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Jones 1,2,* Received: 04 December 2025 Revised: 29 December 2025 Accepted: 08 January 2026 Published: 12 January 2026 2026 The authors
However, some rare side effects of too much vitamin B12 can include: Headache Weakness Nausea Diarrhea Tingling sensations in the hands and feet Allergic reactions or skin rash (uncommon) When To Seek Medical Advice Risk of vitamin B12 deficiency: Groups at a higher risk of vitamin B12 deficiency include older adults, people who only eat plant-based foods (vegans and vegetarians), and those with certain chronic conditions (gastrointestinal disorders that can affect vitamin absorption)
Others, like sermorelin, exist as FDA-approved formulations through specific compounding pharmacy channels, which are separately regulated
Overview of Epitalon Highly Bioactive Pineal Tetrapeptide With Promising Properties
Br J Dermatol 2014
