Pros & Cons
B12 Pros and Cons
- B12 is available in different forms, including tablets, liquid, nasal spray, and injections. The oral forms are available over the counter without a prescription.
- B12 comes in a low-cost generic form.
- Taking B12 can prevent and treat B12 deficiency, which is associated with nerve damage.
- B12 nasal gel and injection are by prescription only.
- The oral form of B12 has low bioavailability (does not absorb well) and may not be effective in treating severe B12 deficiency.
- High doses of B12 can cause problems like low potassium and high platelet count.
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