how long do i have to take b12 injections Does a Shot Last? How Often Should You Get

Standard dosing Daily dose: 300-600mcg per day Injection frequency: Once daily, preferably in the morning on an empty stomach Administration route: Subcutaneous injection Most users start at 300mcg to assess tolerance, then increase to 500-600mcg if the lower dose is well-tolerated but results are modest

This bypasses the digestive system entirely, achieving near-complete bioavailability

The optimal administration schedule and dosage vary depending on the desired therapeutic outcome

Neurological Symptoms Several Weeks to Months If you have tingling, numbness in your hands or feet, or balance problems caused by B12 deficiency, these symptoms take longer to improve

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