can b12 injections affect periods b6 and hcg Dr. Aruna Ashok explains how your menstrual cycle whether Symptoms of B12 deficiency in

Your doctor may recommend taking a supplement with a variety of water-soluble vitamins, including B12, if you have kidney disease, especially if you have risk factors for becoming B12 deficient

How do you feel

Adults usually get 100 mcg monthly, but this can change based on individual needs and the doctors advice

Older adults also face absorption issues like less intrinsic factor production and might need higher dosages

Intramuscular and intravenous delivery bypasses the gastrointestinal tract, achieving significantly higher bioavailability than oral supplementation, making injectable micronutrients a clinically effective option for patients with confirmed or suspected deficiency, malabsorption conditions, or chronic illness

When B12 levels are low, symptoms like brain fog, irritability, low mood, and difficulty concentrating often follow