Abdul El-Sayed criticized Mehmet Oz for selling health products as a doctor, then used his own medical credentials to promote supplements and devices.
https://www.foxnews.com/politics/doctor-el-sayeds-bizarre-health-hustle-raises-campaign-headache-moon-juice-brain-dust
https://www.foxnews.com/politics/doctor-el-sayeds-bizarre-health-hustle-raises-campaign-headache-moon-juice-brain-dust