Compounding Pharmacy · Tomball, TX · 503A

GreenwichRx Review

GreenwichRx (Greenwich Rx) is a 503A sterile compounding pharmacy in Tomball, Texas that compounds patient-specific semaglutide and tirzepatide (GLP-1) for weight loss. It complies with USP chapters 795, 797, and 800, partners with the Professional Compounding Centers of America (PCCA) for premium-grade ingredients, and maintains state licensure across the U.S. 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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503APCCA
Location: Tomball, TX
States licensed: 0
6.0
★★★☆☆3/5

Editorial score · methodology

Telehealth Providers Sourcing From This Pharmacy

These telehealth brands are reported to fulfill some or all compounded GLP-1 prescriptions through GreenwichRx. Sourcing arrangements can change over time.

7.9/ 10

Trimi Health

Best for: compounded semaglutide or tirzepatide on monthly to 12-month plans, backed by a 6-month money-back policy

★★★★☆4/5

Editorial score · methodology

$99/mosemaglutide
$125/motirzepatide
CompoundedSemaglutideTirzepatide
Get StartedRead full Trimi Health review →
7.2/ 10

Good Girl Rx

Best for: women who want several compounded GLP-1 formats, including pills, with prices posted upfront

★★★★☆3.6/5

Editorial score · methodology

$179/mosemaglutide
$244/motirzepatide
CompoundedSemaglutideTirzepatideLegitScript VerifiedFDA Warning
Get StartedRead full Good Girl Rx review →

Top-Rated GLP-1 Partners

Not sourced from GreenwichRx — these are our highest-scored vetted telehealth partners for compounded GLP-1s, if you'd rather start with a provider we've walked through end to end.

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No insurance needed · HSA/FSA eligible · vetted by our editors

7.4

altRX

Low-cost compounded GLP-1s with brand-name Zepbound, Wegovy and Ozempic as options

Starting price: $89/mo

Get started →Read review altRX →
8.1

RxSpan MD

Physician-led, pharmacy-transparent compounded GLP-1 with brand-name options

Starting price: $249/mo

Get started →Read review RxSpan MD →
7.5

Luvo Health

Compounded and brand GLP-1s, oral tablets and microdosing on one public price list

Starting price: $99/mo

Get started →Read review Luvo Health →
8.0

Strut Health

Oral-lozenge compounded GLP-1 access

Starting price: $99/mo

Get started →Read review Strut Health →

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.

PCCA
Professional Compounding Centers of America — membership network supplying compounding pharmacies with pharmaceutical-grade ingredients, formulations, and training.

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].

Semaglutide
Compounded semaglutide produced
Tirzepatide
Compounded tirzepatide produced

States Licensed

GreenwichRx has not published a state-by-state licensure list. Verify licensure for your state directly with your state board of pharmacy before filling a prescription here.

Regulatory Actions

No public FDA enforcement actions or recalls are on file in our records for GreenwichRx. 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 June 2026 · How we verify provider data

Frequently Asked Questions

GreenwichRx is a 503A compounding pharmacy based in Tomball, 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.
GreenwichRx is headquartered in Tomball, TX. The pharmacy is licensed to ship to 0 US states.
GreenwichRx 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.
503A pharmacies prepare compounded medications for individual patients in response to specific prescriptions and are regulated primarily by state boards of pharmacy under USP <797> 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.

Key terms, explained

New to GLP-1s? Tap any term for a quick, plain-English definition.

See Top Semaglutide ProvidersAll Pharmacies
Sources & methodology — as of October 2026
  1. 1.FDA — Compounding and the 503A Pharmacy Framework— U.S. Food & Drug Administration.
  2. 2.FDA — 503B Outsourcing Facility Registration and Requirements— U.S. Food & Drug Administration.
  3. 3.PCAB — Pharmacy Compounding Accreditation Board Standards— Accreditation Commission for Health Care (ACHC) / PCAB.
  4. 4.USP General Chapter <797> — Pharmaceutical Compounding: Sterile Preparations— United States Pharmacopeia.
  5. 5.USP General Chapter <71> — Sterility Tests— United States Pharmacopeia.
  6. 6.USP General Chapter <85> — Bacterial Endotoxins Test— United States Pharmacopeia.
  7. 7.FDA — Drug Shortages Database (current shortage listings)— U.S. Food & Drug Administration.