Finasteride vs Minoxidil: What Each One Does and Which to Start First

By the Finasteride Fast editorial team · researched from published studies and FDA labeling; not reviewed by a clinician

They get mentioned in the same breath, but they work on completely different parts of the problem. Knowing which part each one handles makes the "which first" question much easier.

Short answer: finasteride works on the cause of male pattern hair loss by lowering DHT, the hormone that shrinks susceptible follicles. Minoxidil works on growth, keeping follicles in their growing phase longer, without touching DHT. Because they do different jobs, many prescribers treat them as partners rather than rivals. If you can only start one, the deciding factors are how fast you are losing hair, whether you can get a prescription, and how you feel about each drug's trade-offs. Your prescriber makes the final call.

Two drugs, two jobs

Finasteride: stopping the slide

Male pattern hair loss happens when genetically sensitive follicles miniaturize under the influence of DHT. Finasteride inhibits the enzyme that makes most of that DHT, so it goes after the driver directly. In the trials that led to its approval, it was studied in men with mild-to-moderate loss at the vertex or anterior mid-scalp. The label notes that its efficacy at the temples (bitemporal recession) hasn't been established. Its strongest role is holding what you have and, in many men, thickening miniaturized hair. Our explainer on how finasteride works, linked below, covers the biology in more detail.

Minoxidil: pushing growth

Minoxidil was first used as an oral blood-pressure drug, and hair growth was noticed as a side effect. As a topical it is thought to lengthen the growth (anagen) phase and enlarge follicles. It does nothing about DHT, so the underlying process continues in the background. That's why minoxidil users who stop tend to lose what they gained. The cause was never addressed, only counter-balanced. Our sister site MinoxidilQuick goes deeper on formulations and application.

Which to start first: how prescribers tend to think

There isn't one universal sequence, and you shouldn't treat any article as a protocol. These are the considerations that usually drive the decision.

1. Speed of loss. If you are losing ground quickly, there's an argument for addressing the cause early, which points to finasteride. Minoxidil alone can grow hair while the underlying miniaturization continues.
2. Access. Minoxidil is on the shelf; finasteride needs a prescription. Some men start minoxidil while they arrange a consult. That's reasonable as long as you understand it's not doing finasteride's job.
3. Side-effect concerns. If you are worried about sexual side effects, talk it through with a prescriber rather than skipping treatment. In the 12-month trials, reported rates were low and close to placebo. Decreased libido was 1.8% on finasteride versus 1.3% on placebo, and erectile dysfunction was 1.3% versus 0.7%. Our side effects by the numbers piece puts those in context.
4. Family plans and household. Finasteride is contraindicated in women who are or may become pregnant. Women in that situation shouldn't handle crushed or broken tablets. That doesn't stop men from taking it, but it's worth knowing.
5. Tolerance for routines. A daily pill is easy for most people. Topical minoxidil means applying it to the scalp and waiting for it to dry, every day, indefinitely. Be honest about which you'll actually keep doing.
6. Being able to read the results. Starting one drug at a time makes it easier to tell what each did, including any side effects. Starting both together gets both mechanisms working sooner. Our article on starting both at once vs staggering lays out both approaches.

What to expect in the first months

Both drugs are slow, and both can make things look worse before they look better. Many men notice increased shedding in the early months as follicles cycle into a new growth phase. That's commonly reported with minoxidil and also with finasteride. It is the point where many people quit, usually too early. Our post on the finasteride shed covers typical timing and the signs that warrant a call to your prescriber.

For finasteride, the label's line is that daily use for three months or more is generally needed before benefit is observed, and that continued use is needed to sustain it. Judge either drug over months, with consistent photos, not day to day in the bathroom mirror.

Common misconceptions

• "Minoxidil is the natural one." It isn't natural. It's a drug with its own side-effect profile; it is simply sold over the counter in topical form.
• "Finasteride grows hair, minoxidil maintains it." It's closer to the opposite. Finasteride's main strength is maintenance with some regrowth, and minoxidil's main strength is stimulating growth.
• "If one works, the other is pointless." They target different things. Whether adding the second is worth it is a cost and routine question for you and your prescriber.
• "Oral minoxidil is the same as topical." Low-dose oral minoxidil is a separate, off-label approach with its own monitoring questions, and it's prescribed rather than bought off the shelf.

Where topical finasteride and combination products fit

You'll also see products that blur the line: topical finasteride, and single bottles or capsules that combine minoxidil with finasteride. In the US these are generally compounded, meaning a pharmacy prepares them for an individual patient. Compounded products are not FDA-approved, and the FDA doesn't review them for safety, effectiveness or manufacturing quality. They can make a routine simpler, and topical finasteride is often discussed by men who want less of the drug in their bloodstream. The trade-off is less standardised evidence than the approved tablet. Our comparison of topical vs oral finasteride covers what the absorption studies show.

Thinking about commitment

Whichever you choose, plan for it to be long-term. Both drugs work only while you use them. Before you start, think through the questions that tend to decide whether people stick with treatment:

• Can I realistically keep up a daily routine for years, not weeks?
• Do I have a prescriber who will handle refills and answer side-effect questions?
• Am I judging results at sensible checkpoints, such as six and twelve months, with photos?
• Do I know what I'd do if one drug plateaus: add the other, adjust, or stop?

How to start, practically

Topical minoxidil you can buy and use according to the package directions. Finasteride needs a prescriber, either your own doctor or a telehealth service. Telehealth usually means an online intake, a clinician's review, and a decision on whether a prescription is appropriate. If you go that route, our guide to getting finasteride online walks through the process. If you're also considering a transplant down the line, read why transplant surgeons ask about finasteride first.

When to see a doctor: if your loss is patchy, sudden, itchy or painful, or you're losing hair from your eyebrows or beard, get examined before starting either drug. Those patterns suggest something other than male pattern hair loss.