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This is the catch-22 we discussed earlier in the article
Pain may be noted with intramuscular injection
To limit bruising and swelling, gently apply ice to the area every 10-15 minutes for 1-2 hours post treatment
Check that they use sterile equipment and have protocols in place to handle any adverse reactions
Additional risk factors include: Chronic kidney disease : Reduced renal clearance may impair B12 excretion Liver disease : Hepatic dysfunction can disrupt B12 metabolism and storage Myeloproliferative disorders : Certain blood cancers increase B12-binding proteins Concurrent medication use : Some drugs may interact with B12 metabolism, including metformin, proton pump inhibitors, and H2 antagonists Patients with these conditions should have B12 supplementation carefully monitored by their healthcare team
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