Guanfacine manufacturer?

Which companies make guanfacine?

Guanfacine is sold by multiple manufacturers, depending on the country and on whether the product is immediate-release (IR) or extended-release (ER).

How do I find the right manufacturer for my specific guanfacine product?

The manufacturer is tied to the exact product presentation, so the most reliable way is to check:
- The label (brand name and strength)
- Whether it says “extended-release” (ER) or “immediate-release” (IR)
- The national drug code (NDC) or equivalent identifier on the package/receipt (U.S. users)

If you share the brand name (or whether it’s Intuniv ER vs immediate-release guanfacine) and your country, I can narrow down which manufacturers typically produce that exact product.