Hi All! Been self injecting hydroxo (preservative free from a compounding pharmacy) the past nine weeks, alternate days. During this time, l have slowly developed a red rash on the left side of my face and a little on my forehead. Now, the area is starting to swell. Worried that I have an allergy. I also take a B Complex and 2mg methylfolate orally daily. The B12 greatly helps my symptoms but I'm very concerned about this. Should l keep injecting? Anaphylaxis comes to my mind. I'm in Canada. Thank you all for your replies.