This reduction in GSH synthesis may contribute to excessive oxidative stress in infants
News Release December 30, 2002 Top quality melatonin products identified by ConsumerLab.com Hormone supplement used to treat sleep disturbances due to jet travel and other causes WHITE PLAINS, NY December 30, 2002 In its latest Product Review, ConsumerLab.com found that 16 of 18 melatonin dietary supplements met their label claims and were free of lead contamination
R.KrustA.ChambonP.et al (2014)
Yes, both will likely be more expensive
So get it from DrWell, where the vial arrives already premixed under sterile conditions so you dont have to mix it yourself (reconstitute), potentially introducing bacteria into the vial.
Source quality emerges repeatedly as the dominant variable separating success from disappointment