NUSAVA B12 Liquid Drops 5000mcg, Raspberry, Pack of 2

Customers find the B12 liquid drops effective and easy to use, noting they work quickly and are simple to take. They report positive effects on energy levels, sleep quality, and overall wellness, with one customer specifically mentioning improvements in their B vitamin levels. The taste receives mixed feedback, with some finding it good while others describe it as terrible, and customers report mixed experiences with side effects, with some feeling better while others experience nausea. The product has an unpleasant smell.