OTC pain relievers for discomfort When injection site reactions cause pain, tenderness, or significant discomfort, over-the-counter pain relievers provide additional relief
Vitamin B12 is water soluble, meaning as long as you are taking "prescription-grade" drops, you do not have to worry that the levels are going to be diluted as they pass through your bloodstream

Rare: may affect up to 1 in 1,000 people Acniform and bullous eruptions (acne-like and blistery skin eruptions) Not known: frequency cannot be estimated from the available data Headache, dizziness Nausea (feeling sick), vomiting, diarrhoea Malaise (feeling unwell) Rash, itching Injection site reactions including injection site pain, injection site erythema, injection site pruritus, injection site induration, and injection site swelling (Reactions at the site of the injection) Exanthema (a widespread skin rash) Chromaturia (unusual coloured urine) Fever Hot flushes (a feeling of intense heat with sweating and rapid heartbeat) Chills (feeling of coldness accompanied by shivering) Paraesthesia (feeling of pins and needles) Tremor (tremble or shakes) Hypokalaemia (decreased potassium levels in the blood) Reactive thrombocytosis (body produces too many platelets) Reporting of side effects If you get any side effects, talk to your doctor, pharmacist or nurse

The Pernicious Anaemia Society is getting frequent worried phone calls from members desperate that their B12 injections have been postponed due to the coronavirus crisis
The vitamin is involved in the production of neurotransmitters, which can help balance mood, improve focus, and even alleviate symptoms of depression
Highdose IV protocols (5001,500 mg daily for ~10 days) have been used in openlabel studies for substance use disorder, with reports of reduced cravings and improved mood in followups [2] [9]