← Vitamins & Injectables

Biotin

Biotin is a cofactor for carboxylase enzymes central to fatty acid synthesis, gluconeogenesis, and amino acid metabolism, and supports keratin infrastructure.

Dr. Jonathan Snipes, MDMedically reviewed by Dr. Jonathan Snipes, MD. Last reviewed May 6, 2026.
Learn the Science ↓
Biotin injectable vial compounded by a licensed U.S. 503A compounding pharmacy for Rx Peps Direct

Verify us before you order

Hair, Skin & NailsHigh DoseEnergy MetabolismSelf-Inject

What It Is

An injectable form of biotin (vitamin B7) at 10mg/mL. Self-administered intramuscular or subcutaneous. Often used for hair, skin, and nail support.

How It Works

Biotin serves as a coenzyme for carboxylase enzymes in energy and lipid metabolism and supports the keratin structure of hair and nails. Injectable delivery ensures full dose availability independent of gut absorption.

Who It's For

Patients seeking hair, skin, and nail support or correcting biotin insufficiency. Popular as an adjunct to broader wellness protocols.

Who Should Avoid It

Biotin can interfere with laboratory immunoassays (thyroid panels, troponin, hormone tests). Flag for medical review if bloodwork is pending. Otherwise very well tolerated.

Ready to add Biotin?

A licensed provider reviews every order.

Protocol & Pricing

Pharmacy Price

$65/10ml

You pay pharmacy price. No markup.

Starting Dose

10mg (1mL) once weekly

Form

Injectable vial (10mL, 10mg/mL biotin)

Dosing Protocol

10mg (1mL at 10mg/mL) intramuscular or subcutaneous once weekly, or per provider. Single 10mL vial ($65). Pause biotin for several days before scheduled bloodwork to avoid assay interference.

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 Biotin?

A licensed provider reviews every order.

Stacking Guide

Stacks Well With

Methylcobalamin (B12)Vitamin B-Complex

Ready to add Biotin?

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

Vitamin B-Complex

Injectable B-complex (B1, B2, B3, B6) for energy metabolism and nervous system support.

$40/30ml

Independently tested

Biotin certificate of analysis

All 2 Biotin samples tested for sterility and endotoxin passed both. Latest sample received by the lab Oct 6, 2026.

Every Biotin 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 each of the 2 most recent lots.

Lot LG342011132, received Oct 6, 2026

Sterility
PassScanRDI Sterility Test. Started Oct 6, 2026, completed Oct 8, 2026. Method suitability ETX-250819-0489
Bacterial endotoxin
PassUSP <85>. Measured <2 EU/mL, limit 350 EU/mL. Started Oct 7, 2026, completed Oct 7, 2026
Sample, as printed
BIOTIN 10 MG/ML (10ML) INJECTION
Lot #
LG342011132
Storage
Room Temperature
Received by lab
Oct 6, 2026
Laboratory
Eagle Analytical Services Inc., Houston, TX
Submission #
ETX-261006-0821
Signed
Alison Eng, Quality Control Manager
Scan of Eagle Analytical report ETX-261006-0821 for lot LG342011132. Opens the original PDF.
Eagle Analytical report ETX-261006-0821. 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 Biotin?

A licensed provider reviews every order.

How to get Biotin prescribed online

Biotin 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 Biotin. 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 Biotin is appropriate for you, writes a patient-specific prescription. The starting dose is typically 10mg (1mL) once weekly.

  3. 3

    The pharmacy compounds and ships it. A licensed 503A compounding pharmacy in Texas compounds Biotin and ships it pre-reconstituted by FedEx overnight in a reusable cooled case. Your fill is Injectable vial (10mL, 10mg/mL biotin), and you pay the pharmacy $65/10ml at wholesale, with no clinic markup, plus a $15 flat FedEx overnight shipping fee charged by the pharmacy.

Rx Peps Direct prescribes Biotin 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 Biotin?

A licensed provider reviews every order.

Common questions about Biotin

What is Biotin?
An injectable form of biotin (vitamin B7) at 10mg/mL. Self-administered intramuscular or subcutaneous. Often used for hair, skin, and nail support.
How does Biotin work?
Biotin serves as a coenzyme for carboxylase enzymes in energy and lipid metabolism and supports the keratin structure of hair and nails. Injectable delivery ensures full dose availability independent of gut absorption.
Who is Biotin for?
Patients seeking hair, skin, and nail support or correcting biotin insufficiency. Popular as an adjunct to broader wellness protocols.
How much does Biotin cost?
Biotin costs $65/10ml 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 (10mL, 10mg/mL biotin).
What is the Beyond Use Date for Biotin?
A licensed U.S. 503A compounding pharmacy assigns the Beyond Use Date for Biotin 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 Biotin?

A licensed provider reviews every order.