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If it's not clear or contains suspended particles, do not use it and return for replacement
B12 injection shots can usually be felt within 24 hours (and a change should show in blood tests after a month or two) A high dose of B12 oral supplementation takes the same time as an injection: roughly 24 hours to feel an improvement and then up to 2 months to show in blood markers
Direct Comparison: Oral vs Injection Neither form is objectively superior
By the way, even if you dont have pernicious anemia, but a severe B12 deficiency due to other causes, B12 shots are still the way to go
**For any medical procedures, patients may respond to treatment differently, each patients results may vary
