Longevity & Cellular

B12 Injectable

Direct-absorption B12 for energy and cognition.

Direct-Absorption Delivery
Energy & Cognition Support
Methylation & Metabolism

Starting at $25/month

4 mg · 1 mo · 5 Milliliter$25
4 mg · 3 mo · 10 Milliliter$75

Talk to a Provider

Prescription only where clinically appropriate, following provider evaluation.

Form & cadence

Injectable · Weekly or biweekly

Investment

Personalized plans are shared after provider review. Pricing varies by therapy and treatment plan, and medication cost is disclosed transparently before you commit.

Overview

A methylcobalamin protocol prescribed where clinically appropriate to help restore functional B12 status when absorption or dietary intake is insufficient — with immediate bioavailability.

Vitamin B12 is essential for red-cell formation, neurologic function and methylation. Deficiency is common with age, in patients on long-term metformin or PPIs, and in adults following plant-forward diets.

How it works

The mechanism

Methylcobalamin bypasses gastrointestinal absorption barriers and restores intracellular B12 to functional levels for methionine synthesis and energy metabolism.

Candidacy

Who it's for

—Adults with confirmed low-normal B12 or elevated homocysteine
—Fatigue, cognitive fog or peripheral neuropathy where clinically appropriate
—Long-term metformin or PPI users at risk of gradual depletion

Benefits it may support

What good care can do.

Individual response varies. Our providers define realistic outcomes with you before any protocol begins, and refine the plan as your body responds.

—Designed to help support mitochondrial energy production and cellular repair pathways
—May support oxidative balance, recovery and sleep quality
—Personalized protocols aligned to labs, life stage and longevity goals
—Delivered where clinically appropriate under continuous provider monitoring

What to expect

A calibrated timeline.

After your assessment, our provider reviews your history and, where indicated, orders baseline labs. If b12 injectable is clinically appropriate, your personalized protocol is prescribed and shipped discreetly. From there, care is continuous — with scheduled check-ins, adjustment where needed and ongoing medical oversight throughout your plan.

Days 3–14

Energy and cognition often shift within the first two weeks.

Weeks 4–8

Maintenance cadence is set based on symptoms and follow-up labs.

Safety & side effects

Responsibly prescribed.

Excellent safety profile. Injection-site tenderness is the primary consideration.

This is a summary, not a complete list of considerations. Your provider will review the full risk-benefit picture, personal and family history, current medications and contraindications before any protocol is prescribed.

Provider oversight

Care that continues.

Every protocol is prescribed and managed by a US board-certified provider. Dose adjustments, ancillary medications, laboratory cadence and de-escalation decisions are made by your provider, not by a template.

Secure messaging keeps the conversation open between visits. When labs or symptoms suggest a change, we adjust. When a protocol has done its work, we say so.

Questions