Learning Center
Plain explanations of how compounding works, what we prepare, and which decisions belong to your prescriber. ProCompounding is a PCAB-accredited 503A pharmacy in Johnson City, Tennessee, licensed in all 50 states and the District of Columbia.
What Is Compounding?
Compounding is the preparation of a medication for one patient, from a prescription written by a licensed prescriber. Under Section 503A, a compounding pharmacy can prepare strengths, combinations and dosage forms that are not available commercially.
Why Prescribers Use It
Commercial medications come in a limited set of strengths and forms. Compounding lets a pharmacist prepare the strength a prescriber writes, combine more than one active ingredient into a single preparation, leave out dyes, gluten, lactose or preservatives for patients who react to them, and prepare a medication as a topical or vaginal preparation for someone who cannot swallow a capsule.
The Compounding Process
Every compounded medication begins with a prescription from a licensed prescriber. Our pharmacists select pharmaceutical-grade ingredients, calculate the quantities the prescription calls for, and prepare the formulation in our Johnson City lab. Potency testing is performed periodically through a third-party laboratory, depending on the preparation. We have a 48-hour compounding time on most preparations; shipping time is additional.
503A and 503B Are Different Things
A 503A pharmacy, which is what ProCompounding is, prepares medications against individual patient prescriptions. A 503B outsourcing facility prepares larger batches without a patient-specific prescription, for use in clinics and hospitals. Neither is a better version of the other; they are built for different jobs. We explain Section 503A in full on our what is a 503A pharmacy page.
Hormone Replacement Therapy (BHRT)
Bioidentical hormone replacement therapy (BHRT) uses hormones structurally identical to those the body produces. Compounded BHRT is prepared in the combinations and dosage forms your prescriber specifies.
What Bioidentical Means
Bioidentical hormones are derived from plant sources, usually wild yam or soy, and are processed to be molecularly identical to the hormones the body makes, including estradiol, estriol, progesterone, testosterone and DHEA. Because the molecule is the same, it binds to the same receptors.
The Hormones We Prepare
Estradiol (E2) and estriol (E3), including Bi-Est, which is estradiol and estriol together. Progesterone. DHEA. Testosterone, including a cream prepared for women. Which hormone, which strength and which base are your prescriber's decisions, written on the prescription; we prepare what is written.
The Dosage Forms
Estrogens and testosterone are prepared as topical or vaginal preparations: a hypoallergenic cream, an olive oil base topical, or a vaginal preparation. Testosterone is poorly absorbed when it is taken by mouth. Oral capsules are used for progesterone and DHEA. What we do not make: hormone pellets, hormone patches, injectables of any kind, and troches or lozenges.
Lab Work Belongs to Your Prescriber
Your prescriber orders and interprets any lab work and decides what your results mean for your therapy. We prepare what the prescription specifies. If you want to understand the panels prescribers commonly use, see our pages on labs for bioidentical hormone therapy and saliva hormone testing.
Sensitivities We Can Work Around
If you react to dyes, fillers, preservatives or a particular base, tell your prescriber and tell us. A hypoallergenic base exists for exactly this reason, and a pharmacist reviews every formulation before it is prepared.
Weight Loss & GLP-1/GIP Therapies
Semaglutide and tirzepatide act on receptor pathways involved in appetite regulation and blood sugar control. Whether either is appropriate for you is a decision for your prescriber.
What GLP-1 Means
GLP-1 stands for glucagon-like peptide-1, a hormone the gut releases after eating. It is involved in signaling fullness to the brain, in the rate at which the stomach empties, and in insulin regulation. Semaglutide is a GLP-1 receptor agonist, meaning it acts on that same receptor.
Dual GLP-1/GIP
Tirzepatide is a dual GLP-1/GIP receptor agonist, meaning it acts on two receptor pathways involved in appetite regulation and blood sugar control. GIP stands for glucose-dependent insulinotropic polypeptide.
This Is a Prescriber's Decision
A licensed prescriber decides whether any of this is appropriate for a particular patient, what is prescribed, and at what strength. We prepare what the prescription specifies.
Skin Science & Compounded Dermatology
Compounded topical preparations let a prescriber combine active ingredients in one base, at the strength they specify, rather than working from what happens to be on a shelf.
Retinoids
Tretinoin and other vitamin A derivatives are among the most studied topical dermatology ingredients; they act on the rate at which skin cells turn over. Compounded tretinoin can be prepared at the concentration your prescriber specifies, which matters for patients whose skin does not tolerate a standard commercial strength.
Antioxidant Ingredients
Vitamin C as L-ascorbic acid, along with niacinamide, vitamin E and melatonin, are antioxidants used in topical preparations. We prepare them singly or in combination, in the base and at the concentration the prescription calls for.
Pigmentation Preparations
For melasma and uneven pigmentation, prescribers commonly write hydroquinone, on its own or combined with tretinoin and a corticosteroid, and niacinamide. Each ingredient acts on a different step in how pigment is produced and transferred, which is why they are often combined in a single preparation.
Hair Loss & Restoration
Hair loss has many causes, including hormonal change, stress, nutritional deficiency and autoimmune conditions. Compounded topical preparations can combine several active ingredients in a single application.
The Hair Cycle
Hair grows in a cycle: anagen (growth), catagen (transition) and telogen (rest and shedding). DHT (dihydrotestosterone), stress hormones, nutritional deficiency and inflammation can all shift more hairs into the shedding phase. Which of those is behind a particular person's hair loss is what a prescriber works out first.
Multi-Ingredient Topical Preparations
A compounded hair preparation can bring together ingredients that act at different points: minoxidil, which acts on blood flow at the follicle; finasteride or dutasteride, which act on DHT; tretinoin, which affects how the other ingredients are absorbed; and latanoprost and melatonin, which act on the growth phase. Your prescriber chooses the combination and the strengths.
Types of Hair Loss
Androgenetic alopecia, or pattern hair loss, is the most common form and is linked to genetics and DHT sensitivity. Telogen effluvium, triggered by stress, illness, surgery or hormonal change, causes widespread temporary shedding. Alopecia areata is an autoimmune condition causing patchy loss. Iron stores are worth discussing with your prescriber as well.
If the Strength Changes
If your prescriber adjusts the formula or the strength, send us the new prescription and we will prepare it to match. We fill the number of refills your prescriber approves. When those run out, or the strength changes, a new prescription is needed for the next fill.
Men's Health & Hormones
Men's hormone therapy covers more than testosterone. Compounding is how a prescriber gets a strength or a combination that is not available commercially.
Testosterone
Testosterone is a Schedule III controlled substance and is prescribed by a licensed prescriber. We prepare it as a hypoallergenic cream, an olive oil base topical or a topical gel, at the strength on the prescription. Testosterone is poorly absorbed when it is taken by mouth, so we do not compound it as a tablet or an oral capsule.
Alongside Testosterone
Prescribers also write clomiphene, which acts on the hypothalamic-pituitary axis and is sometimes used where fertility is a consideration, anastrozole, which acts on the conversion of testosterone to estrogen, and DHEA. Finasteride and dutasteride are written for hair. Each of these is a prescriber's decision for an individual patient.
Commercially Available Products
Some of what a men's health prescription calls for is a commercially manufactured product rather than a compounded one. Sildenafil and tadalafil tablets are examples; we dispense those on a prescription rather than compounding them.
Low Dose Naltrexone (LDN)
Naltrexone is commercially manufactured in a single, much higher strength. Low dose therapy calls for smaller strengths, and compounding is the only route to them.
Why It Has to Be Compounded
Naltrexone is commercially manufactured in a single, much higher strength, and the low strengths used in low dose therapy are not available as a manufactured product. Preparing a strength no manufacturer offers is exactly what Section 503A allows when a prescriber writes for it.
How We Prepare It
We prepare LDN as an oral capsule or a tablet, depending on the strength your prescriber specifies. It is a non-sterile preparation, made to order for the patient named on the prescription. Your prescriber decides whether LDN is appropriate for you, at what strength, and for how long.
Antiparasitic & Ivermectin Therapy
Ivermectin and mebendazole are antiparasitic medications. We prepare them against individual prescriptions, and in Tennessee there is a second route through a collaborative pharmacy practice agreement.
How Antiparasitics Work
Ivermectin binds to glutamate-gated chloride channels in parasite nerve and muscle cells, which paralyzes the organism. Mebendazole interferes with glucose uptake in parasites. Both are long-established medications, prescribed by a licensed prescriber for a particular patient.
The Forms We Prepare
We prepare ivermectin as a tablet. Mebendazole is prepared as an oral capsule. Your prescriber specifies the strength and the quantity, and that is what we prepare.
Where a Prescription Is Required
Outside Tennessee, ivermectin requires a prescription from your own licensed prescriber, who can send it to us. For patients in Tennessee, some protocols are covered by our collaborative pharmacy practice agreement (Tenn. Code 63-10-224), where a licensed pharmacist reviews your request and decides whether dispensing is appropriate. Dispensing is never guaranteed.
ENT & Sinus Compounding
Ear, nose and throat prescriptions often call for a preparation that puts the active ingredient where the problem is, rather than sending it through the whole body.
Nasal and Sinus Preparations
Prescribers write combination nasal sprays, such as azelastine with mometasone, or olopatadine with mometasone and montelukast; nasal irrigation preparations, including budesonide as a rapid-dissolve tablet and levocetirizine as a capsule, both of which dissolve into a saline rinse; and antimicrobial irrigations where a prescriber has identified a specific organism. Betahistine tablets are also compounded.
Who Decides What Goes In
The combination, the strengths and the organism being targeted are decisions your ENT or prescriber makes and writes on the prescription. We prepare it. If your practice wants to work through its formulary with us, our ENT practice page covers how that works.
How to Use a Sinus Rinse
Using a sinus rinse correctly matters. The video below, from Mayo Clinic, is a step-by-step demonstration of the technique with a saline or medicated solution.
Quality & Safety in Compounding
ProCompounding is a PCAB-accredited, LegitScript-certified 503A pharmacy in Johnson City, Tennessee, licensed in all 50 states and the District of Columbia. We compound non-sterile preparations only.
USP Standards
The United States Pharmacopeia sets the standards compounding pharmacies work to. We compound under USP 795 for non-sterile preparations and USP 800 for hazardous drugs. Those standards cover ingredient sourcing, environmental controls, staff training and documentation.
PCAB Accreditation
PCAB accreditation is voluntary and involves an on-site survey of how a pharmacy actually compounds, plus a documented quality assurance program. Fewer than 1% of compounding pharmacies are PCAB accredited. You can verify our accreditation, our LegitScript certification and our state licenses yourself.
PCAB-accredited compounding pharmacyVerify a pharmacy's license
Ingredient Sourcing
Every active pharmaceutical ingredient we use comes from an FDA-registered, cGMP-compliant supplier. We check the certificate of analysis for identity, potency and purity before a raw material is accepted into inventory.
Testing and Dating
Potency testing is performed periodically through a third-party laboratory, depending on the preparation. Our quality program also covers weight checks, documented batch records and beyond-use dating.
Common Questions
Do I need a prescription for a compounded medication?
Yes. A 503A pharmacy prepares each medication for the patient named on a prescription from a licensed prescriber. We do not prescribe. The one exception is in Tennessee, where some ivermectin protocols are covered by a collaborative pharmacy practice agreement and are reviewed by a pharmacist.
Are compounded medications FDA approved?
No. Compounded preparations are not reviewed or approved by the FDA for safety or efficacy. They are prepared by state-licensed pharmacies under Section 503A, using pharmaceutical-grade ingredients, and they are regulated primarily by state boards of pharmacy.
Where can you ship?
We are licensed in all 50 states and the District of Columbia, so a prescription can be sent to us wherever you live. Requirements vary by preparation. Call 423-975-0597 for current pricing and shipping options for your state.
How long does compounding take?
We have a 48-hour compounding time on most preparations. Shipping time is additional and varies by destination.
Can you leave out a dye or filler I react to?
Often, yes. Tell your prescriber and tell us what you react to. Hypoallergenic bases exist for this reason, and a pharmacist reviews the formulation before it is prepared.
How do I move a prescription from another pharmacy?
Send us the details and we will contact your current pharmacy. Our prescription transfer page walks through what we need. Transfer a prescription.
Ready to Get Something Filled?
Ask your prescriber to send the prescription to ProCompounding, or transfer one you already have. Call 423-975-0597 for current pricing and shipping options for your state.
Compounded preparations are not reviewed or approved by the FDA for safety or efficacy. This page is for education and reflects what we see in clinical practice; it is not medical advice. Decisions about your care rest with your prescriber, who also orders and interprets any lab work.