Acknowledgements This study was financially supported by grants from the Academy of Finland (AK297267, AK328443, and KK296840, KK333302), the Kuopio University Hospital VTR grant (KK5503743), the Emil Aaltonen Foundation, the Sigrid Juselius Foundation, the Pivikki and Sakari Sohlberg Foundation, the Finnish Cultural Foundation, and the Finnish Eye Foundation
For example, retinol has strong evidence for efficacy, but shouldnt be used outdoors and the Environmental Working Group gives it a high hazard score of 9
In other words, it should only be used as a vehicle for other drugs, not as fluid replacement
The right choice depends on your medical history, how you tolerate each medication, your goals, and cost and availability