← Vitamins & Injectables

Vitamin B-Complex

A blend of B vitamins that act as coenzymes across carbohydrate, fat, and protein metabolism and in neurotransmitter synthesis.

Dr. Jonathan Snipes, MDMedically reviewed by Dr. Jonathan Snipes, MD. Last reviewed May 6, 2026.
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Vitamin B-complex injectable vial compounded by a licensed U.S. 503A compounding pharmacy for Rx Peps Direct

Verify us before you order

  • Your prescriber

    Kim Callender, NP, FNP-BC

    Lead prescriber. Medical director: Jonathan Snipes, MD.

    Look them up on the federal NPI Registry: Callender, Snipes

  • Vitamin B-Complex lab report

    Passed sterility and endotoxin

    Tested by Eagle Analytical, lot LG342009503, report dated Jul 28, 2026.

    Open the report (PDF)

  • Patient reviews

    On Trustpilot

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Four B VitaminsEnergy MetabolismNervous SystemSelf-Inject

What It Is

An injectable B-complex with thiamine (B1) 100mg, niacinamide (B3) 100mg, riboflavin-5-phosphate (B2) 2mg, and pyridoxine (B6) 2mg per mL. Self-administered intramuscular.

How It Works

Each B vitamin serves as a coenzyme: thiamine in carbohydrate metabolism, riboflavin in the electron transport chain, niacinamide in NAD and NADP pathways, and pyridoxine in amino acid and neurotransmitter metabolism. Injection delivers the full pool without relying on gut absorption.

Who It's For

Patients wanting broad B-vitamin support for energy, stress, and metabolic demand, including those on weight-loss protocols or with restricted diets.

Who Should Avoid It

Known allergy to any B vitamin. Use caution in renal impairment. Generally very well tolerated.

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A licensed provider reviews every order.

Protocol & Pricing

Pharmacy Price

$40/30ml

You pay pharmacy price. No markup.

Starting Dose

1mL once weekly

Form

Injectable vial (30mL; thiamine 100mg, niacinamide 100mg, riboflavin-5-phosphate 2mg, pyridoxine 2mg per mL)

Dosing Protocol

1mL intramuscular once weekly, or per provider. Single 30mL vial ($40). Per mL: thiamine 100mg, niacinamide 100mg, riboflavin-5-phosphate 2mg, pyridoxine 2mg.

Beyond Use Date

60 Days from compounding (USP <797>)

A licensed U.S. 503A compounding pharmacy assigns this date and prints it on your vial label. Always follow the label.

Ready to add Vitamin B-Complex?

A licensed provider reviews every order.

Stacking Guide

Stacks Well With

Methylcobalamin (B12)Lipo-C (Cyanocobalamin/MIC/L-Carnitine)

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A licensed provider reviews every order.

Related Peptides

Methylcobalamin (B12)

Injectable methylcobalamin, the active, ready-to-use form of vitamin B12 for energy and methylation support.

$30/10ml

Lipo-C (Cyanocobalamin/MIC/L-Carnitine)

Enhanced lipotropic injection adding L-carnitine to cyanocobalamin and MIC for improved energy and fat transport.

From $35/10ml

Independently tested

Vitamin B-Complex certificate of analysis

The Vitamin B-Complex sample tested for sterility and endotoxin passed both. Latest sample received by the lab Jul 24, 2026.

Every Vitamin B-Complex batch dispensed by a licensed U.S. 503A compounding pharmacy is independently tested by Eagle Analytical Services (FDA-registered, A2LA ISO 17025 accredited). Sterility testing checks that nothing grows in the sample; the USP <85> endotoxin test checks for bacterial toxins that can cause fever. Below is the lab's own report for the most recent lot.

Lot LG342009503, received Jul 24, 2026

Sterility
PassScanRDI Sterility Test. Started Jul 24, 2026, completed Jul 28, 2026. Method suitability ETX-251106-0169
Bacterial endotoxin
PassUSP <85>. Measured <2 EU/mL, limit 400 EU/mL. Started Jul 27, 2026, completed Jul 28, 2026
Sample, as printed
VITAMIN B- COMPLEX 30ML
Lot #
LG342009503
Storage
Refrigerated
Received by lab
Jul 24, 2026
Laboratory
Eagle Analytical Services Inc., Houston, TX
Submission #
ETX-260724-0217
Signed
Alison Eng, Quality Control Manager
Scan of Eagle Analytical report ETX-260724-0217 for lot LG342009503. Opens the original PDF.
Eagle Analytical report ETX-260724-0217. Open the original PDF (opens in a new tab)

Eagle Analytical Services is an independent FDA-registered laboratory, A2LA accredited to ISO 17025, based in Houston, Texas. They have no commercial relationship with Rx Peps Direct. Rx Peps Direct prescribes; the pharmacy compounds and dispenses; Eagle tests every batch. Three separate companies. Results apply only to the tested sample as received. Browse our full quality program on the quality page.

Ready to add Vitamin B-Complex?

A licensed provider reviews every order.

How to get Vitamin B-Complex prescribed online

Vitamin B-Complex is available by prescription after an online medical review and dispensed for human use by a licensed 503A pharmacy. That is what separates it from research-use-only vials sold without a prescription. There is no membership, just a medical review fee per order, and automatic refills are optional.

  1. 1

    Complete a $39 medical review. Answer a short intake about your health history and your goals for Vitamin B-Complex. The $39 fee is the only charge Rx Peps Direct collects, paid once, not a recurring subscription.

  2. 2

    A licensed provider reviews it. A US-licensed clinician reviews your intake and, if Vitamin B-Complex is appropriate for you, writes a patient-specific prescription. The starting dose is typically 1mL once weekly.

  3. 3

    The pharmacy compounds and ships it. A licensed 503A compounding pharmacy in Texas compounds Vitamin B-Complex and ships it pre-reconstituted by FedEx overnight in a reusable cooled case. Your fill is Injectable vial (30mL; thiamine 100mg, niacinamide 100mg, riboflavin-5-phosphate 2mg, pyridoxine 2mg per mL), and you pay the pharmacy $40/30ml at wholesale, with no clinic markup, plus a $15 flat FedEx overnight shipping fee charged by the pharmacy.

Rx Peps Direct prescribes Vitamin B-Complex in the 28 states plus Washington, DC where its medical team is licensed. Start your $39 medical review or browse the full Vitamins & Injectables range. Comparing services first? See how Rx Peps Direct stacks up against seven other providers in our best telehealth for compounded peptides comparison.

Ready to add Vitamin B-Complex?

A licensed provider reviews every order.

Common questions about Vitamin B-Complex

What is Vitamin B-Complex?
An injectable B-complex with thiamine (B1) 100mg, niacinamide (B3) 100mg, riboflavin-5-phosphate (B2) 2mg, and pyridoxine (B6) 2mg per mL. Self-administered intramuscular.
How does Vitamin B-Complex work?
Each B vitamin serves as a coenzyme: thiamine in carbohydrate metabolism, riboflavin in the electron transport chain, niacinamide in NAD and NADP pathways, and pyridoxine in amino acid and neurotransmitter metabolism. Injection delivers the full pool without relying on gut absorption.
Who is Vitamin B-Complex for?
Patients wanting broad B-vitamin support for energy, stress, and metabolic demand, including those on weight-loss protocols or with restricted diets.
How much does Vitamin B-Complex cost?
Vitamin B-Complex costs $40/30ml from a licensed U.S. 503A compounding pharmacy at wholesale, with a flat $39 medical review from Rx Peps Direct. The form is Injectable vial (30mL; thiamine 100mg, niacinamide 100mg, riboflavin-5-phosphate 2mg, pyridoxine 2mg per mL).
What is the Beyond Use Date for Vitamin B-Complex?
A licensed U.S. 503A compounding pharmacy assigns the Beyond Use Date for Vitamin B-Complex and prints it on the vial label. The listed figure is 60 Days from compounding (USP <797>). Always follow the date on your own label.

Ready to add Vitamin B-Complex?

A licensed provider reviews every order.