Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not working for my hamster

I bought this for my hamster whose going through hair loss (advice I got from multiple online resources). I've actually haven't this myself, but from what I see and with my poor knowledge of yeast tablets I'd say this is very high quality stuff. My hamster hasn't grown back her fur yet, but that might just be due to her old age and nothing to do with the yeast tablets effectiveness.*This product is also garlic-free and safe for hamsters. (source: I found the scientific name for garlic and checked the ingredients of Solgar's official website)