These transdermal delivery products use the reservoir system:

• Nicoderm CQ^® (nicotine),
• Estraderm^® (estradiol),
• Duragesic^® (fentanyl),
• Transderm-Scop^® (scopolamine),
• Catapres-TTS^® (clonidine),
• Transderm-Nitro^® (nitroglycerin),and
• Testoderm^® and Androderm^® (testosterone).

These transdermal delivery products use the matrix system:

• Ortho Evra^TM (norelgestromin/ethinyl estradiol transdermal system),
• Climara^® (estradiol),
• CombiPatch^® (estradiol and progesterone),
• Nitro-Dur^® (nitroglycerin),
• Habitrol^® and Nicotrol^® (nicotine), and
• Testoderm^® (testosterone)

Note: Many of the above products have been on the market for some time and obviously perform well. It is not our intention here to discuss the merits of one delivery system over another since Ortho Evra^TM will not directly compete against any current transdermal product.