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The key takeaways about B12 shots vs IV infusions center on matching the delivery method to your specific health needs: B12 shots deliver a single nutrient via intramuscular injection, making them ideal for routine maintenance and diagnosed deficiencies at a lower cost per session
If you have a vitamin B12 deficiency, a doctor may prescribe B12 injections every other day for 2 weeks until your symptoms improve
The evaluation of side effects is based on the following frequency information: Very common: more than 1 in 10 people treated Common: less than 1 in 10 but more than 1 in 100 people treated Uncommon: less than 1 in 100 but more than 1 in 1000 people treated Rare: less than 1 in 1,000 but more than 1 in 10,000 people treated Very rare: less than 1 in 10,000 people treated, or unknown
