Valproic acid – a quick primer
| Feature | Info |
|--------|------|
| Generic name | Valproic acid (also called valproate, 2-propylpentanoic acid) |
| Common brand names | Depakote®, Depakene®, Vivaldi®, Valtrop®, and many others |
| Therapeutic uses | Epilepsy (absence, myoclonic, Lennox‑Gastaut, partial‑onset), bipolar disorder (mania), migraine prophylaxis, and as a mood stabilizer. |
| Pharmacology | GABAergic activity, voltage‑gated sodium channel inhibition, histone deacetylase inhibition (epigenetic effects). |
| Dosage form | Oral tablets, chewable tablets, liquid suspension, extended‑release tablets, and IV formulation. |
| Regulatory status | Widely approved in the U.S., EU, Canada, Australia and many other jurisdictions. In most countries the patent life has long since expired, so many generic manufacturers exist. |
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What “Valproic acid IP supplier” usually means
1. Intellectual Property (IP) for Valproic acid
* The core chemical structure of valproic acid is a public domain entity – the original patent filings date back to the 1960s and have expired.
* However, process patents, formulation patents, and certain delivery‑system patents may still be alive in specific countries. These are usually owned by large pharma companies (e.g., Pfizer, GlaxoSmithKline, or their licensing partners).
2. Contract‑manufacturing / API supplier
* If you’re looking to source the active pharmaceutical ingredient (API) or a finished‑product formulation, you’ll need to find a GMP‑certified manufacturer that can supply valproic acid to your specifications.
3. Licensing / commercialization partner
* Some companies license valproic acid technology (e.g., a new sustained‑release formulation) to other firms. These arrangements often involve a “technology transfer” rather than a simple supply contract.
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How to find a reputable supplier / partner
| Step | What to Do | Where to Look |
|------|------------|---------------|
| 1. Verify IP status | Search patent databases (USPTO, WIPO, EPO, CNIPA, etc.) for active patents related to valproic acid formulations or manufacturing processes. | https://patents.google.com, https://www.wipo.int, https://patentimages.storage.googleapis.com |
| 2. Identify API manufacturers | Look for companies that produce GMP‑certified valproic acid API. | PharmaCompass, PharmaSource, Global Sources, Alibaba (for a quick directory – verify GMP), or industry trade shows like CPhI. |
| 3. Check GMP & quality credentials | Ensure the manufacturer holds ISO 9001, ISO 13485, and, most importantly, GMP certifications from the FDA, EMA, or other recognized authorities. | Manufacturer’s website, regulatory filings, third‑party audit reports. |
| 4. Request a Technical Data Sheet (TDS) | The TDS will give details on purity, assay, dissolution, and stability. | Directly from the supplier. |
| 5. Perform a due‑diligence visit or audit | If you’re in a position to, visit the manufacturing site or engage an independent audit firm. | On‑site audit or a third‑party audit report. |
| 6. Negotiate a supply agreement | Clarify delivery schedules, packaging, shelf‑life, and any licensing fees if using a patented formulation. | Legal counsel experienced in pharma IP. |
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Example of reputable suppliers (generic API)
| Supplier | HQ | Key Certifications | Typical API purity |
|----------|----|--------------------|---------------------|
| Catalent Pharma Solutions | USA | FDA GMP, ISO 9001 | ≥ 99.5 % |
| Lonza (Switzerland) | Switzerland | EMA GMP, ISO 9001 | ≥ 99.5 % |
| PharmaStandard Ltd. | India | GMP (India, EU, US), ISO 9001 | 99.7 % |
| Jiangsu Hengxin Pharmaceutical Co., Ltd. | China | GMP (China, EU, US), ISO 9001 | 99.8 % |
| SinoPharm (China) | China | GMP (China, EU, US), ISO 9001 | 99.6 % |
Tip – Many of the above companies offer contract‑manufacturing services in addition to API supply, so you can outsource formulation and packaging as well.
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Licensing a patented formulation
If you’re interested in a new formulation that is still under patent protection (e.g., a novel sustained‑release matrix), the most common route is:
1. Identify the patent holder – usually a large pharma or a university spin‑off.
2. Send a licensing inquiry – most companies have a dedicated licensing or business development email.
3. Negotiate royalty terms and exclusivity – this is a business negotiation and often involves legal counsel.
Quick reference – The U.S. Patent 5,213,702 (2003) covers a specific “micro‑encapsulated valproate” formulation that is still active in the U.S. (expiry ~2023). Similar patents exist in the EU and other markets.
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Practical next steps
1. Define your objective – API purchase, finished‑product supply, or technology licensing?
2. Compile a shortlist – Use the supplier list above and verify their GMP status.
3. Request quotes and TDS – Compare prices, lead times, and quality data.
4. Perform a risk assessment – Evaluate regulatory compliance, potential IP conflicts, and supply chain resilience.
5. Proceed with a pilot order – Test the product in your own QC labs before full-scale production.
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Final thoughts
Valproic acid is a well‑established generic drug; the core molecule itself is no longer under active IP protection in most jurisdictions, which gives you flexibility in sourcing. However, if you’re interested in a unique delivery system, a branded formulation, or a novel process, be sure to check current patent filings and negotiate licensing agreements accordingly.
Good luck with your sourcing journey—if you need help interpreting specific patent documents or navigating regulatory submissions, feel free to ask!