They do work for many people, though there are a number of serious side effects
It should not never be given to neonates or infants , because benzyl alcohol can cause serious toxicity (the gasping syndrome in preterm babies)
[DOI] [PMC free article] [PubMed] [Google Scholar] 22.Jain AB, Kanters S, Khurana R, Kissock J, Severin N, Stafford SG
Other Markets Japan, Australia, Canada, and several other countries have their own approval pathways
Ultrastructurally, three types of cytoplasmic inclusions have been described: dense reticulated substance in the dilated cisternae of rough endoplasmic reticulum, fine granular substance in rough endoplasmic reticulum, and nonmembrane bound dense granulofibrillar in the cytoplasm (Helyer and Petrelli 1978)
The tricky part is that pricing, medical review quality, and support vary a lot between providers