Compounded Topical Spironolactone: Dosage Forms
Spironolactone blocks androgen receptors, which is why it is used off label for hormonal acne and hair loss. Oral spironolactone is an approved drug, but no topical product is FDA approved in the United States. This guide covers the dosage forms, the published concentrations, and what the studies actually show.
What topical spironolactone is
Spironolactone is an aldosterone antagonist that also blocks androgen receptors, and that second property is why dermatology uses it. Androgens drive sebum production and contribute to pattern hair loss, so an agent that blocks androgen receptors has an obvious rationale in both conditions.
Spironolactone is FDA approved as an oral medication for cardiovascular and kidney related conditions. Its use in acne and hair loss is off label, and the topical route is a compounded preparation rather than an approved product.
A compounded topical is made individually by a pharmacy to the concentration and vehicle a prescriber specifies, under a valid prescription.
Why a prescriber chooses the topical route
The reasoning behind the topical route is to deliver the drug to the skin or scalp while keeping the amount reaching the rest of the body low. Oral spironolactone acts throughout the body, and some of its effects follow from that.
Applying it to the affected area is intended to concentrate the drug where androgen receptors in the skin are, rather than exposing the whole system. A systematic review of oral and topical spironolactone in androgenetic alopecia reported fewer side effects with topical use than with oral.
Lower systemic exposure is not zero systemic exposure. A drug applied to skin is still absorbed to some degree, and the safety points below apply to the topical route as well.
Dosage forms and vehicles
Topical spironolactone is compounded as a cream, a gel or a solution, and the form is chosen to suit the site of application. That choice is practical rather than clinical, and it strongly affects whether a patient keeps using the preparation.
| Form | Typical site | Why a prescriber picks it |
|---|---|---|
| Cream | Face and body | Familiar feel, suits dry or sensitive skin, spreads easily over a broad area |
| Gel | Face, especially oily skin | Lighter finish, absorbs quickly, less likely to feel heavy on acne prone skin |
| Solution | Scalp | Reaches the scalp through hair without leaving a greasy residue |
The vehicle carrying the drug matters as much as the form. It affects how the active moves into the skin, how stable the preparation stays through its beyond use date, and how it feels. A prescriber can name a vehicle preference or write pharmacist's choice and let us match it to the site and the concentration.
Concentrations used in published studies
Published studies of topical spironolactone have used 1 percent and 5 percent preparations, applied once or twice daily depending on the study. Those are the concentrations that appear in the literature, not a recommendation.
| Concentration | Form studied | Setting |
|---|---|---|
| 1 percent | Gel | Androgenetic alopecia, alone and combined with minoxidil |
| 5 percent | Gel | Acne vulgaris, including a randomized split face comparison |
| 5 percent | Cream | Acne vulgaris, small open label study |
| 5 percent | Solution | Androgenetic alopecia, combined with minoxidil solution |
Mixwell compounds to the concentration written on the prescription. The appropriate concentration for any patient is a clinical decision made by the prescriber, and this page is not a dosing recommendation.
What the evidence shows
The published evidence for topical spironolactone is encouraging but small. Most studies enrolled a few dozen patients, several ran without a placebo group, and several come from single centres.
The strongest comparison to date is a randomized split face study of 5 percent spironolactone gel against 0.1 percent adapalene gel for acne vulgaris, published in JAMA Dermatology in 2024. In androgenetic alopecia, studies have examined topical spironolactone alone and combined with minoxidil, and a 2023 systematic review of oral and topical spironolactone concluded that topical use carried fewer side effects than oral while noting the limits of the available data.
What the literature does not yet contain is a large multicentre randomized trial. Topical spironolactone is not an FDA approved treatment for acne or hair loss, and prescribers who use it do so at their own clinical discretion.
What is FDA approved instead
Clascoterone is an FDA approved topical androgen receptor inhibitor for acne, and it is the closest approved comparison to a compounded topical antiandrogen. Where an approved product fits the patient, that product is generally the appropriate first choice.
Other approved topical options for acne include retinoids such as adapalene and tretinoin, benzoyl peroxide, and topical antibiotics. For androgenetic alopecia, topical minoxidil is FDA approved and available over the counter. Oral spironolactone, while used off label in dermatology, is itself an approved drug.
Compounding earns its place when something specific does not fit, such as a concentration no manufactured product offers, a combination in a single preparation, a vehicle suited to a particular site, or a reaction to an ingredient in a commercial product.
Question about concentration, vehicle selection or combining actives in one preparation?
Call (909) 378-7301Side effects to know about
Spironolactone is an antiandrogen, and the most important safety consideration follows directly from that.
Because spironolactone blocks androgen receptors, it can affect the development of a male fetus. It should not be used during pregnancy or when pregnancy is possible except under a prescriber's direction, and anyone who could become pregnant should discuss this before starting. Local effects at the application site are the most commonly reported, including dryness, redness, irritation, itching and peeling. Spironolactone taken orally can raise blood potassium and can cause breast tenderness or enlargement and menstrual irregularity. Systemic absorption from a topical preparation is expected to be lower than from an oral dose, but it is not absent, and the prescriber decides whether any monitoring is appropriate. This list is not complete. Report any new symptom to your prescriber, and stop and contact them if the application site develops a significant rash.
Sending a prescription to Mixwell
State the concentration as a percentage, the dosage form, the total quantity and the directions including the application site. Note any additional actives you want combined into the same preparation.
- Write the concentration as a percentage and specify cream, gel or solution.
- State the total quantity in grams or millilitres and the directions including the site.
- Note the vehicle preference or write pharmacist's choice, and list any additional actives.
- Call (909) 378-7301 to confirm the formulation and current turnaround time.
Spironolactone topical, concentration as a percentage, dosage form as cream, gel or solution, vehicle preference or pharmacist's choice, total quantity, directions stating the application site and frequency. Note any additional actives to be combined.
- Pharmacy
- Mixwell Compounding Pharmacy
- Address
- 13788 Roswell Ave, Ste 158, Chino, CA 91710
- Phone
- (909) 378-7301
- Fax
- (909) 378-7071
- info@mixwellpharmacy.com
The wording above is a formatting example only. All clinical parameters are determined by the prescriber.
Serving prescribers and patients in California
Mixwell Compounding Pharmacy is located in Chino, CA and works with dermatology, women's health and primary care prescribers across the Inland Empire, Los Angeles County and Orange County. Patients can collect their preparation at the Chino pharmacy, and delivery is available across California.
- Chino
- Chino Hills
- Ontario
- Rancho Cucamonga
- Upland
- Pomona
- Diamond Bar
- Corona
- Riverside
- Eastvale
- Brea
- Fullerton
Common questions
Is topical spironolactone FDA approved?
No. Spironolactone is FDA approved as an oral medication for cardiovascular and kidney related conditions. There is no FDA approved topical spironolactone product in the United States, and use for acne or hair loss is off label. A compounded topical is prepared individually under a valid prescription.
What concentrations have been studied?
Published studies have used 1 percent and 5 percent preparations, in gel, cream and solution forms. Those are the concentrations that appear in the literature rather than a recommendation. Your prescriber determines what is appropriate for you.
Why topical instead of oral spironolactone?
The intent of the topical route is to deliver the drug to the skin or scalp while keeping the amount reaching the rest of the body low. A systematic review reported fewer side effects with topical than with oral use. Lower systemic exposure is not zero, and your prescriber decides which route suits you.
Can it be used if pregnancy is possible?
Spironolactone blocks androgen receptors and can affect the development of a male fetus. It should not be used during pregnancy or when pregnancy is possible except under a prescriber's direction. Discuss this with your prescriber before starting.
Is there an approved topical alternative?
Yes. Clascoterone is an FDA approved topical androgen receptor inhibitor for acne. Other approved topical acne options include adapalene, tretinoin, benzoyl peroxide and topical antibiotics, and topical minoxidil is approved for hair loss. Where an approved product fits, it is generally the appropriate first choice.
Can spironolactone be combined with other actives?
Depending on compatibility, additional actives can be included in a single preparation when the prescriber specifies them. Studies in hair loss have examined topical spironolactone combined with minoxidil. Our pharmacists review each prescription for formulation suitability.
Does Mixwell accept insurance?
Mixwell does not accept insurance. Call (909) 378-7301 to discuss current pricing.
Key Takeaways
- Spironolactone blocks androgen receptors, which is the rationale for its off label use in hormonal acne and androgenetic alopecia.
- Topical spironolactone is compounded as a cream, gel or solution, with the form chosen to suit the application site.
- Published studies have used 1 percent and 5 percent preparations, and the strongest comparison to date is a randomized split face study against adapalene published in JAMA Dermatology in 2024.
- Clascoterone is an FDA approved topical androgen receptor inhibitor for acne, and where an approved product fits it is generally the appropriate first choice.
- Spironolactone can affect the development of a male fetus, and compounded preparations are not FDA approved and require a valid prescription.
Sources
- Topical 5% spironolactone gel versus 0.1% adapalene gel for acne vulgaris: a randomized split face study. JAMA Dermatology. 2024;160(1):88-92. doi:10.1001/jamadermatol.2023.4481
- The efficacy and safety of oral and topical spironolactone in androgenetic alopecia treatment: a systematic review. 2023. PMID 36923692
- Abdel-Raouf H, Aly UF, Medhat W, et al. A novel topical combination of minoxidil and spironolactone for androgenetic alopecia: clinical, histopathological, and physicochemical study. Dermatologic Therapy. 2021. doi:10.1111/dth.14678
- Efficacy and safety of topical spironolactone 5% cream in the treatment of acne: a pilot study. PMC8247934
- U.S. Food and Drug Administration. Spironolactone oral product labeling, and clascoterone topical cream prescribing information.
- U.S. Food and Drug Administration. Compounding and the FD&C Act, Section 503A.