Delzicol vs. Asacol

Why the Switch?

It has been suggested that Warner Chilcott replaced Asacol with Delzicol because the Asacol tablets contained dibutyl phthalate (DBP), a substance which the FDA recommends removing from human drug products. Delzicol does not contain DBP. However, this reasoning seems a bit unlikely, because Asacol HD tablets (which contain DBP) were left on the market.
Others have suggested that this was a ploy to extend the patent life for the drug, which will run out in July 2013. However, this is probably not the case, as it does not appear that the manufacturer was given any additional patent protection time for the new product (for which the patent also expires in July 2013). The manufacturer's Web site suggests that the switch was made because many people find capsules easier to swallow compared to tablets. At this time, the exact reasons for the switch are unclear.

Delzicol Medication Information

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