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Always disclose your complete medical history and medications to your provider before starting

However, vitamin B12 deficiency can cause damage to your nerves and affect brain function

But, what we do know from our own personal experience with thousands of customers, is that normal usage (drawing from an aluminum-wrapped vial, and injecting within a minute or two) does not render the B12 even remotely ineffective
Here is a breakdown of the most common culprits

Whether you visit regularly or occasionally, you can choose the approach that fits your needs, your schedule, and your budget
