DrugDigest: Fentanyl ( Duragesic )
Information on dosage, usage, side effects, interactions, and drug comparisons, including generics when available. Duragesic
Product information for US health care providers and consumers. MedlinePlus: Fentanyl Skin Patches
Features information about dosage, usage, warnings, and side effects. Duragesic
Full prescribing information from RxList.