However, you should: Call 999 or go to A&E immediately if you experience signs of a severe allergic reaction (difficulty breathing, severe throat/facial swelling, or collapse) Contact your GP if you experience a rash, itching, persistent pain at the injection site, or worsening neurological symptoms despite treatment If you suspect any side effects from your B12 injections, you can report them through the MHRA Yellow Card scheme (yellowcard.mhra.gov.uk)
References: Cleveland Clinic
Validated assay content: 10.26 mg with purity greater than 99.8 percent
Rare allergic reactions (particularly in individuals sensitive to sulfa, due to methionine)
We understand that timing and product integrity are critical for research
Our team always uses a new, sterile needle and syringe for each injection