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Sedalin Gel for Horses

Sedalin Gel for Horses
10ml Syringe

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  • 10ml Syringe £19.99


Sedalin Gel is supplied in a graduated plastic syringe and used to sedate horses. The syringe can be inserted into the corner of the mouth to deposit the palatable gel into a cheak pouch, or Sedalin Gel can be added to food. The active ingredient is ACP (acepromazine) and this produces sedation within 15 to 30 minutes, which lasts for up to 6 or 7 hours. Increasing the dose will increase the level of sedation and prolong the period of effect.

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Medication Datasheets

10ml Syringe

Sedalin 35mg /ml Oral Gel


Yellow-orange transparent gel for oral administration. Each ml contains acepromazine (as acepromazine maleate) 35.0 mg and methyl-4-hydroxybenzoate 0.65 mg and propyl-4-hydroxybenzoate 0.35 mg as preservatives.


For sedation of horses

Dosage and administration

Moderate sedation: 0.15 mg acepromazine/kg bodyweight.

The dose may be varied to administer between ½ and 1 ½ times the above recommendation according to the level of sedation required, i.e. for mild sedation, administer half the recommended dose and for deeper sedation, administer 1 ½ times the recommended dose.

Because of the difficulties in ensuring the accurate delivery of small doses, the product should only be used in horses of less than 200kg bodyweight in accordance with a benefit / risk assessment by the responsible veterinarian.

The syringe is brought into the animal’s mouth and the suitable dose is pumped into the cheek pouch. The palatable gel can also be mixed with food.

Contra-indications, warnings, etc

Not for use in animals in shock or post traumatically, or with existing severe emotional excitation or epilepsy.

Special warnings for each target species

Sedation lasts for approximately six hours, although the actual time and depth of sedation are very dependent on the status of the individual animal.

Increasing the dosage results in prolonged action and side effects but no greater sedation.

Special precautions for use in animals

Do not use in cases of post traumatic hypovolemia.

Operator warning

In the case of accidental ingestion contact a physician showing the pack insert or product label to the physician. Wash hands and exposed skin thoroughly after use. Persons with sensitive skin or in continuous contact are advised to wear impermeable gloves. Avoid contact with eyes. If accidental eye contact occurs, flush gently with running water for 15 minutes and seek medical advice if any irritation persists.

Adverse reactions (frequency and seriousness)

Since acepromazine decreases sympathetic nervous system tone, a transient drop in blood pressure may occur after its administration. Acepromazine inhibits temperature regulation.

The following reversible changes are possible in the haemogram: Transient decrease in the erythrocyte count and haemoglobin concentration as well as in thrombocyte and leukocyte counts.

Because it increases prolactin secretion, the administration of acepromazine may lead to disturbances in fertility.

Penile prolapse may occur due to the relaxation of the retractor penis muscles. Retraction of the penis should be visible within two to three hours. If this does not take place, it is advised to contact a veterinary surgeon. Lack of retraction is of particular concern in breeding stallions. Acepromazine has caused paraphimosis sometimes in a sequel to priapism.

Use during pregnancy or lactation

Acepromazine should not be used in pregnant or lactating mares.

In stallions the lowest dose range is indicated to minimise prolapse of the penis.

Interaction with other medicinal products and other forms of interaction

Acepromazine potentiates the action of centrally depressant drugs. The simultaneous use of organic phosphate esters increases the toxicity of acepromazine. Since acepromazine decreases sympathetic nervous system tone, it should not be given at the same time as blood pressure reducing drugs.

Overdose (symptoms, emergency procedures, antidotes) if necessary

Overdosage results in an earlier onset of the sedative symptoms and in a prolonged effect.

Toxic effects are: ataxia, hypotensia, hypothermia, extrapyramidal effects.

Noradrenaline can be used to counteract the cardiovascular effects. Methylamphetamine has been recommended for the treatment of aberrant reactions in horses.

Withdrawal period

Not authorised for use in horses intended for human consumption.


Simultaneous administration or administration to patients who were treated recently with organophosphates should be avoided, since these molecules enhance the toxic effects of acepromazine.

Simultaneous treatment with blood pressure lowering products should be avoided.

Legal category

Packaging quantities

10 ml white, low density polyethylene pre-filled oral dial-a-dose syringe and syringe plunger with white low density polyethylene cap (push fit)

Further information

ATC Vet Code: QN05AA04. Acepromazine is a phenothiazine derivate. This group of molecules belongs to the neuroleptica: they depress the central nervous system and exert associated effects on the autonomic system. These effects are due to their interference with different neurotransmitter receptors (dopaminergic, adrenergic) and to their interference with hypothalamic performance.

The desired effects observed after treatment with acepromazine include a general tranquillizing effect, anti-emetic effect and a slight antihistaminic effect. There is no analgesic action. The neuroleptical effects are variable between individual animals.

Acepromazine is partly absorbed from the gastrointestinal tract. It binds extremely well to plasma proteins and is extensively distributed over the body tissues. Plasma levels are usually low. Acepromazine is highly metabolized and excreted in urine. The sedative activity starts within 15-30 minutes and lasts up to 6-7 hours.

Marketing Authorisation Number

Vm 08007/4089

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, such as Insulin, 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 insulin 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 (5)

Q & A

Below are some recent questions we've received regarding Sedalin Gel for Horses, including answers from our team.

6 February 2019 at 11:36pm



Would this be ok to use for a nervous horse being clipped?
She is normally sedated by vets for this but it costs me so much money and she needs clipping again

  • Veterinary Advisor

Sedalin will take the edge off a nervous horse when being clipped but is no where near as potent as a true sedative. There is also a huge variation in its effect on different horses. The only way to know is to give it a go. The other option is Domosedan gel which is stronger and goes under the horses tongue. Both of these products will require a prescription from your vet. Hope this helps. Good luck.

29 June 2016 at 1:53pm


Miss L. Mewes (mewes1127)

  • VioVet customer since 2015
  • From: Lincs, United Kingdom

If you were to use sedaline on a pony in shock or with severe emotional excitation, what possible reactions or outcomes would there be?

  • Non-Executive Director

In this situation, the Sedalin might appear to be ineffective, or alternatively might have a more pronounced and prolonged effect. You might see excessive staggering about, or the horse getting cold and then shivering, or other unwanted effects. Essentially it should only be used in horses which are well, although any adverse effects usually get better on their own soon afterwards.

12 February 2016 at 7:01pm



Hi would this be an adequate sedation for my sec d cob to have his teeth done this is the first time he has had his teeth done his previous owner never bothered he can be quiet bolshy and panic in new situations and I know he won't appreciate having the gag on tia

  • Non-Executive Director

Horses vary in how they respond to this as a sedative. It seems to work better in some than others. Also of course the way the horse is handled makes a big difference. Ideally your own vet should be advising you on this subject as Sedalin and any more potent alternatives are prescription only. They should be prescribed taking into account your individual animal and situation, which only your own vet can assess. For the average horse Sedalin is adequate though.

5 November 2015 at 11:26pm



I am going to use Sedalin to clip pony at 0930 ,planning on giving it to him 30 mins prior ,no feed ,hay etc ,daughter keen to ride in the afternoon ,1230 ish !! What time line is safe for her to do so ,or do I wait till Sunday ?? Many thanks

  • Non-Executive Director

I would have to advise that stumbling is slightly more likely to occur even after a pony appears to have recovered. This could possibly result in injury to pony or rider. Personally I would not advise riding on the same day after giving this product. Sorry!