelJ.TanC

Any standard insulin pen needle available from any pharmacy fits our pens, and we include a few starter needles to get you going