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Journal Clinical Pharmacology 56 (6), 635638

These meds can lower your bodys B12 levels by affecting absorption, so you might need to take a B12 supplement to keep those red blood cells in tip-top shape

Here are some key points to consider: - Immediate Benefits: If you're feeling drained or low on energy, B12 shots can provide an almost immediate pick-me-up as they bypass the digestive system

Symptoms of B12 deficiency A vitamin B12 deficiency may go undiagnosed because many of the symptoms fatigue, weakness, constipation, loss of appetite, and weight loss mirror those of minor illnesses or chronic conditions, Nelson explains