What's the best way to get a prescription for finasteride or propecia when one doesn't have a doctor or health insurance?

Prescription requird: These are prescription drugs and can only be written by people with a license to prescribe drugs. If it is something you are concerned about, then you should be able to see a doctor and pay cash for an exam to make sure it is something that would be safe for you to take. Most places have a clinic for low income and underinsured patients too. The medicine you mention is not expensive, usually.

See a dermatologist: The only legal way to get a prescription is to be examined diagnosed and then treated if appropriate.