Can peppermint oil help relieve sciatica?

Yes: Topical peppermint oil to the back may relax the muscles and ease sciatic pain. Warm soaks in epsom salts can be helpful as well. Consider a prenatal massage if it persists.

Not Likely: Not likely that any time of topical substance will actually help the condition of sciatica. Sciatica is due to nerve root compression at a much deeper level than that of the skin where peppermint oil is applied. Although symptomatically the oil may feel good and typically will not be of harm it is only providing symptomatic relief at best for reasons unrelated to the underlying condition.

You can try: although if it does, it will be transient only. Likely you will need more than peppermint oil to help.