Your peptide could be contaminated by the second or third injection
They activate different second messenger systems
Can You Get Too Much B12
[2] Maternal deficiency increases the risk of miscarriage, neural tube defects, and delayed development in offspring
However, a deficiency might indicate more serious health issues and is usually accompanied by mild side effects such as diarrhea and headaches
Contact your GP if you experience: Unexpected symptoms after starting B12 supplementation, including persistent skin reactions, gastrointestinal disturbance, or mild allergic manifestations Neurological symptoms such as significant tingling, numbness, weakness, or balance problemsthese may indicate B12 deficiency paradoxically, or alternative neurological conditions requiring assessment Unexplained fatigue or malaise that develops or worsens despite supplementation Concerns about medication interactions , particularly if taking metformin, proton pump inhibitors, or other medications affecting B12 metabolism [2] [4] Seek emergency medical attention (call 999) if you develop signs of a severe allergic reaction following B12 injection, including facial swelling, difficulty breathing, or widespread urticaria