b12 injections how long does it take to work Vitamin Injection Dosage Feeling worse after B12 Injection:

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FAQs Related B12 Patches as Effective as Injections Do B12 patches work for deficiency They can help slightly, but they are not strong enough for people with confirmed deficiency

I phoned to query it and they said the GP had reviewed all patients receiving injections

They have to go through the entire digestive process before they can start helping you

Some studies link Vitamin B12 deficiency to thrombocytopenia