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can b12 injections make you sleepy How Vitamin Shots Help Me Feel Refreshed What You Need to Know
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always replace the cap or stopper promptly after withdrawing a dose

We might suggest starting with 2,000-5,000 mcg injections to help with severe symptoms

Navarini AA, Nobbe S, Treb RM
When a person with Down syndrome has vitamin B12 and/or folate deficiency, the increase in the homocysteine level may not be great enough to overcome this starting low value of homocysteine

However, supplementing excessively high levels of B12 can have some adverse effects
