Topical vs Oral Finasteride: FDA Status, Trials and Cost

Below: what each one is, what the trials found, what the FDA has heard about topical side effects, and what each costs. Prices checked November 14, 2026. We do not give doses. Your prescriber picks the product and the amount.

The short answer

Every topical price we track, cheapest first, is on our topical finasteride cost page. Plain tablets are on the finasteride price page.

What oral finasteride is

Oral finasteride is a tablet. It lowers DHT, a hormone made from testosterone that shrinks hair roots on the top of the head in men with pattern hair loss. The FDA approved Propecia for hair loss on December 19, 1997, according to the same FDA page. Generic tablets are the same drug. Our hair loss drugs FDA status guide lists the status of each hair loss drug.

The Propecia label says it treats "male pattern hair loss (androgenetic alopecia) in MEN ONLY" (DailyMed: Propecia label). Androgenetic alopecia is the medical name for male pattern hair loss. The label also says "daily use for three months or more is necessary before benefit is observed" (label). Our finasteride timeline walks through what the trials found month by month.

The tablet has a coating. The FDA notes that "The coating on FDA-approved finasteride tablets prevents contact with finasteride during normal handling, provided the tablets have not been broken or crushed" (FDA). That matters for anyone pregnant in the home.

What topical finasteride is

Topical finasteride is the same drug put on the scalp instead of swallowed. The idea is to treat the hair roots while less of the drug reaches the rest of the body.

In the US, you can only get it from a compounding pharmacy. Compounding means a pharmacy mixes a product for a patient instead of a drug maker producing an approved one. The FDA states that "Compounded drugs are not FDA-approved, which means FDA has not evaluated their safety, effectiveness or quality prior to marketing" (FDA alert).

Most programs sell it mixed with minoxidil, and some add tretinoin or other ingredients. So two "topical finasteride" products from two sellers can be quite different. Read the ingredient list on the plan, not just the name. Dutasteride also comes as a gel, covered in our topical dutasteride guide.

Finasteride cream, gel, spray or solution

People search for finasteride cream, but the form matters less than the status. Creams, gels, sprays and solutions are all compounded in the US. None has an FDA label. Sellers we track mostly offer a spray, a gel or a liquid solution. If you want a cream, ask the program which form its pharmacy makes.

What the trials found

A European trial of a topical spray, 2022. Researchers gave 458 men a topical finasteride spray, the oral tablet, or a dummy spray for 24 weeks. The men did not know which one they had. The spray grew more hair than the dummy. Hair counts on the spray were "numerically similar between topical and oral finasteride." The authors wrote: "Its effect is similar to that of oral finasteride, but with markedly lower systemic exposure and less impact on serum DHT concentrations" (Piraccini et al., J Eur Acad Dermatol Venereol, PubMed).

In plain words: in that trial, the spray worked about as well as the pill over six months, and much less of the drug showed up in the blood. That spray was a drug maker's product tested in a formal trial. It is not the same thing as a US compounded mix.

A trial in China, 2026. A second trial gave 270 men a topical spray or a dummy spray for 24 weeks. The authors concluded that the spray "increased hair growth and showed good safety and tolerability profile" (Zhou et al., Chin Med J, PubMed). It did not test the spray against the tablet.

The evidence for the tablet is longer. The Propecia label reports results out to five years. The topical trials ran for 24 weeks.

Side effects: is topical safer?

The hope is fewer side effects, because less drug reaches the blood. The evidence so far is mixed.

What the FDA heard. In April 2025 the FDA counted "32 cases reported to the FDA Adverse Event Reporting System between 2019 and 2024" for compounded topical finasteride. It wrote that "Most of the reports FDA has received state the adverse events continued to persist after product discontinuation" (FDA alert). The reported problems matched those listed for the tablet, such as erection trouble, low sex drive, low mood and brain fog.

What a review of FDA reports found. A 2026 study looked at the same FDA report system. It found "Signals for PFS-like AEs were detected with topical finasteride, but were less frequent than with oral finasteride" (Gupta et al., Int J Dermatol, PubMed). In plain words: reports of lasting side effects showed up for both, and less often for the topical. Report counts cannot prove what caused a problem, and the authors say so.

Risks only the topical has. The FDA lists scalp reactions "including irritation, erythema, dryness/scaling, stinging and burning." Erythema means redness. It also warns of a "greater potential risk for inadvertent exposure to others, specifically females, through transfer of applied product" (FDA alert). A wet scalp can pass the drug to a partner or child by touch. A coated tablet does not.

For the full side effect picture, see our finasteride side effects guide and our page on post-finasteride syndrome.

Topical finasteride cost, seller by seller

These are the lowest topical plans we track, cheapest first. Every one is compounded, and most also contain minoxidil. Each price is live from our price table, read on the seller's own page.

The cheapest figures often need a 3-, 6- or 12-month plan. A topical with two or more drugs in it costs more than the plain tablet at almost every seller. The plain tablet is $14 a month at Keeps and $16 at Ro, our top-scored program.

Which one suits whom

• You want the approved option with the longest record. That is the oral tablet.
• You want one product for finasteride and minoxidil. A topical mix does that, at a higher price. Our finasteride and minoxidil guide compares a combo product with two separate generics.
• You worry about side effects. Lower blood levels are the reason people try the topical. The FDA reports show it can still cause the same problems, so ask how the program follows up.
• Someone pregnant lives with you. Ask your prescriber about transfer by touch before choosing a topical.

To compare whole programs, see best hair loss treatment online and our ranked best programs.

Sources and read dates

Each source below was read on November 14, 2026.

• FDA, alert on compounded topical finasteride, content current as of April 22, 2025.
• DailyMed, Propecia label, revised 8/2022.
• PubMed, Piraccini et al., 2022; Zhou et al., 2026; Gupta et al., 2026.
• Seller prices: each seller's own page, on the date shown on our hair loss price page.