Other more powerful ingredients include hyaluronic acid & glycerine
However, if the vial was exposed to temperatures above 30C or left at room temperature for more than 72 hours, request a certificate of analysis (CoA) from the supplier and consider running a pilot study to verify expected biological activity before committing to a full experimental series
These extremely rare side effects include: Reactive thrombocytosis during the first week of use in megaloblastic anaemia Hypersensitivity reactions including: rash, itching, exanthema, antibodies to HYDR0XOCOBALAMIN-transcobalamin II Anaphylaxis Hypokalaemia Headache, paraesthesia, tremor Irregular heartbeat (arrhythmias secondary to hypokalaemia) Nausea Vomiting Diarrhoea Fever, chills, hot flushes, dizziness, malaise, pain and / or swelling at the injection site Acne Abnormal colouration of the urine (chromaturia) B12 injections work quickly
The authors of one trial (95) included in the above-mentioned meta-analysis (89) noted that little cognitive decline was observed in the placebo group over their two-year trial, which may have limited their power to detect an effect of the B-vitamin intervention (95)
