Changes in heart rate that could be risky for people with certain arrhythmias
It correlates with basicity, which measures the extent to which a molecule with lone pairs can react with an acid (Bronsted or Lewis)
Zinc Zing: Strengthens your bodys defenses and speeds up healing, giving B12 an edge for post-workout or illness recovery
The combined result is nausea, stomach pain, vomiting, and for many people, hangover diarrhea that compounds fluid and electrolyte loss

B12 has many functions in our body, so unfortunately a deficiency will give rise to a wide variety of symptoms, like brain fog, memory problems, cognitive impairment, insomnia, headaches, especially migraine, behavioural changes, learning problems, nominal aphasia, mood swings, irritability, depression, anxiety, hallucinations, delusions, psychosis, peripheral paraesthesia (pins and needles), numbness, neuropathic pains, poor balance, reduced vibration sense or proprioception (joint position sense), tinnitus, ataxia, taste impairment, sometimes myelopathy, fatigue, anaemia (either with larger red blood cells, or with normal size of the red blood cells when there is also iron deficiency), other reduction in blood cells, abdominal complaints, malabsorption, failure to thrive, weight loss, diarrhoea, hyperpigmentation, glossitis, (aphthous) stomatitis, infertility, urinary tract infections, joint and muscle pain, muscle weakness, spasticity, seizures, cardiomyopathy, urinary and/or faecal incontinence, postural hypotension/dizziness, erectile dysfunction, to name a few

doi:10.1007/s00431-005-0033-8