The main difference is how and how often theyre taken
This injectable form is especially useful for patients who cannot take oral medication due to vomiting, surgery, or critical illness
Contact your GP if palpitations: Occur frequently or last longer than a few minutes Are accompanied by chest pain, tightness, or pressure Cause dizziness, light-headedness, or fainting (syncope) Are associated with shortness of breath at rest or on minimal exertion Occur alongside significant fatigue or weakness Develop in someone with a known heart condition or family history of cardiac arrhythmia Occur during pregnancy (contact your midwife or maternity triage service promptly) You should call 999 or go to A&E immediately if palpitations are severe, sudden in onset, and accompanied by chest pain, collapse, or difficulty breathing, as these may indicate a serious arrhythmia such as ventricular tachycardia or supraventricular tachycardia (SVT)
Methylcobalamin might be preferable for people with absorption issues or certain medical conditions like pernicious anemia
Neuropathy or neurological disease: Although evidence is mixed, injections are often given when deficiency is linked to nerve pain or cognitive symptoms