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Minoxidil is toxic to cats and can harm dogs too. Learn how pets get exposed, which signs to watch for, and what UK owners should do in the first hour.


Sons Minoxidil 5% scalp solution, applied twice daily to help regrow hair. Same active ingredient and strength as Regaine Extra Strength.
Most hair loss in men is caused by DHT, a hormone that shrinks hair follicles over time. Finasteride works on the cause. Minoxidil works on the follicle. Many men use both.

Finasteride is a daily tablet that blocks 5-alpha reductase, lowering the DHT that shrinks hair follicles. It stops further loss in most men and many see regrowth. Results usually show in 3 to 6 months.

Minoxidil 5% is a solution you apply to your scalp twice a day. How it works isn't fully understood, but it widens blood vessels around the follicle and lengthens the growth phase of the hair cycle. It doesn't affect your hormones.

Finasteride tackles the cause and minoxidil supports regrowth, so using both covers more ground. In studies, more men improve on both than on either one alone.
Hair loss is normal and treatable.
Getting started takes about three minutes.

A few questions about your health and goals. No appointment, no selfies.

Your treatment has been approved
A GPhC-registered prescriber checks it's safe and suitable. You only pay if approved.

Sent Royal Mail Tracked in plain, unbranded packaging.

Message your pharmacist any time, for as long as you're with us.
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Sons Minoxidil 5% and Regaine for Men Extra Strength contain the same active ingredient at the same strength: 5% minoxidil. That active ingredient is what regrows hair, so you can expect it to work in the same way.
The brand, applicator and some inactive ingredients differ. If one product has irritated your scalp before, tell us in your consultation.
Sons Minoxidil 5% costs £19.99 for one 60 ml bottle (about one month) or £49.99 for three bottles (about three months). Delivery is charged at checkout.
If you also want finasteride, the finasteride and minoxidil kit costs less than buying both separately.
Often, yes. They work in different ways: finasteride lowers DHT, the hormone behind male pattern hair loss, while minoxidil supports regrowth at the scalp. Using both is a common approach.
Our pharmacists check your answers to make sure both are suitable for you.
Some men notice extra shedding in the first few weeks. Minoxidil moves follicles into a new growth phase, so older hairs fall out to make way for new ones. This usually settles within a couple of months.
If shedding continues after 2 months, or you have any concerns, message our pharmacists.
Hair that has regrown with minoxidil is usually lost within 3 to 4 months of stopping. Minoxidil only works while you keep using it.
This 5% solution is for men aged 18 to 65 with male pattern hair loss. Women should not use it. Speak to a pharmacist or your GP about options for female hair loss.
Expert advice from our pharmacist team
Minoxidil is toxic to cats and can harm dogs too. Learn how pets get exposed, which signs to watch for, and what UK owners should do in the first hour.
Minoxidil 10% and 15% exist, but the evidence does not support them over standard 5%. Here is what UK men should know before going stronger.
Combining a dermaroller with minoxidil may boost hair regrowth beyond what minoxidil does alone. Here's what the evidence shows and how to do it safely.
Minoxidil is available over the counter at Boots, Superdrug and online. Here's where to buy it safely, what to expect, and which format suits you.
Minoxidil isn't just for men. Here's what the clinical evidence actually shows about topical and oral minoxidil for female hair loss in the UK.
Yes, you can use finasteride and minoxidil together. Here's what the evidence says about combining them, what results to expect, and how to use both safely.
Medically reviewed by

Superintendent PharmacistGPhC: 2220517
This page has been reviewed by our clinical team to ensure it is clear, accurate, and up to date.
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