VialsRx is a 503A compounding pharmacy based in Houston, TX. It operates under state board of pharmacy licensure. We are not aware of any recent public FDA enforcement actions against the pharmacy, though compounding pharmacy regulatory history can change. Always verify current status with your state board of pharmacy.

Where is VialsRx located?

VialsRx is headquartered in Houston, TX. The pharmacy is licensed to ship to 0 US states.

What does VialsRx produce?

VialsRx produces compounded semaglutide and compounded tirzepatide in addition to other compounded preparations. As a 503A pharmacy, it dispenses compounded medications in response to individual patient prescriptions under state board of pharmacy oversight.

What is the difference between 503A and 503B?

503A pharmacies prepare compounded medications for individual patients in response to specific prescriptions and are regulated primarily by state boards of pharmacy under USP sterile compounding standards. 503B outsourcing facilities register directly with the FDA, follow current Good Manufacturing Practices (cGMP), and can produce compounded medications in larger batches without patient-specific prescriptions. 503B facilities are subject to FDA inspection.

Compounding Pharmacy · Houston, TX · 503A

VialsRx Review

VialsRx is a 503A community sterile compounding pharmacy in Houston, Texas, licensed by the Texas State Board of Pharmacy (license #35264). It prepares compounded semaglutide and tirzepatide (GLP-1) per individual prescription under USP <797> sterile-compounding standards and ships to all 50 states. Note: routine 503A compounding of GLP-1s that copy commercially available products is restricted now that the FDA shortages are resolved.

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503A

Location: Houston, TX

Website: vialsrx.com

States licensed: 0

6.0

Weight Loss Rankings Score

out of 10

About this pharmacy

Certifications & Compliance

All sterile compounding pharmacies in the United States are required to follow United States Pharmacopeia General Chapter <797> sterile compounding standards^[4], with finished preparations evaluated against USP <71> sterility testing^[5] and USP <85> bacterial endotoxin testing^[6] as appropriate for the product type.

We have not verified any third-party accreditations for this pharmacy beyond its state pharmacy license.

Drugs Produced

Compounding pharmacies' ability to produce semaglutide or tirzepatide depends on the FDA Drug Shortage List status for each reference product; compounding eligibility can change when a drug moves on or off the shortage list^[7].

Yes

Semaglutide

Compounded semaglutide produced

Yes

Tirzepatide

Compounded tirzepatide produced

States Licensed (0)

Regulatory Actions

No public FDA enforcement actions or recalls are on file in our records for VialsRx. Regulatory status can change — verify with the FDA and your state board of pharmacy before relying on this information.

Weight Loss Rankings Score Breakdown

Accreditation & Compliance6/10

Regulatory Standing9/10

State Coverage0/10

GLP-1 Production10/10

Track Record5/10

Scores are independently researched. See our methodology for details.

Medium confidence · Last verified 2026-06-04 via manual · How we verify provider data

Frequently Asked Questions

Glossary references

Key terms in this article, linked to their canonical definitions.

Semaglutide · Drugs and brands
Tirzepatide · Drugs and brands
Compounded GLP-1 · Pharmacy and drug forms
503A pharmacy · Pharmacy and drug forms
503B outsourcing facility · Pharmacy and drug forms
PCAB accreditation · Pharmacy and drug forms
Off-label use · Insurance and regulatory
FDA Drug Shortage List · Insurance and regulatory

See Top Semaglutide Providers All Pharmacies

Sources & methodology — as of June 2026

1.FDA — Compounding and the 503A Pharmacy Framework— U.S. Food & Drug Administration.
2.FDA — 503B Outsourcing Facility Registration and Requirements— U.S. Food & Drug Administration.
3.PCAB — Pharmacy Compounding Accreditation Board Standards— Accreditation Commission for Health Care (ACHC) / PCAB.
4.USP General Chapter <797> — Pharmaceutical Compounding: Sterile Preparations— United States Pharmacopeia.
5.USP General Chapter <71> — Sterility Tests— United States Pharmacopeia.
6.USP General Chapter <85> — Bacterial Endotoxins Test— United States Pharmacopeia.
7.FDA — Drug Shortages Database (current shortage listings)— U.S. Food & Drug Administration.