> but you can't find any meaningful review because they are white labels

Which is one of the reasons they exist. You fortunately for more commons stuff have the original manufacturer+product name which gets rebranded into alphabetsoup as soon as it get's popular. If you can figure out the original name, or if it's advertised as, you can maybe lookup some reviews. Otherwise: stay away, but normal consumers tend no to know that because "it's on amazon" (or equivalent).