longevityRx · singlelongevity
B12 Injectable
Endurance and focus, naturally.
Price
$25
per month
$25.00 billed monthly
Intake first · physician-reviewed · ship in 24–48h
01CLIA-certified labs·
02Board-certified physicians, all 50 states·
03FDA-registered 503A pharmacies·
04HSA / FSA eligible · HIPAA-locked, never sold·
01CLIA-certified labs·
02Board-certified physicians, all 50 states·
03FDA-registered 503A pharmacies·
04HSA / FSA eligible · HIPAA-locked, never sold·
01CLIA-certified labs·
02Board-certified physicians, all 50 states·
03FDA-registered 503A pharmacies·
04HSA / FSA eligible · HIPAA-locked, never sold·
About
B12 Injectable.
Direct vitamin B12 delivery, bypassing the gut for full absorption.
What to expect
The timeline.
01
24–72 hours
Energy boost
02
Week 1–2
Reduced fatigue, better focus
03
Ongoing
Steady energy, healthy metabolism
A longer life, lived well.
- Supports low energy and fatigue
- Helps with brain fog
- Supports mood and sleep
- Ideal for plant-based diets
- Bypasses digestive absorption issues
Your questions, answered
Frequently asked questions
Direct vitamin B12 delivery, bypassing the gut for full absorption.
Discreetly, in unbranded packaging, with cold-chain shipping when required. Most orders ship within 24–48 hours of physician approval.
Yes. Cancel anytime from your portal. Unused months on multi-month plans are refundable per our policy.