What minoxidil is
Minoxidil is a vasodilator, a compound that widens blood vessels. Applied to the scalp for hair loss, it is thought to improve blood flow around the follicle and prolong the active growing phase of the hair cycle. Unlike finasteride, which works on the hormone DHT, minoxidil works on the follicle and its growth cycle, which is why the two are commonly used together rather than as rivals. It is used for androgenetic alopecia in both men and women.
Most people encounter it as Regaine or a generic equivalent, in 2% and 5% strengths, sold as either a liquid solution or a foam.
Topical vs oral: the important difference
Topical minoxidil is a Schedule 2 pharmacy medicine in Australia. That means you can buy it over the counter at a pharmacy without a prescription, though a pharmacist can advise on strength and use. This is the version most people mean when they talk about minoxidil for hair.
Oral minoxidil is a different thing. It is a tablet originally approved as a blood-pressure medicine, and low-dose oral minoxidil for hair loss is prescribed off-label, meaning outside its registered use. Because a tablet affects the whole body, not just the scalp, it carries considerations like effects on blood pressure and fluid retention, and it is Schedule 4, prescription-only. It is only appropriate after a practitioner assessment.
What to expect, including the shedding phase
Early shedding is common. In the first two to three months, many people notice a temporary increase in shedding as follicles reset into a new cycle. It is generally expected rather than a sign of failure, but if it worries you, a pharmacist or practitioner can reassure you or reassess.
It takes months, and it is ongoing. Give it several months before judging the effect, and know that any benefit holds only while you keep using it.
Side effects. For topical use, the common ones are local scalp irritation and unwanted hair growth if the product spreads beyond the scalp, so it is applied carefully. Oral minoxidil's considerations are different, which is part of why it is prescription-only.
How it fits with a full treatment plan
You can buy topical minoxidil yourself and use it on its own. Many people do. But clinical reviews describe minoxidil combined with finasteride as more effective than either alone, because they tackle different parts of the problem. Finasteride is prescription-only and needs a practitioner assessment, which is where a telehealth service or your GP comes in.
If you would rather have a practitioner assess the whole picture and set up a combined plan than assemble it yourself, that is what services like Mosh do. Our finasteride guide covers the prescription side, our cost guide covers what treatment tends to run to, and our comparison lines up the main options.
Want a plan set up for you?
Topical minoxidil you can buy yourself. For a practitioner-assessed plan that can combine actives, Mosh runs a men's hair-loss assessment online, reviewed by registered Australian practitioners, with treatment delivered if appropriate. New customers get 55% off their first order through our link.
Start a Mosh assessmentFrequently asked questions
Is minoxidil available over the counter in Australia?+
Topical minoxidil is. It is a Schedule 2 (pharmacy) medicine, sold over the counter from a pharmacy without a prescription, commonly as Regaine and generics in 2% and 5% strengths, as a solution or foam. Oral minoxidil is different: it is a Schedule 4 prescription-only medicine. This page is general information, not medical advice.
What does minoxidil do for hair loss?+
Minoxidil is a vasodilator. Applied to the scalp it is thought to improve blood flow around the hair follicle and extend the growing phase of the hair cycle, which can help with androgenetic alopecia in both men and women. It works differently from finasteride, which is why the two are often used together. Whether it suits you is a question for a pharmacist or practitioner.
What is the difference between topical and oral minoxidil?+
Topical minoxidil is applied to the scalp and is available over the counter. Oral minoxidil is a tablet, originally approved as a blood-pressure medicine, and low-dose oral minoxidil for hair loss is prescribed off-label, meaning outside its registered use, after a practitioner assessment. Oral use carries different considerations, such as effects on blood pressure and fluid, so it is prescription-only.
How long does minoxidil take to work, and what is the shedding phase?+
Give it several months. Many people notice a temporary increase in shedding in the first two to three months of use, sometimes called reactive shedding, as follicles cycle. This is generally expected rather than a sign it is failing, but if you are unsure, ask a pharmacist or practitioner. Any benefit continues only while you keep using it.
What are the side effects of minoxidil?+
For topical minoxidil, the common ones are local scalp irritation and unwanted hair growth if it spreads to areas like the face, which is why it is applied carefully to the scalp only. Oral minoxidil can affect blood pressure and cause fluid retention, which is part of why it is prescription-only. This is a factual summary, not personal medical advice.
Can I use minoxidil and finasteride together?+
Many people do, under guidance. Clinical reviews describe topical minoxidil combined with finasteride as more effective than either used alone, because they act on different parts of the problem. Finasteride is prescription-only and needs a practitioner assessment, while topical minoxidil is available over the counter. Our finasteride guide covers the prescription side.
Does Refer Labs prescribe or supply minoxidil?+
No. Refer Labs is an independent comparison publisher. We explain how the medicine and the services work and link out to them, including a disclosed affiliate link to Mosh. We do not provide medical care or supply medicines. Nothing here is medical advice. For topical minoxidil, a pharmacist can advise; for a full assessed plan, a practitioner can.
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This page is published by Refer Labs, an independent comparison publisher, and contains a disclosed affiliate link to Mosh, which means we may earn a commission if you sign up through our link. Commissions never change what we write. All content is for general information only and does not constitute medical advice. Topical minoxidil is a pharmacy medicine; oral minoxidil is prescription-only and used off-label for hair loss after a practitioner assessment. Consult a pharmacist or qualified health professional before starting any treatment. See our editorial standards.