Praziquantel Patent Expiration
Praziquantel was first introduced by Bayer Healthcare Pharmaceuticals Inc
About Veterinary Praziquantel
Praziquantel is used in drugs marketed by 4 different companies: Elanco Us Inc, Bimeda Animal Health Ltd, Cronus Pharma Specialities India Private Ltd, Felix Pharmaceuticals Pvt Ltd.
Other drugs containing Praziquantel are: Prazitech , Prazi c tablets (otc), praziquantel tablets (rx) , Praziquantel injection , Praziquantel tablets
Praziquantel Petitions
Details of Praziquantel's suitability petitions are listed below.
| Petitioner | Action | Date of Action | Description |
|---|---|---|---|
 | |||
| Gelteq Ltd | Approved | ||
| Dr. James H. Schafer, US Agent for Felix Pharmaceuticals Private Limited | Approved | ||
| Noble Pharma, LLC | Filed | ||
| IVX Animal Health, Inc. | Approved | ||
| Equi Aid Products, Inc. | Denied | 15 Apr, 1996 | The generic product would be a palatable product to mix with cat food instead of the tablet dosage form of the pioneer product; and 2) pyrantel pamoate would be the only active ingredient instead of pyrantel pamoate and praziquantel. The pioneer product is Drontal Tablets, NADA 141-008, sponsored by Bayer Corp., Agriculture Division, Animal Health. |
Praziquantel's Family Patents
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Clinical Trials
Recent Clinical Trials on Praziquantel:
Sometimes companies keep conducting clinical trials even after the drug's approval to discover new formulations, methods of use, or new treatment indications, so they could file for additional patents or receive regulatory exclusivity extensions, such as pediatric exclusivity, potentially delaying generic competition. Based on these recent clinical trials, generic companies need to consider the potential for new intellectual property or regulatory hurdles. These strategic moves by the drug owner might delay generic substitution or lead to additional sales of the brand drug, even after patent expiry.
| Title | Lead Sponsor | Collaborators | Status | Phases |
|---|---|---|---|---|
 | ||||
| Efficacy and Safety of Ascending Doses of Arpraziquantel in Children Infected With Opisthorchis Viverrini | Jennifer Keiser | NA |
RECRUITING
(Aug 1, 2026)
| PHASE2 |
| Different Treatment Frequencies for Hepatic Fibrosis Due to Schistosomiasis | Rhode Island Hospital | NA |
NOT YET RECRUITING
(Aug 1, 2026)
| PHASE2, PHASE3 |