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VetPlus Switch Lotion for Horses

VetPlus Switch Lotion for Horses
250ml Bottle

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  • 250ml Bottle £33.29


Switch Lotion is a ready to use liquid solution to facilitate the maintenance of Sweet Itch in horses, ponies and donkeys. Easy to use thanks to a calibrated dispensing chamber found within the applicator bottle. Use Switch Lotion at the start of Sweet Itch season and repeated as and when needed.

4% w/v (4 g/100ml) Permethrin (cis:trans 80:20).

External pour-on liquid to aid control of Sweet Itch in horses & donkeys.

Switch is a ready to use solution that should be applied at a rate of 1 ml per 10 kg bodyweight to a maximum of 40 ml. Apply Switch using the calibrated dispesing chamber incorporated into the applicator bottle. Apply the measured dose in roughly equal portions to the mane and rump avoiding the saddle area. Treatment should be started at the beginning of the sweet itch season and repeated as necessary. If horses and donkeys are to be groomed, apply Switch after grooming.

Need help or advice? Contact us:

  • Landline: 01582 842096
  • Mon - Fri: 8:30am - 5:00pm
  • Sat: 9:00am - 1:00pm (Collections only)
  • Email: [email protected]

All prices include VAT where applicable.

Delivery Information

How quickly do you deliver?

Under almost all products on our website is an Estimated dispatch time, check this for a delivery prediction specific to the item you are looking to purchase. These badges are updated live based on the stock levels we have and also those of our suppliers - so are usually very accurate, but cannot be guaranteed. In more general terms, we aim to dispatch all orders within 1 working day of receiving payment (and a prescription if required). If we cannot do so within 3 working days we will contact you by email.

What do you charge for delivery?

For UK delivery, we charge the following:

Order Total Weight Delivery
£0-£28.99 Under 2kg £2.99
2kg+ £4.99
£29-£38.99 Under 2kg Free
2kg+ £4.99
£39+ Under 2kg Free
2kg+ Free

Prices quoted are for delivery to all parts of mainland UK except certain Scottish postcodes (where the price is higher for items sent by courier. Delivery of food abroad (including Channel Islands, N. Ireland and other islands around the UK) is charged at a higher price and free delivery is not available. Temperature controlled products are also not always subject to the standard and/or free delivery options.

For full information on our delivery charges, including prices on heavy deliveries to Scotland and abroad, see our delivery information page.

We can deliver most items to all around the world, but prices do vary. To find the exact cost of shipping your item, and to see all options available, follow these steps:

  1. Put the items you wish to order in your basket
  2. Proceed to checkout and enter your delivery address, including country
  3. Delivery information including price will automatically update to what is available to you

Delivery of aerosols

Due to restrictions aerosols can't be sent by Royal Mail. We appreciate your understanding.

Delivery of temperature controlled items

Some products, such as non-ambient items and frozen food, need to be delivered in insulated packaging to prevent them from getting too warm (or too cold) during transit from us to you. Purchasing any of these items in your order will result in a £1.99 charge being added to the total to cover the high cost of the insulated packaging materials. You only pay the £1.99 once per order, regardless of how many temperature controlled items you purchase in that order.

How do I cancel or return an order?

Please call us as soon as possible if you need to amend or cancel an order on 01582 842096. If your order has been processed for dispatch we will be unable to cancel or amend the order. You will however be able to return your product for a full refund*.

To return an item, you must contact us by phone or email to arrange this BEFORE posting any product back to us. We will explain the process at this stage for you.

*For full details on returns, see our terms and conditions page.

Reviews (22)

Q & A

Below are some recent questions we've received regarding VetPlus Switch Lotion for Horses, including answers from our team.

29 September 2018 at 8:39pm

How often should I reapply?

Andrea Walters

  • VioVet customer since 2018
  • From: Hertfordshire, United Kingdom

It says in the description to reapply when necessary, on average how often would this be? I don’t really want for him to start itching again before re application?

  • Customer Service Advisor


Thank you for getting in touch.

If need be this can be repeated weekly.

Hope that helps,


11 June 2018 at 5:05pm

Switch on mare


Can it be used on a mare that have a baby nursing?

  • Customer Service Advisor

Hello Caisa,

Thank you for your question.

This is safe to use providing you do not cover the area that the baby feeds from.

Hope that helps,


8 May 2016 at 12:29am

Can switch be used on pregnant mares?

Lana Spence

  • VioVet customer since 2015
  • From: Scottish Borders, United Kingdom

Can switch be used on pregnant mares to kill lice?

  • Non-Executive Director

Yes this is acceptable. As long as you use it in accordance with the manufacturer's directions, it should be safe for a pregnant mare.

7 May 2016 at 12:13am

Horse with lice..


  • VioVet customer since 2016
  • From: North Ayrshire, United Kingdom

A new horse in the yard has a huge burden of lice. We are using liquid Switch, can you advise length of treatment and quarantine required please?


  • Non-Executive Director

If one has a huge burden, any of the others may have a few and are acting as carriers. Complete elimination is best achieved by treating all in-contact horses as well. Treatment/quarantine continues for 2 weeks after no living lice can be found anywhere on any horse. It is possible just to treat the horse(s) which appear to have lice and eliminate them, but this is less reliable because some transfer of lice tends to occur without you being aware of it. I would have to wonder if the badly affected horse is in poor condition or has Cushing's disease or something. As a general observation, well groomed horses in good physical condition rarely suffer with lice, though they might have the odd one or two in the dense hair of the main etc. Immuno-compromised horses are more likely to suffer. Therefore as well as treating the lice, it is worth considering if the general health and grooming could be improved. There is plenty of good advice about this topic online and of course you can ask your vet too.

21 August 2015 at 7:26pm

Can Switch be used on broken skin


Pony had rubbed it mane and has a couple of damaged areas of skin on the mane. Can switch still be applied.

  • Non-Executive Director

Switch can be used on broken skin and indeed it is usually applied to areas which are rubbed and prone to getting sore. It should not be applied to extensive wounds, but the sort of abrasions likely to be encountered are not a significant problem. Indeed in a way you have to try and do something to reduce the itching, or the wounds will get worse.

16 August 2015 at 6:08pm

Riding horse whilst using switch

john price

Can the horse be used for riding whilst using switch?

  • Non-Executive Director

A horse can be worked as normal when Switch is used, this is completely fine.

15 July 2014 at 9:18am

Horses for Human Consumption

Sara Roberts

I'm wondering if this product can be used on horses intended for human consumption or not.

  • PHP Developer

Switch should not be used on horses that are for human consumption.

1 May 2014 at 12:47pm

Horse weight

L Moore

how can I estimate the weight of my cob - i do not have a weight tape

  • PHP Developer

You could measure what is known as the heart girth, which is around the midsection, immediately behind the elbow and withers. Then measure from the point of the shoulder to the point of the buttock (tuber ischii). There are calculators online where you can enter these details and it will give you an approximate weight.