147 and 73trial-typed PubMed papers, minoxidil and finasteride in hair loss
Evidence · Hair loss
How deep is the trial record for minoxidil and finasteride in hair loss
Minoxidil has 147 randomized-trial papers on PubMed and finasteride 73, which is a real record. It tells you how much testing exists, not how well either drug will work for you.
On 2 November 2026, PubMed held 147 randomized-trial papers on minoxidil in hair loss and 73 on finasteride. Both records are real, and US drug pages state plain limits for both. These counts show depth of record, not how well either drug works.
Counts from published PubMed queries (minoxidil 30 October 2026, finasteride 2 November 2026); drug facts from MedlinePlus, read 2 November 2026.
The short version
147minoxidiltrial-typed papers on PubMed
73finasteridetrial-typed papers on PubMed
4 monthsminoxidil, at leastbefore results, per MedlinePlus
3 monthsfinasteride, at leastbefore any improvement, per MedlinePlus
Hair loss: claims against the recordwhat gets said, and what the record shows, read 30 October 2026
They sayA hair product with lots of trials is guaranteed to work.
Depth, not effect
A trial count is depth of record. It does not measure how big the effect is or whether it will work for you. See the receipt
They sayStart it and you are done for life.
Not that simple
MedlinePlus says most new hair from minoxidil is lost within a few months after it is stopped. See the receipt
They sayThe side effects are just internet scare stories.
A risk flag
The government page lists them, including sexual side effects and mood changes for finasteride. Read that list, not a forum. See the receipt
What are these two drugs?
Minoxidil is used to stimulate hair growth and to slow balding, according to the US National Library of Medicine.[1] Finasteride, in its hair-loss use, treats male pattern hair loss by blocking the body's production of a male hormone in the scalp.[2]
Read the reasoning
They are different drugs in different forms, and the finasteride label says it is indicated for male pattern hair loss in men only.[3] Whether either suits you is a question for a clinician. For the hype-versus-trials view of each, see the minoxidil Copium Meter and the finasteride one.
Papers typed as randomized controlled trials, and as systematic reviews or meta-analyses, for each drug with hair loss in the query. Minoxidil was counted 30 October 2026 and finasteride 2 November 2026. Both count papers tagged as trials, not effect or quality.Read the reasoning
The "randomized controlled trial" tag is PubMed's own publication type.[6] That puts both drugs in the middle of the evidence ladder, well above BPC-157, which has none typed as such, though it says nothing about effect size, study quality, or who was studied.
Every PubMed paper matching the query, whatever its type. Trials are a small slice of the whole record: 8 percent for minoxidil and 7 percent for finasteride.
What else is registered?
ClinicalTrials.gov lists 104 interventional studies matching minoxidil with alopecia or hair loss[7] and 33 matching finasteride[8]. A registration is a plan on file, and we have not assessed any of them.
Interventional studies listed in the ClinicalTrials.gov registry for each drug with alopecia or hair loss, read 2 November 2026. A registration is a plan on file, not a finished or positive result, and we have not assessed any of them.
How long before anything shows?
MedlinePlus says you must use minoxidil for at least 4 months, and possibly up to a year, before you may see results.[1] For finasteride it says it may take at least 3 months before any improvement.[2]
Minimum times before improvement, as stated on the two MedlinePlus pages read 2 November 2026. They are guidance from a drug-information page, not a promise of any result.
A before-and-after photo from a few weeks is therefore not a result under either page's own timeline.
What happens if you stop?
For minoxidil, MedlinePlus says most new hair is lost within a few months after the drug is stopped, and that it does not cure baldness.[1] It also says minoxidil has no effect on receding hairlines.
That is a plain limit from the regulator-side reference, and a good question to ask any seller.
How to read a hair-loss claim
1. Which drug, and which form? A lotion and a tablet are different things with different risks.
2. How long did the trial run? The government pages say months, so a two-week result is not the claim.
3. What happens when you stop? Ask for that number.
4. Side effects are listed by the regulator, not by the seller. Read that list before the testimonials.
5. This is a prescribing question: a clinician decides.
What do the government pages list as risks?
For finasteride, MedlinePlus lists inability to have or maintain an erection, decreased sexual desire, problems with ejaculation, pain in the testicles, and new or worsening depression among side effects to report.[2] It also says the drug is only for use in men, and that women who are or may become pregnant should not touch broken or crushed tablets because it may harm the fetus.[3]
For minoxidil, it lists symptoms that need a doctor right away, including difficulty breathing, rapid heartbeat, chest pain, and swelling of the face, ankles, hands or stomach.[1] Anyone with these symptoms should contact a clinician.
This page measures only the first box and quotes the second. The last two are where a prescriber earns the fee.
How should you use this page?
If you are weighing a hair-loss claimDepth of record: real, not decisiveBoth drugs have a genuine trial record, which a peptide with none does not. A count cannot tell you what to expect for your own scalp. Whether either suits you is a question for a clinician.
If you are being sold a result in weeksTiming: months, not weeksThe US government pages say 3 to 4 months at the least, and up to a year for minoxidil. Treat a faster promise as a claim to check.
If you are reading the side effectsRisk list: read the regulator's versionThe sexual and mood effects of finasteride are on the government page. Raise them with a prescriber before, not after.
How this page was built
Method
Counts are PubMed records matching a published title and abstract query plus a publication-type filter ("Randomized Controlled Trial", or "Systematic Review" or "Meta-Analysis"). Minoxidil used the ladder's query and was counted 30 October 2026, and finasteride used a query of the same shape on 2 November 2026. Drug facts are quoted or closely paraphrased from the two MedlinePlus pages, which were read in full on 2 November 2026.
Queries are broad and will include some off-topic papers, and publication-type tags can be loose, so treat the counts as depth of record (our grading rules are on the methodology page, and every comparison lives on the ladder hub). Nothing here measures effect size, study quality or safety outcomes, covers oral minoxidil, or is medical advice.
The exact queries
Minoxidil: minoxidil[tiab] AND (alopecia[tiab] OR hair[tiab])
Finasteride: (finasteride[tiab] AND (alopecia[tiab] OR hair[tiab]))
References
abcd MedlinePlus (National Library of Medicine). Minoxidil topical: drug information. medlineplus.gov, read 2 November 2026.
abc MedlinePlus (National Library of Medicine). Finasteride: drug information. medlineplus.gov, read 2 November 2026.
ab DailyMed (National Library of Medicine). Propecia (finasteride) tablet label, version 9, updated 14 October 2024: indicated for male pattern hair loss in men only; contraindicated in women who are or may be pregnant. dailymed.nlm.nih.gov, read 2 November 2026.
↑ PubMed search for minoxidil and hair loss with the publication-type filter; the query is printed in the method section. pubmed.ncbi.nlm.nih.gov, read 30 October 2026.
↑ PubMed search for finasteride and hair loss with the publication-type filter; the query is printed in the method section. pubmed.ncbi.nlm.nih.gov, read 2 November 2026.
↑ National Library of Medicine. MeSH publication type: Randomized Controlled Trial. ncbi.nlm.nih.gov.
↑ ClinicalTrials.gov interventional studies matching minoxidil with alopecia or hair loss, read 2 November 2026. clinicaltrials.gov, read 2 November 2026.
↑ ClinicalTrials.gov interventional studies matching finasteride with alopecia or hair loss, read 2 November 2026. clinicaltrials.gov, read 2 November 2026.
FAQ
How many randomized trials are there on minoxidil for hair loss?
PubMed held 147 papers typed as randomized controlled trials and 78 systematic reviews or meta-analyses for the ladder's minoxidil query on 30 October 2026.
How many randomized trials are there on finasteride for hair loss?
PubMed held 73 papers typed as randomized controlled trials and 53 systematic reviews or meta-analyses for finasteride with hair loss in the query on 2 November 2026.
How long does minoxidil take to work?
MedlinePlus says to use it for at least 4 months, and possibly up to a year, before expecting results. It also says most new hair is lost within a few months after stopping.
What side effects does MedlinePlus list for finasteride?
It lists inability to have or maintain an erection, decreased sexual desire, problems with ejaculation, pain in the testicles, and new or worsening depression. A prescriber is the right person to discuss them with.
Does a high trial count mean it will work for me?
No. It means the record is deep. Effect size, study quality and your own situation are separate questions for a clinician.
Bottom line
Minoxidil and finasteride both have real trial records, and both come with timelines and risks that the US government states plainly. Use the count to see that the record exists, then ask a clinician what fits you.