Hello jlonneke and welcome to DC. I am not sure why you need to know shapes and sizes. Do you mean "strengths" and how they "look"??? Depending on the manufacturer... they do come in various rectangular shapes. They come in many different doses too. Your prescribing doctor is the best one to talk this issue over with. I am on 100mcg of fentanyl patch and change it every 3 days. Watson is the manufacturer of the one I use. They are not the only manufacturer...
Be well and take good care of you.
- Fentanyl Information for Consumers
- Fentanyl Information for Healthcare Professionals (includes dosage details)
- Side Effects of Fentanyl (detailed)
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