Haematological symptoms typically appear first and include fatigue, weakness, and pallor due to megaloblastic anaemiaa condition where the bone marrow produces abnormally large, immature red blood cells that function poorly
Whether copy number variations, nucleotide polymorphisms, or functional mutations of equine -defensins influence health or performance of horses is unknown
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)
Aliment Pharmacol Ther 45:313
Legs and muscles feel stronger: For those dealing with b12 injections for weakness in legs, restored B12 can mean feeling steadier and more physically capable again
