Haematological symptoms are among the earliest manifestations and include: Fatigue and generalised weakness Pallor due to anaemia (which may be macrocytic, though this is not universal) Shortness of breath on exertion Palpitations or tachycardia Neurological symptoms can be particularly concerning and may include: Peripheral neuropathy with tingling, numbness, or burning sensations in the hands and feet (paraesthesia) Loss of vibration sense and proprioception Ataxia and difficulty with balance or coordination Cognitive impairment, including memory problems and difficulty concentrating Mood disturbances, including depression and irritability In patients with diabetes, distinguishing between diabetic neuropathy and B12 deficiency-related neuropathy can be challenging, as both conditions may coexist
74 Gabapentin and pregabalin, both N-type calcium channel blockers, have been studied for opioid withdrawal, typically as augmentation of opioid agonists
However, they are also a powerful tool for improving stamina, building strength, and boosting athletic performance

Animal and cell studies show that quercetin can protect against oxidative stress in the brain and partially prevent the associated neuronal toxicity.[ref] Sirt3, Aging, and Mitochondrial Function: Quercetin also has beneficial effects in part through the SIRT3 pathway.[ref][ref] Lipedema: Quercetin is another antioxidant supplement that researchers suggest as being a likely candidate to help with lipedema.[ref] Nickel Allergy: In patients with known nickel allergies, quercetin supplements for three days before nickel contact decreased their reaction by more than 50%.[ref] Cold Sores: Quercetin has been shown in cell studies to lower herpes simplex virus infectivity.[ref] Hesperidin (full article) Hesperidin may work well for: Article: Increased TNF-alpha: Hesperidin, a natural flavonoid from citrus fruits, inhibits the release of TNF-alpha.[ref] Article: Lupus: Blocking TNF may benefit lupus patients with specific variants