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Frequently Asked Questions

How does

STUD 100 work?

The active ingredient, Lidocaine, acts as a local anaesthetic by reducing the sensitivity of the penis just before intercourse (sex).  The reduction in sensitivity helps to delay ejaculation (climax) in cases of

over-rapid or premature ejaculation

(coming to a climax too quickly).


Where do I spray STUD 100 ?

STUD 100 is for external use only.

Spray on the head and shaft of the penis.

Are there any side effects?

Like all medicines, STUD 100 can cause side effects in some people. Occasional skin irritation may occur following use of STUD 100.

If you or your partner develop a rash or irritation, stop using the spray.
The levels of lidocaine in the blood after using STUD 100 at the maximum recommended dose are extremely low. Very high blood levels of lidocaine

(25 times higher than the level after using STUD 100 at the maximum recommended dose) could cause side effects such as nervousness, dizziness, convulsions, loss of consciousness, as well as effects on the heart and lungs.

If you get any side effects, talk to your doctor or pharmacist.  This includes any possible side effects not listed on this website or pack leaflet.  You can report side effects to Pound International Limited by clicking the below button 'For enquires and reporting a side effect'. You can also report side effects directly via the national reporting system - Yellow Card Scheme Website: or search for MHRA Yellow Card in the Google Play or Apple App Store.

How do I use STUD 100 ?

Spray STUD 100 on the head and shaft of the penis between 5 and 15 minutes before intercourse, to allow time for it to become absorbed. The recommended dose is between 3 to 8 sprays, but  aim to use the minimum number which is effective for you. Do not use more than 24 spray doses in 24 hours.

The product should be washed off after intercourse. The product should not be used repeatedly for more than 3 months without medical supervision.

Do not use on broken or inflamed skin.

Is STUD 100 safe for women?

STUD 100 is only indicated for use in men. Possible transfer of STUD 100 to the female partner could occur during intercourse. However, this is likely to be a very small amount and the amount of absorption of lidocaine, the active ingredient, is likely to be very low. Nevertheless, as a precaution, STUD 100 is not recommended for use by men with a female partner who is pregnant. 

Who should I call if I have a question about STUD 100 ?

Call +44 (0)20 7935 3735 and your call will be answered during office hours

(9am to 5pm GMT Monday to Friday). 

You can leave a message, which will be answered on the next working day or you can email , but emails will only be accessed during normal office hours. 

For urgent queries, please contact your GP or healthcare professional. 

We cannot offer medical advice. 

You should speak to your doctor or other healthcare professional if you have a medical question.


What about the environment?

STUD 100 uses a pump-action spray, so it doesn’t harm the ozone layer. The can is not currently recyclable.

How do I store  STUD 100 ?

Store below 25°C. Do not use after the expiry date printed on the carton and can.

The expiry date refers to the last day of that month.

Keep out of the sight and reach of children.

What does

STUD 100

look like?

STUD 100 is in a white aluminium can

with a metered pump spray and a gold aluminium cap.

It contains 12g of STUD 100 Desensitizing Spray for Men (approximately 120 sprays) and is a transparent liquid.

Where can I buy STUD 100 ?

Please see our list of UK Pharmacies that sell STUD 100 online. For rest of world sales, or larger orders, please email  Always buy the product from a reputable stockist and beware of counterfeit (fake) medicines.

Is STUD 100 


STUD 100 is a licensed medicinal product (UK Licence Number PL 2294/5000R), available without a prescription in the UK and many other countries. See our licensed stockists’ details on the Buy STUD 100 page.  STUD 100 undergoes a robust programme of safety and efficacy monitoring and is manufactured in accordance with Good Manufacturing Practice.

How do I DISPOSE of unused

STUD 100 ?

Medicines should not be disposed of via wastewater or household waste.  Ask your pharmacist how to dispose of medicines no longer required.  These measures will help to protect the environment.

When I Google STUD 100, I sometimes see a picture of it with a black cap. Why?

STUD 100 is supplied to the USA with a black child resistant cap. The USA version meets the requirements of the FDA Monograph on Male Genital Desensitizers. If you have concerns over the appearance of STUD 100, you should contact Pound International Ltd for advice. Always buy the product from a reputable stockist and beware of counterfeit (fake) medicines.  Counterfeit medicines do not contain the same ingredients as authentic STUD 100 and can even be harmful.

How long will one STUD 100 can last for?

Each 12g (7/16 fl.oz.) spray can contains enough STUD 100 for about 120 sprays. Do not use STUD 100 after the expiry date which is stated on the can. The expiry date refers to the last day of that month.

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"Effective Product! I have used it for many years, it has improved my sex life and confidence." - NF

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