Compounded bioidentical hormones vs FDA-approved HRT: what to know
No. Compounded bioidentical hormones have not been shown to be safer or more effective than FDA-approved hormone therapy, and FDA-approved bioidentical estradiol and progesterone already exist. A National Academies of Sciences, Engineering, and Medicine (NASEM) report commissioned by FDA found insufficient evidence to support the clinical utility of compounded bioidentical hormone therapy, and the American College of Obstetricians and Gynecologists (ACOG) recommends FDA-approved products first, reserving compounding for specific needs such as an ingredient allergy or a dose that is not commercially available.
If a clinic tells you its custom compounded hormones are "natural" and therefore safer, that is a marketing claim, not an evidence-based one. Here is what the official sources actually say, and how to use that information when you compare longevity clinics for hormone optimization.
What "bioidentical" actually means
A bioidentical hormone has the same molecular structure as the hormone your body makes. Estradiol is the main estrogen your ovaries produce before menopause; progesterone is the hormone that balances estrogen's effect on the uterine lining. The word describes the molecule. It says nothing about how a product is made, how consistent the dose is, or whether anyone has reviewed it for safety.
This is the point most clinic pages skip: FDA-approved bioidentical hormones are widely available. Estradiol comes in FDA-approved patches, gels, sprays, tablets and vaginal products, and progesterone comes as FDA-approved oral micronized capsules. So the real choice is not "bioidentical versus synthetic." It is "FDA-approved versus compounded."
| Feature | FDA-approved bioidentical HRT | Compounded bioidentical hormones (cBHT) |
|---|---|---|
| Typical hormones | Estradiol, micronized progesterone | Estradiol, estriol, progesterone, testosterone, DHEA, often mixed together |
| FDA review of safety and effectiveness | Yes, before the product is sold | No |
| Dose consistency | Manufactured to approved specifications | Can vary between batches and pharmacies |
| Labeling | Standardized label and patient information | No standardized labeling requirement |
| Adverse event reporting | Manufacturers must report to FDA | More limited |
| Common forms | Patch, gel, spray, tablet, capsule, vaginal | Creams, troches, capsules, pellets |
For a broader look at where hormone therapy is heading, see our post on the next generation of hormone replacement therapy.
Compounded hormones: no FDA approval, variable dosing, no standard label
Compounding itself is legitimate. A licensed pharmacist prepares a medication for an individual patient, often because a commercial product does not fit that patient's needs. The problem is what compounding does not include.
Compounded drugs are not FDA-approved. That means FDA does not review their safety, effectiveness or manufacturing quality before you use them. The amount of hormone you actually absorb from a compounded cream can differ from what the prescription says, and potency can vary from one batch to the next. Without a standardized label, you may not receive the same written information about risks and warnings that comes with an approved product.
Compounded formulas are often marketed as "customized to your levels." That sounds precise, but it usually relies on hormone testing that the evidence does not support for dosing menopausal therapy, which we cover below.
What the National Academies found, and how FDA responded
FDA asked the National Academies to study the clinical utility of compounded bioidentical hormone therapy. The resulting 2020 report, summarized on FDA's NASEM study page, reached conclusions that every patient considering cBHT should know:
- There was insufficient high-quality evidence to support the clinical utility of compounded bioidentical hormones for treating menopause symptoms.
- The committee raised safety concerns, including doses that may be too low or too high and a lack of information given to patients.
- It recommended restricting compounded hormone use to patients with a documented allergy to an ingredient in an FDA-approved product, or a documented need for a dosage form that is not commercially available.
- It recommended that FDA review whether certain hormones belong on its list of drugs that are demonstrably difficult to compound.
FDA, which commissioned the study, has said it is reviewing the report's recommendations as it shapes its compounding policy. The practical takeaway does not depend on that outcome: today, compounded hormones have a thinner evidence base than approved products.
When ACOG says compounding makes sense
ACOG's 2023 clinical consensus on compounded bioidentical menopausal hormone therapy lines up closely with NASEM. ACOG recommends FDA-approved hormone therapy over compounded preparations for most patients. It describes compounding as reasonable in narrower situations:
- You are allergic to an ingredient in an FDA-approved product, such as a dye, adhesive or filler.
- You need a dose or formulation that no approved product offers.
There is one safety issue worth stating plainly. If you have a uterus and take estrogen, you need a progestogen to protect the uterine lining. That protection is well established for FDA-approved options, but it has not been established in the same way for compounded progesterone products. This is a question to ask directly before starting any regimen.
For women in their 40s and beyond weighing their options, our guide to longevity strategies for women in their 40s and beyond puts hormone therapy in the context of sleep, strength and metabolic health.
Pellets and saliva testing: what the evidence says
Two practices show up repeatedly on longevity clinic pages, and both deserve scrutiny.
Hormone pellets. Pellets are small implants placed under the skin that release estradiol or testosterone over several months. Once inserted, the dose cannot be adjusted or easily stopped. ACOG does not recommend compounded pellets, citing a lack of safety and effectiveness data and the risk of hormone levels rising above the normal physiologic range. NASEM also flagged pellets among its concerns.
Saliva testing. Saliva hormone levels shift with time of day, food, the product used and individual variation, and they do not reliably reflect what is happening in your body. ACOG does not recommend saliva testing to guide menopausal hormone therapy. Dosing for menopause symptoms is guided mainly by how you feel and how you tolerate treatment, not by chasing a target number.
That does not make blood work pointless. A thorough panel helps rule out other causes of symptoms, such as thyroid problems, and gives you a baseline for lipids, blood sugar and organ function before and during treatment. That is the role labs play in a careful plan.
Labels, warnings and adverse event reporting
One underrated benefit of FDA-approved hormone therapy is the label. Approved products come with standardized prescribing information and patient materials that describe risks, and FDA can update that labeling as new evidence emerges. FDA has reviewed menopausal hormone therapy labeling over time, so ask your clinician to walk you through the current label for any product you are prescribed.
Compounded preparations have no standardized label, and safety tracking is weaker. FDA has acknowledged this gap in its statement on improving adverse event reporting for compounded drugs, noting that better reporting is needed so problems with compounded products can be found and addressed. When side effects go unreported, patterns that would trigger a warning can go unnoticed.
How to judge a longevity clinic's hormone program
Whether you are comparing Fountain Life, Human Longevity, Defy Medical, Marek Health, a local practice or BioCure, the same questions apply. Use these criteria, which come straight from the FDA, NASEM and ACOG sources above.
| Question to ask | What a strong answer looks like |
|---|---|
| Is this product FDA-approved or compounded? | A clear answer, named product and form |
| If compounded, why? | A specific reason, such as an allergy or an unavailable dose |
| How will my dose be adjusted? | Symptom review and follow-up visits, not saliva tests |
| What labs come first? | A baseline panel including hormones, thyroid, lipids and metabolic markers |
| Do you use pellets? | An honest discussion of the evidence and the inability to adjust a dose |
| How does pricing work? | Clear terms on membership vs a la carte, and whether labs, consults and medication are included |
| Who prescribes and follows up? | A physician-led team with scheduled monitoring |
The men's side has its own standard. The Endocrine Society's testosterone therapy guideline calls for diagnosing low testosterone only when symptoms are present and morning testosterone is consistently low on repeat testing, followed by ongoing monitoring during treatment. A clinic that skips the repeat test is skipping the guideline.
Here is where BioCure fits. We are a physician-led telehealth longevity clinic with a clinic in Fort Lauderdale, licensed to treat patients in 47 states, with appointments in person or by video. Our comprehensive female panel covers hormones including estrogen and progesterone, along with thyroid, lipids, metabolic and organ markers, and every result is reviewed with you 1:1. See our diagnostic panels. The video consultation is $199 and can be credited back with a membership, and results typically arrive in 7 to 14 days. We do not bill insurance directly, though many patients use HSA or FSA funds with the invoices we provide. If you need insurance to cover your prescriptions, a practice that bills your plan may suit you better.
Frequently asked questions
Are bioidentical hormones safer than synthetic hormones?
"Bioidentical" only describes the molecule, not its safety. FDA-approved bioidentical estradiol and progesterone exist and have been reviewed for safety and effectiveness. Compounded bioidentical hormones have not been shown to be safer than either approved bioidentical or other approved hormone products.
Is compounded hormone therapy FDA approved?
No. Compounded drugs are not FDA-approved, so FDA does not review their safety, effectiveness or quality before use. Dosing can vary between batches, and there is no standardized label.
Can a saliva test tell me what hormone dose I need?
Not reliably. Saliva hormone levels vary with time of day, diet and the product used, and ACOG does not recommend saliva testing to guide menopausal hormone therapy. Dosing is usually adjusted based on your symptoms and how you tolerate treatment.
Are hormone pellets safe for menopause?
ACOG does not recommend compounded hormone pellets because safety and effectiveness data are lacking and levels can rise above the normal range. Once a pellet is placed, the dose cannot be adjusted or easily stopped.
When is compounded HRT actually a good idea?
ACOG and the National Academies describe compounding as reasonable when you are allergic to an ingredient in an FDA-approved product or need a dose or formulation that is not commercially available. Outside those situations, FDA-approved options are recommended first.
Does BioCure test hormones for women?
Yes. BioCure's comprehensive female panel covers hormones including estrogen and progesterone, plus thyroid, lipids, metabolic and organ markers. A physician reviews your results with you 1:1, and you can complete testing with an in-home phlebotomist or at a lab.
Longevity is not accidental, it is intentional, and that starts with knowing exactly what you are putting into your body and why. Ask every clinic, including ours, whether your hormones are FDA-approved or compounded, and expect a clear reason either way.
Let BioCure Health lead you in the right direction. Call or text us to schedule an introductory call at 754-206-0838. Your future self will thank you.