What Is a Compounding Pharmacy, and How Does It Fill a Prescription?

A compounding pharmacy is a licensed pharmacy where a pharmacist prepares a medication for one patient instead of only dispensing a finished product made by a manufacturer. That short answer hides the parts that matter to you: the law that lets the pharmacy do this, who checks its work, and the prescription that has to exist first. As of September 2026 the rules come from two sections of federal law, 503A and 503B, and from the board of pharmacy in each state. This guide explains what a compounding pharmacy is, follows one prescription through it, and ends where a Majesta Health visit begins: an assessment that needs no card and today places you on an early-access list.

*What this guide covers:*

• What a compounding pharmacy does that a regular pharmacy does not
• What federal law allows a 503A pharmacy to compound
• How a 503A pharmacy differs from a 503B outsourcing facility
• Whether compounded medications are FDA-approved
• Who inspects and licenses compounding pharmacies
• Why every compounded prescription names one patient
• How to check a compounding pharmacy's license yourself
• Where the pharmacy fits in a Majesta Health visit

What does a compounding pharmacy do that a regular pharmacy does not?

It makes the medication, not just the label. The FDA describes compounding as a practice in which a licensed pharmacist, a licensed physician or, in an outsourcing facility, a person under a licensed pharmacist's supervision "combines, mixes or alters ingredients of a drug to create a medication tailored to the needs of an individual patient."

That is also the plain answer to a common search: what does compounded mean? A compounded medication is one prepared by a pharmacist for a patient, rather than a finished product made by a drug manufacturer.

A pharmacy that only dispenses takes a finished product from a manufacturer, labels it for you and hands it over. A compounding pharmacy also prepares the medication itself, from its ingredients, against a prescription.

Why would anyone need that? The FDA gives examples. A drug may be compounded for "a patient who has an allergy to a certain dye and needs a medication to be made without it," or for a patient who cannot swallow a tablet or capsule. In the FDA's words, "compounding can serve an important patient need."

The FDA says just as plainly that compounded drugs "also may pose risks to patients." Both statements are true at the same time. A pharmacy or a platform that repeats only the first one is not telling you the whole story.

What does federal law allow a 503A pharmacy to compound?

Section 503A of the Federal Food, Drug, and Cosmetic Act, codified at 21 U.S.C. 353a, is the rule for state-licensed compounding pharmacies. It lists federal requirements that "shall not apply" to a compounded drug, and it grants that exemption only when its conditions are met.

The central condition is the patient. The drug must be "compounded for an identified individual patient based on the receipt of a valid prescription order." The compounding must be done by "a licensed pharmacist in a State licensed pharmacy or a Federal facility," or by a licensed physician. And the prescription must come from "a licensed physician or other licensed practitioner authorized by State law to prescribe drugs."

The statute also governs the ingredients. For bulk drug substances, it points to "an applicable United States Pharmacopoeia or National Formulary monograph, if a monograph exists," and it requires that they be "accompanied by valid certificates of analysis for each bulk drug substance." These are conditions the law sets. Whether a particular pharmacy meets them is what state boards and inspections exist to check.

One more detail keeps the picture accurate. The law allows a pharmacist to compound "in limited quantities before the receipt of a valid prescription order for such individual patient," based on a history of valid prescription orders. That does not remove the prescription. Under 21 U.S.C. 353(b)(1), a prescription drug "shall be dispensed only (i) upon a written prescription of a practitioner licensed by law to administer such drug," or on an oral prescription that is put in writing.

How is a 503A pharmacy different from a 503B outsourcing facility?

Section 503B, codified at 21 U.S.C. 353b, created a second kind of compounder in 2013: the outsourcing facility. The statute defines it as a facility at one geographic location or address that "is engaged in the compounding of sterile drugs" and "has elected to register as an outsourcing facility."

The two frameworks differ in licensing, in whether a prescription for a named patient is required, in who oversees them and in which manufacturing rules apply.

Neither column is a quality rating. They are two separate legal frameworks with different obligations. For the side-by-side detail, see our 503A vs 503B pharmacy guide. The prescriptions in a Majesta Health visit go to a 503A pharmacy, which is why the rest of this guide follows the 503A path.

Are compounded medications FDA-approved?

No. The FDA says it directly: "Compounded drugs are not FDA-approved. This means that FDA does not verify the safety, effectiveness or quality of compounded drugs before they are marketed." Compounded medications are not FDA-approved as final products.

The FDA also says when compounded drugs belong: "Compounded drugs should only be used in patients whose medical needs cannot be met by an FDA-approved drug." And it names the risk of poor practice: "poor compounding practices can result in serious drug quality problems, such as contamination or a drug that contains too much or too little active ingredient."

What does that leave you to do? Three things. Let a licensed physician decide whether a compounded medication is appropriate for you, with your full history in front of them. Know which pharmacy prepared it. And check that pharmacy's license, which the next sections show you how to do.

Who inspects and licenses compounding pharmacies?

Usually your state, and sometimes the FDA. The FDA's own answer: "Generally, state boards of pharmacy have primary responsibility for the day-to-day oversight of state-licensed pharmacies that are not registered with FDA as outsourcing facilities." It adds that the FDA "does conduct surveillance and for-cause inspections of state-licensed pharmacies that are not registered as outsourcing facilities."

Outsourcing facilities sit under a different arrangement. Those that register under section 503B "are primarily overseen by FDA and inspected by FDA according to a risk-based schedule."

A state board of pharmacy is a state agency. Texas, for example, describes its board as "the state agency responsible for the licensing/registration of Texas pharmacists, pharmacy technicians, and pharmacies; for establishing regulations for pharmacy practice; and for disciplining licensees and registrants." The FDA links every state board's license database from a single page, covered below.

Two more federal rules apply wherever compounding happens. The FDA notes that "other federal law applies, including provisions regarding insanitary conditions." And on marketing, asked "Does FDA have authority over telehealth companies promoting compounded drugs?", the FDA answers that prescription drug promotion by or for drug manufacturers, "including compounders, must be truthful, non-misleading and accurate."

Why does every compounded prescription name one patient?

Because under 503A the patient is the reason the drug exists. The exemption applies to a drug "compounded for an identified individual patient based on the receipt of a valid prescription order." The prescription names you, and the pharmacy prepares and dispenses the medication for you.

Here is the path of one prescription through a 503A pharmacy, in order.

1. A licensed prescriber decides. A physician or other practitioner "authorized by State law to prescribe drugs" evaluates the patient and decides whether a compounded medication is appropriate. No prescription is guaranteed.
2. A valid prescription is written for that patient. It names the patient and is sent to the pharmacy.
3. A licensed pharmacist prepares the medication. The work happens in a state-licensed pharmacy, under the conditions section 503A sets.
4. The pharmacy dispenses it on the prescription. A prescription drug may be dispensed only on a licensed practitioner's prescription, under 21 U.S.C. 353(b)(1).
5. The state board oversees the pharmacy. Day-to-day oversight of a state-licensed pharmacy sits with the state board of pharmacy, and the FDA can inspect as well.

This is also why a compounded medication offered without a prescription does not fit the conditions the statute sets for 503A compounding. If a seller skips step one, every later step is missing its foundation.

How can you check a compounding pharmacy's license yourself?

With four checks, all of them public.

1. Ask for the pharmacy's name. The FDA warns that people who buy compounded drugs through online pharmacies and telehealth platforms "may not know the identity of the compounder that produced the drug." A platform should name its pharmacy before you pay.
2. Look the pharmacy up with the state board. The FDA's BeSafeRx program links every state's database: "Click on your state to look for your online pharmacy in the state's board of pharmacy license database." Its rule is short: "If your online pharmacy is not listed, you should not use that pharmacy."
3. Run the FDA's safe signs. Per BeSafeRx, a safe online pharmacy "Always requires a doctor's prescription," "Provides a physical address and telephone number in the United States," "Has a licensed pharmacist on staff to answer your questions" and "Is licensed with a state board of pharmacy."
4. For an outsourcing facility, use the FDA list. Federal law requires the FDA to publish "a list of the name of each facility registered under this subsection as an outsourcing facility."

The FDA's warning signs deserve a read as well. One of them is a site that "Offers deep discounts or prices that seem too good to be true." If any check fails, stop there. A low price does not repair a missing license.

How does a compounding pharmacy fit into a Majesta Health visit?

It comes last, after a physician decides. Majesta Health is a telehealth service. We are not the pharmacy, and we are not the prescriber.

Our dispensing pharmacy partner is Belmar Pharma Solutions, a state-licensed 503A compounding pharmacy, as named on our pricing page.

When enrollment opens, the visit runs in this order:

1. The assessment. You complete the assessment, which asks for your state first and then about your health.
2. A physician licensed in your state reads your file. Every physician is listed with their National Provider Identifier (NPI) on our care team page. The physician may ask for a phone or video visit where your state's rules require one.
3. The physician decides. Medication is prescribed only if a licensed physician determines it is appropriate. The physician can also decide that it is not, and no prescription is guaranteed.
4. A charge happens only on approval. Nothing is charged at checkout. The first month is $179 for Essential (compounded semaglutide) or $339 for Performance (compounded tirzepatide), and the $20 consultation fee is included in that first-month price. After that, Essential renews at $299 and Performance at $439 for each 30-day cycle. If the physician does not approve treatment, you are not charged.
5. The prescription goes to the pharmacy. The 503A pharmacy prepares and dispenses the medication for you, and it ships to you.

To cancel, you email support@majestahealth.com. There is no cancel button; one email is the whole process, and cancellation takes effect at the end of your current billing cycle. The order of charges is set out in the billing policy, and practical questions are answered in the help center.

For the medication side of this, see our compounded semaglutide guide and our guide on how to get tirzepatide. For the visit itself, see how an online weight loss doctor visit works.

If you want to know whether this path fits you, the next step is the assessment. It asks for your state first and needs no card. As of September 2026 enrollment has not opened, so finishing it places you on the early-access list, and we email you when enrollment opens in your state; nothing is charged today. The states page shows where we will operate. When enrollment opens, a licensed physician reads your answers and decides, and completing the assessment does not guarantee a prescription. Medication is prescribed only if a licensed physician determines it is appropriate.

What the primary sources say

• U.S. Food and Drug Administration, Human Drug Compounding (accessed September 29, 2026): "combines, mixes or alters ingredients of a drug to create a medication tailored to the needs of an individual patient"; "Although compounded drugs can serve an important medical need for certain patients, they also may pose risks to patients."
• U.S. Food and Drug Administration, Compounding and the FDA: Questions and Answers (accessed September 29, 2026): "Compounded drugs are not FDA-approved. This means that FDA does not verify the safety, effectiveness or quality of compounded drugs before they are marketed."; "a patient who has an allergy to a certain dye and needs a medication to be made without it"; "compounding can serve an important patient need"; "Compounded drugs should only be used in patients whose medical needs cannot be met by an FDA-approved drug."; "poor compounding practices can result in serious drug quality problems, such as contamination or a drug that contains too much or too little active ingredient"; "Generally, state boards of pharmacy have primary responsibility for the day-to-day oversight of state-licensed pharmacies that are not registered with FDA as outsourcing facilities."; "does conduct surveillance and for-cause inspections of state-licensed pharmacies that are not registered as outsourcing facilities"; "are primarily overseen by FDA and inspected by FDA according to a risk-based schedule"; "Drugs compounded in outsourcing facilities are subject to current good manufacturing practice (CGMP) requirements. By contrast, drugs compounded by a licensed pharmacist in a state-licensed pharmacy or federal facility, or by a physician, in accordance with the conditions of section 503A of the FD&C Act, are not."; "other federal law applies, including provisions regarding insanitary conditions"; "including compounders, must be truthful, non-misleading and accurate"; "may not know the identity of the compounder that produced the drug"; "Does FDA have authority over telehealth companies promoting compounded drugs?"
• Cornell Law School, Legal Information Institute, 21 U.S.C. 353a, Pharmacy compounding (section 503A) (accessed September 29, 2026): "shall not apply to a drug product if the drug product is compounded for an identified individual patient based on the receipt of a valid prescription order"; "a licensed pharmacist in a State licensed pharmacy or a Federal facility, or (B) a licensed physician"; "a licensed physician or other licensed practitioner authorized by State law to prescribe drugs"; "in limited quantities before the receipt of a valid prescription order for such individual patient"; "an applicable United States Pharmacopoeia or National Formulary monograph, if a monograph exists"; "accompanied by valid certificates of analysis for each bulk drug substance"
• Cornell Law School, Legal Information Institute, 21 U.S.C. 353b, Outsourcing facilities (section 503B) (accessed September 29, 2026): "by or under the direct supervision of a licensed pharmacist"; "is engaged in the compounding of sterile drugs"; "has elected to register as an outsourcing facility"; "An outsourcing facility is not required to be a licensed pharmacy."; "An outsourcing facility may or may not obtain prescriptions for identified individual patients."; "a list of the name of each facility registered under this subsection as an outsourcing facility"
• Cornell Law School, Legal Information Institute, 21 U.S.C. 353(b)(1) (accessed September 29, 2026): "shall be dispensed only (i) upon a written prescription of a practitioner licensed by law to administer such drug"
• U.S. Food and Drug Administration, Information for Outsourcing Facilities (accessed September 29, 2026): "The Drug Quality and Security Act, signed into law on November 27, 2013, created a new section 503B in the Federal Food, Drug, and Cosmetic Act."; "must comply with CGMP requirements; are inspected by FDA according to a risk-based schedule"
• U.S. Food and Drug Administration, BeSafeRx: Locate a State-Licensed Online Pharmacy (accessed September 29, 2026): "Click on your state to look for your online pharmacy in the state's board of pharmacy license database."; "If your online pharmacy is not listed, you should not use that pharmacy."
• U.S. Food and Drug Administration, BeSafeRx: Considering an Online Pharmacy? (accessed September 29, 2026): "Always requires a doctor's prescription", "Provides a physical address and telephone number in the United States", "Has a licensed pharmacist on staff to answer your questions", "Is licensed with a state board of pharmacy"; "Offers deep discounts or prices that seem too good to be true"
• Texas State Board of Pharmacy, home page (accessed September 29, 2026): "the state agency responsible for the licensing/registration of Texas pharmacists, pharmacy technicians, and pharmacies; for establishing regulations for pharmacy practice; and for disciplining licensees and registrants"

Every source is listed with its address below.

This article is for informational purposes only and does not constitute medical advice, diagnosis, or treatment. Always consult with a qualified healthcare provider. Compounded medications are not FDA-approved as final products. Medication is prescribed only if a licensed physician determines it is appropriate. Prices are Majesta Health's published prices as of September 2026 and are subject to change.