Houston LOP Pharmacy
Our home base. Serving Harris County PI law firms with same-day LOP processing and next-day delivery. Houston's personal injury pharmacy partner.
Contact UsTexas Personal Injury Pharmacy
LoneStar Injury Rx — a dedicated program by Greenhouse Pharmacy — accepts Letter of Protection prescriptions, delivers statewide, and produces court-ready documentation for every case.
For Personal Injury Law Firms
We accept Letter of Protection on every prescription. Your clients receive medications immediately with no out-of-pocket cost at point of service.
Every prescription includes itemized billing, clinical notes, and medication logs formatted for demand letters, depositions, and insurance negotiations.
Medications shipped directly to your client anywhere in Texas. No pharmacy visit required — ideal for injured patients with limited mobility.
One point of contact for your entire firm. We handle billing inquiries, documentation requests, and case-specific pharmacy needs directly with your team.
Your firm sends us the patient referral and LOP agreement — takes less than 5 minutes.
We coordinate with the treating physician to receive, verify, and process the prescription.
Dispensed and shipped directly to your client anywhere in Texas — typically within 24 hours.
Court-ready billing records and clinical notes delivered directly to your team.
We bill from settlement proceeds. No upfront cost to attorney or client — ever.
What We Provide

We accept and process LOP prescriptions immediately. No upfront payment from patients or attorneys at time of service.
Learn More
Medications shipped to your client's door anywhere in Texas. All 254 counties. No pharmacy visit required.
Learn More
Itemized billing, clinical notes, and medication logs formatted for demand letters, depositions, and settlement negotiations.
Learn More
Topical pain creams, custom formulations, and specialized dosing for PI patients — powered by Greenhouse Pharmacy's compounding facilities.
Learn MoreTexas Market Coverage
Whether your client is in Houston or El Paso, Lubbock or Laredo — we deliver directly to their door.
Our home base. Serving Harris County PI law firms with same-day LOP processing and next-day delivery. Houston's personal injury pharmacy partner.
Contact UsServing Dallas County and Tarrant County PI attorneys with statewide LOP prescription fulfillment and court-ready documentation for DFW cases.
Contact UsTravis County personal injury law firms trust LoneStar Injury Rx for LOP pharmacy services and direct delivery to Austin-area PI patients.
Contact UsBexar County PI attorneys rely on LoneStar Injury Rx for fast LOP prescription processing and statewide delivery for their San Antonio clients.
Contact UsTarrant County personal injury pharmacy services — LOP accepted, medications delivered, attorney documentation ready for every Fort Worth PI case.
Contact UsEl Paso, Corpus Christi, Lubbock, Laredo, Amarillo, Midland — if your client is in Texas, we deliver. No patient is out of range for LoneStar Injury Rx.
Contact UsWe serve all 254 Texas counties. No patient is out of range.
Powered By
LoneStar Injury Rx is the personal injury pharmacy program of Greenhouse Pharmacy — Houston's innovative independent pharmacy trusted by 22,000+ patients our pharmacists have personally served.
"Our mission is simple — provide tailored public health solutions that benefit the whole community."— Nitant V. Patel, Director of Operations, Greenhouse Pharmacy




Speak with our PI pharmacy team — setup takes 15 minutes.
Common Questions
Everything PI law firms need to know about LOP pharmacy services in Texas.
A LOP pharmacy accepts a Letter of Protection in lieu of payment at the time of service. Your client receives medication immediately — no upfront cost, no insurance hurdles. We bill from the settlement proceeds when the case resolves, making it completely risk-free for both attorney and patient.
Yes. LoneStar Injury Rx accepts LOP prescriptions and delivers medications to patients in all 254 Texas counties — Houston, Dallas, Austin, San Antonio, Fort Worth, El Paso, Lubbock, Laredo, and everywhere in between.
We provide court-ready documentation including itemized billing records, clinical notes, medication logs, and pharmacy narratives — all formatted for demand letters, depositions, mediation, and insurance negotiations. Our records are designed to strengthen your medical expense claims.
Most prescriptions are fulfilled and shipped within 24 hours of receiving the LOP agreement and prescription. We maintain a 98% same-day fulfillment rate. For urgent cases, call us directly at (281) 676-4080.
Yes. LoneStar Injury Rx is operated by Greenhouse Pharmacy, fully licensed by the Texas State Board of Pharmacy under the Texas Pharmacy Act (Texas Occupations Code §§ 551–569). All prescriptions are processed in strict compliance with state and federal pharmacy law.
Yes. Powered by Greenhouse Pharmacy's compounding facilities, we offer topical pain creams, anti-inflammatory preparations, custom dosing formulations, and specialized medications tailored for personal injury patients.
Fill out our partner inquiry form below or call (281) 676-4080. We'll assign your firm a dedicated attorney liaison and walk you through our simple LOP referral process. Setup takes less than 15 minutes and there's no cost or commitment to get started.
Get In Touch
Takes less than 2 minutes. We'll follow up within 2 business hours.
LoneStar Injury Rx is operated by Greenhouse Pharmacy, licensed by the Texas State Board of Pharmacy under the Texas Pharmacy Act.
Just a few quick details to get started.
We'll use these to follow up within 2 business hours.
Helps us tailor how we work with your firm.
Optional — questions, context, or anything you'd like us to know.
Review your details
Do not submit confidential patient medical information. For urgent needs, call (281) 676-4080.
We'll be in touch within 2 business hours. In the meantime, feel free to call us directly at (281) 676-4080.
Your submission