Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good product

Very good mix of vitamins that gives you a long lasting boost of energy. I feel healthier, I sleep 5 to 6 hours now instead of 7 to 8. I can feel that my immunity system got stronger, I haven't had cold or flu since I started taking it. My favorite part is that it's gelatin free since I don't consume any pork products. Forgot to mention that you can take it on an empty stomach with no funny feelings. I recommend taking it with or before breakfast for best results. And yeah. It's the cheapest on the market compared to other brands .