Washington Revised Code Title 70. Public Health and Safety § 70.54.190. DMSO (dimethyl sulfoxide)--Use--Liability

No hospital or health facility may interfere with the physician/patient relationship by restricting or forbidding the use of DMSO (dimethyl sulfoxide) when prescribed or administered by a physician licensed pursuant to chapter 18.57 or 18.71 RCW and requested by a patient under his/her care who has requested the substance after having been given sufficient information in writing to make an informed decision.

No physician may be subject to disciplinary action by any entity of either the state of Washington or a professional association for prescribing or administering DMSO (dimethyl sulfoxide) to a patient under his/her care who has requested the substance after having been given sufficient information in writing to make an informed decision.

It is not the intent of this section to shield a physician from acts or omissions which otherwise would constitute unprofessional conduct.