Most of the time, in hospitals, to improve the body's hydration, Intravenous Therapy (IV) is given. During the therapy, the bottle's liquid level needs to be monitored continuously. The bottle needs to be changed immediately, once it got empty, to prevent the blood's reverse flow through the intravenous tube. Any lack of monitoring or continuous assessment of the liquid level and the delay in refilling the bottle may cause adverse effects. To minimize the risk factor of the treatment and reduce the workload of the nurse/hospital staff, an IoT – Based Liquid Level Monitoring System has been developed. This system measures the liquid level continuously using a load cell sensor. Whenever the fluid level drops down below a threshold point, an instant alert is made to the concerned nurse/staff using Arduino. Thus this system becomes useful for nurses and patients during day time as well as night-time.