Special situations and common questions What not to do after a B12 injection if youre on blood thinners If you take warfarin, a direct oral anticoagulant, or other medications that reduce clotting, tell the clinician before the shot
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B12 Injections: Are they more effective than supplements
These may include: ( 4 ) Fatigue or lack of energy Brain fog or trouble concentrating Irritability or mood swings Pale skin or shortness of breath Tingling in the hands and feet Difficulty walking or staggering Anemia Swollen or inflamed tongue A B12 deficiency in men may also contribute to low testosterone, weight gain, and poor exercise recoverymaking it a hidden factor in many mens health concerns
Low red blood cell counts may indicate deficiency