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Zarontin syrup discontinued

13 Apr 2017

The medicine company Pfizer has stopped making its version of ethosuximide syrup, called Zarontin.

If you take Zarontin, you will need to switch to a different manufacturer’s version of ethosuximide syrup.

If you have any concerns about this, speak to your doctor, epilepsy nurse or pharmacist.

Comments: read the 3 comments or add yours


My son has csws which is a very rare form of epilepsy. He has done so well on Zarontin and now I am very worried. My question is: you mention the discontinuation of Zarontin but what about Emeside which is another brand of ethosximide in the UK. I cannot get either and I am very concern to switch to generic. Please let me know your thoughts. Best

Submitted by Salma on

Hi Salma


Thank you for your question.


I’m sorry to confirm that Emeside is also no longer available.


You will need to change your son to a generic version of ethosuximide syrup.


It would be best to discuss this with your son’s epilepsy doctor, epilepsy nurse or pharmacist.





Epilepsy Action Helpline Team

Submitted by rich on

Hi Salma,
What was the outcome. We are in a similar position regarding Zarontin.

Submitted by Workforce on

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