What are B12 shots and how do they work?

Vitamin B12 injections deliver a high dose of B12 directly into the bloodstream, bypassing the digestive system. B12 is essential for:

• Red blood cell production
• Nerve function
• DNA synthesis
• Energy metabolism

At LegacyMD, we offer methylcobalamin B12—a highly bioavailable form of B12—administered as a quick intramuscular injection.

How often should I get B12 injections?

It depends on your individual levels and health goals. Common frequency recommendations include:

• Weekly injections for those with diagnosed deficiency or fatigue
• Biweekly to monthly for maintenance and general wellness

At LegacyMD, we customize your B12 schedule based on lab work, symptoms, and how you respond to treatment. Some patients require an initial loading phase of weekly shots for 4–6 weeks, followed by monthly boosters.

What are the signs I might need B12 shots?

B12 deficiency can develop slowly and often goes undiagnosed. Symptoms include:

• Chronic fatigue or low energy
• Brain fog or memory problems
• Mood swings or depression
• Pale skin or tingling hands/feet
• Poor sleep or frequent headaches
• Weakness or dizziness

Vegetarians, vegans, older adults, and people with digestive issues (e.g., Crohn’s, celiac, low stomach acid) are at higher risk of deficiency.

What are the benefits of B12 injections vs oral supplements?

Oral B12 supplements rely on absorption through the gut, which can be impaired in many individuals. Injections offer:

• Faster absorption (bypasses digestion)
• Immediate energy boost for many people
• Higher and more consistent levels of B12
• Fewer gastrointestinal side effects

B12 shots are ideal for patients who need rapid results or have trouble absorbing B12 from food or pills.

How quickly will I feel the effects?

Many patients feel a noticeable boost in energy and clarity within 24 to 72 hours after their first injection. For others, especially with significant deficiency, it may take several sessions to see full improvement.

Results vary based on your baseline levels, overall health, and consistency with treatment.

Are B12 shots safe for everyone?

Yes, B12 is a water-soluble vitamin, and excess amounts are excreted through urine. Side effects are rare but can include:

• Mild injection site soreness
• Temporary restlessness or increased heart rate (in sensitive individuals)

People with Leber’s disease (a rare genetic eye disorder) should not take B12 injections. Always consult with a healthcare provider before starting.

How much do B12 shots cost at LegacyMD?

At LegacyMD, B12 injections start at $30 per shot or are available in discounted packages for ongoing wellness. All treatments include:

• Professional administration by a trained medical provider
• Symptom tracking and wellness support
• Optional lab testing to monitor B12 levels

We serve the West Miami, Westchester, and Coral Gables areas with fast, affordable service.

Can I get B12 shots combined with other treatments?

Absolutely. Many of our patients combine B12 injections with other wellness or aesthetic services, such as:

• Weight loss programs (Semaglutide, Tirzepatide)
• NAD+ IV therapy for anti-aging
• Glutathione or Vitamin C injections for immune support

We customize your regimen based on your lifestyle, goals, and lab results. B12 can be a great complement to your broader health optimization plan.

Book Your B12 Shot at LegacyMD in West Miami

Whether you're dealing with fatigue or simply want a boost, Vitamin B12 shots at LegacyMD can enhance your energy, clarity, and overall wellness. Serving West Miami, Westchester, and Coral Gables, our expert team delivers fast, safe, and effective treatments in a comfortable setting.

Book your appointment today and start feeling your best from the inside out.