b12 biotin injection IM Injectable at Philly IV Lounge lethargy and skin or coat issues Vitamin B-12 Injection, 1,000 mcg/mL

You may be vitamin B deficient if you experience some or all of the following unexplained symptoms: Skin cracks around the mouth Scaly lip skin Skin rashes Fatigue Anemia Depression or irritability Confusion Diarrhea or constipation Abdominal cramps Tingling or numbness in your feet and hands Vitamin B12 deficiency is particularly serious, as it increases your risk for neuropsychiatric disorders

However, taking extremely high doses may cause acne, rashes, or place stress on the kidneys in certain cases

Monitor blood glucose closely if using MK-677, which can raise fasting glucose by 5 to 15 mg/dL

Teens and adults should have 2.4 mcg of vitamin D, and the National Institute of Health recommends that pregnant women should have 2.6 mcg and breastfeeding women 2.8mcg