b12 tablets vs injections Vitamin vs. Supplements: Which Works Best? Vitamin B12 Intramuscular Injections Versus

Rather than remembering daily pills, patients receive periodic injectionsoften monthly or biweekly depending on individual needsproviding sustained B12 levels between treatments

Who Faces Elevated Risk: Several populations experience heightened B12 deficiency risk

However, absorption decreases significantly as doses increase, and individuals with compromised gut health may absorb only 1-2%

People taking medications that interfere with B12 absorption, including metformin or long-term acid-reducing medications, often benefit from injections

Initial correction of significant deficiency typically involves weekly or biweekly injections for several weeks until levels normalize and symptoms resolve