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Undecenoate for athlete's foot

Mycota

Use the cream or powder twice every day after washing and drying your feet.

Continue to treat the area for 1-2 weeks after the itchy rash has gone.

To help prevent athlete's foot from recurring, change your socks daily, change your shoes every 2-3 days and let air get to your feet whenever possible.

At a glance

  • Undecenoate is an antifungal skin treatment for athlete's foot.

  • It comes as a cream or powder and is also called Mycota®.

  • Apply it twice daily to affected areas and surrounding skin, avoiding open sores.

  • Continue treatment for about a week after symptoms clear to prevent recurrence.

  • Mild irritation can occur; stop using if it becomes severe.

Continue reading below

About undecenoate

Type of medicine

An antifungal skin preparation

Used for

Athlete's foot

Also called

Mycota® (zinc undecylenate and undecylenic acid)

Available as

Cream and powder

Athlete's foot is a common fungal skin infection. Fungal germs (fungi) often occur in small numbers on your skin where they usually do no harm. However, in warm and moist areas of skin, such as between your toes, they can thrive and multiply to cause an infection. This causes a rash to develop that is itchy and scaly and your skin becomes cracked and sore. Treatment with an antifungal cream usually works well.

Undecenoate cream and powder (brand name Mycota®) work by killing the fungus causing the infection. They are available to buy from pharmacies and other retail outlets and can be used by adults and children.

To make sure that this is the right treatment for you, before you start using Mycota® it is important that your doctor or pharmacist knows:

  • If you have ever had an allergic reaction to a cream or ointment.

  • If you are pregnant (although undecenoate is not known to be harmful in pregnancy).

Continue reading below

  • Before you start the treatment, read the manufacturer's printed information leaflet from inside the pack.

  • Apply Mycota® twice every day, in the morning and the evening. Apply the cream or powder to the itchy areas and also to the healthy areas of skin surrounding the rash. It shouldn't be applied to any open sores or broken areas of skin.

  • Although the rash may seem to go quite quickly, continue to use Mycota® for a week or so after the itchiness has gone. This is to make sure that the skin is completely clear of fungi and will help to prevent the infection from returning.

  • You can continue to use Mycota® once a day as a preventative measure if required.

  • Wash your feet every day and make sure you dry the skin between your toes thoroughly afterwards. Any soggy skin between your toes is an ideal place for the fungus to grow. Make sure your feet are quite dry before you put socks and shoes on.

  • Wash your towels frequently and do not share towels with other people. This will help to stop the infection from being passed on from person to person.

  • It is probably better to wear cotton socks rather than socks made from man-made fibres, as these will cause your feet to sweat more than cotton will. Remember to change your socks daily, as fungi can multiply in flakes of skin in unwashed socks.

  • If possible, alternate between different pairs of shoes every 2-3 days to allow each pair to dry out fully before being worn again.

  • Whenever possible while you are at home, walk around without shoes and socks to let the air get to your feet.

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Antifungal preparations usually cause no side-effects, although mild irritation can develop occasionally. If this happens and the irritation becomes severe, stop using the preparation, as it could be a sign of an allergic reaction.

  • Keep all medicines out of the reach and sight of children.

  • Store in a cool, dry place, away from direct heat and light.

Important information about all medicines

This preparation is for external use only. If someone swallows some of this preparation, go to the accident and emergency department of your local hospital. Take the container with you, even if it is empty.

If you are having any treatment like an operation or dental treatment tell the person carrying out the treatment which medicines you are taking or using.

This medicine is for you. Never give it to other people even if their condition appears to be the same as yours.

Do not keep out-of-date or unwanted medicines. Take them to your local pharmacy which will dispose of them for you.

If you have any questions about this medicine ask your pharmacist.

Report side effects to a medicine or vaccine

If you experience side effects, you can report them online through the Yellow Card website.

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Unsure about mixing medicines?

Check for possible interactions between medicines, supplements and foods before taking them together.

Frequently asked questions

What is athlete's foot and how do I know if I have it?

Athlete's foot is a common fungal skin infection. You might have it if you notice a rash that is itchy and scaly, and your skin becomes cracked and sore, especially between your toes or in other warm and moist areas.

Can children use undecenoate (Mycota®) for athlete's foot?

Yes, undecenoate cream and powder (Mycota®) can be used by both adults and children for athlete's foot.

How long should I use Mycota® cream or powder for athlete's foot?

You should apply Mycota® twice a day, in the morning and evening, until the itchiness is gone. Then, continue using it for about a week more to ensure all fungi are cleared and to help prevent the infection from returning.

Where exactly should I apply the cream or powder?

Apply the Mycota® cream or powder to the itchy areas of your skin, and also to the healthy skin surrounding the rash. However, do not apply it to any open sores or broken skin areas.

Can I use Mycota® to prevent athlete's foot from coming back?

Yes, you can continue to use Mycota® once a day as a preventative measure if you find it helpful to keep the infection from returning.

What should I do if my skin gets irritated after using Mycota®?

Antifungal preparations usually don't cause side-effects, but mild irritation can occur. If irritation develops and becomes severe, stop using Mycota® as it might be a sign of an allergic reaction.

Do I need to be careful with my towels or socks while I have athlete's foot?

Yes, it's important to wash your towels frequently and avoid sharing them to prevent spreading the infection. For socks, cotton is recommended as it causes less sweating than man-made fibres. Change your socks daily, as fungi can multiply in skin flakes in unwashed socks.

What is the best way to store Mycota®?

Store Mycota® in a cool, dry place, away from direct heat and light. Always keep it out of the reach and sight of children.

Further reading and references

Continue reading below

About the authorView full bio

Author image

Michael Stewart, MRPharmS

Medicine Leaflet Review Manager – Contractor, Pharmacist

BPharm (Hons), MRPharmS

Michael is a community pharmacist practicing in the Midlands and South Yorkshire with more than 20 years’ experience advising on medicines and medical conditions. He has a strong background in healthcare training, having produced and delivered training courses for pharmacy teams and staff of residential care settings, including nurses. He has also contributed to pharmacy advisory boards for the management of low acuity conditions in the community.

About the reviewer

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Sid Dajani

Sultan Dajani qualified at the London School of Pharmacy in 1994 and became the youngest elected member of the Royal Pharmaceutical Society council since its founding in 1842.

Article history

The information on this page is written and peer reviewed by qualified clinicians.

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