The European Journal of Contraception & Reproductive Health Care
Chronic fatigue syndrome, itching and watery eyes, earache, nasal congestion, post nasal drip, sinus pressure/pain and throat clearing, shortness of breath, nausea, vomiting, diarrhea, abdominal pain, chronic pain, hives, itching, skin rash, headache, weakness, dizziness, allergic reactions to various food and drugs, nystagmus, tremors, recurrent arrhythmias, low blood pressure, syncope and near syncope, palpitations (postural orthostatic tachycardia syndrome) and anaphylactic shock are all possible symptoms
This means that it may play a role in helping prevent chronic conditions like heart disease and cancer ( Here are 9 signs and symptoms of vitamin B6 deficiency
In the rat hippocampus, a single dose causes a 1.4-fold increase in BDNF protein, a 1.6-fold increase in trkB phosphorylation, and a 3-fold increase in BDNF exon III mRNA (Dolotov et al., Brain Res 2006)
B12 plays a key role in converting food into energy, which helps counteract this side effect