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Medicines defect alert issued for Syonell 250mg, 500mg gastro-resistant tablets

The Medicines and Health products Regulatory Agency (MHRA) has issued a class four medicines defect alert for Syonell 250mg & 500mg gastro-resistant tablets of Lupin Healthcare (UK) Limited.

Lupin has informed the health regulator of a discrepancy with the product packaging for several batches of Syonell 250mg Gastro-Resistant Tablets and Syonell 500mg Gastro-Resistant Tablets.


This discrepancy relates to the incorrect amount of active pharmaceutical ingredient-valproate semisodium printed on the outer packaging.

Labelling on the current packagingCorrect labelling on the packaging 
Syonell 250mg Gastro-Resistant Tablets each gastro-resistant tablet contains 250mg of valproate semi sodiumSyonell 250mg Gastro-Resistant Tablets each gastro-resistant tablet contains 269.06mg of valproate semisodium equivalent to 250mg of valproic acid
Syonell 500mg Gastro-Resistant Tablets each gastro-resistant tablet contains 500mg of valproate semi sodiumSyonell 500mg Gastro-Resistant Tablets each gastro-resistant tablet contains 538.12mg of valproate semisodium equivalent to 500mg of valproic acid

The amounts of active pharmaceutical ingredient are stated correctly in the respective Patient Information Leaflets (PIL) and Summary of Product Characteristics (SmPCs).

Syonell 250mg Gastro-Resistant Tablets with PL 35507/0191

Batch NumberExpiry DatePack SizeFirst Distributed
G908002Sep – 213006/01/2020
G908614Oct – 213008/04/2020
G908561Oct -213020/03/2020
G003139Mar- 223018/06/2020
G003899Apr- 223025/09/2020
G003900Apr- 223005/10/2020
G003901Apr- 223004/02/2021

The following batches have been packed and are awaiting distribution

Batch NumberExpiry DatePack SizeFirst Distributed
G004456May-2230
G004457May-2230

Syonell 500mg Gastro-Resistant Tablets PL 35507/0192

Batch NumberExpiry DatePack SizeFirst Distributed
G908002Sep – 213027/12/2019
G908441Oct – 213009/03/2020
G908835Oct -213015/03/2020
G000647Dec – 213020/03/2020
G000648Dec – 213005/04/2020
G002361Feb – 223011/05/2020
G002362Feb – 223012/05/2020
G002363Dec- 213028/05/2020
G002901Mar -223018/06/2020
G004160Apr – 223024/09/2020
G004161Apr – 223027/09/2020
G004168Apr – 223026/10/2020
G004169Apr – 223008/12/2020
G004170Apr – 223001/02/2021
G004171Apr – 223009/03/2021
G004931May – 223011/01/2021

The following batches have been packed and are awaiting distribution

Batch NumberExpiry DatePack SizeFirst Distributed
G004936May-2230
G004938May-2230
G004940May-2230
G004941May-2230
G004932May-2230
G004933May-2230

The MHRA further added that, the healthcare professionals are advised to exercise caution when dispensing the product. There is no risk to product quality as a result of this issue, therefore the affected batches are not being recalled.