Vitamin B12 With Calcium: What to Know Before You Combine
Vitamin B12 with calcium: how calcium helps B12 absorption, how B12 deficiency is tested and treated, and what a B12 overdose means. Talk to a clinician.


Twice-weekly injection
NAD+ delivered by injection for cellular energy and recovery.
From $109 per 4 weeks

Daily nasal spray
Needle-free daily NAD+ with fast intranasal absorption.
From $149 per 4 weeks

Daily oral liquid
Next-generation liposomal NAD+ taken by mouth each day.
From $149 per 4 weeks

Injection
A growth-hormone secretagogue used for recovery and sleep quality.
From $134 per 4 weeks
Compounded drug products are not FDA approved. FDA does not evaluate compounded products for safety, effectiveness or quality. Prescription products require an online evaluation with a licensed clinician and are dispensed only if prescribed. ShopMedRx does not manufacture compounded medications. Compounded medications are manufactured by 503A pharmacies. Actual product appearance and labeling of the medication might differ from website images. Results are not guaranteed and may vary by individual as part of a personalized weight loss and health program.
Most injectable preparations are refrigerated. Follow the storage instructions on your label and keep the medication out of direct light.
Once prescribed, you can request a refill through your account. Your clinician reviews the request and sends a new order to the pharmacy if it's still appropriate.
Medication ships from a licensed U.S. pharmacy in discreet, unmarked packaging directly to your address. Nothing on the outside identifies the contents.
Yes. You can message your care team through your account at no extra charge to ask questions, report side effects, or discuss adjusting your dose or medication.
These are compounded preparations prepared by a licensed U.S. compounding pharmacy for individual patients. Compounded medications are not FDA approved, though the pharmacy and its ingredients are regulated.
Vitamin B12 with calcium: how calcium helps B12 absorption, how B12 deficiency is tested and treated, and what a B12 overdose means. Talk to a clinician.
High B12 levels often come from supplements or injections. See what normal B12 levels are, high B12 symptoms, other causes and what to do after a result.
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