The primary use of dextromethorphan is as a cough suppressant, for the temporary relief of cough caused by minor throat and bronchial irritation (such as commonly accompanies the flu and common cold), as well as those resulting from inhaled particle irritants.
As of Q4 2016, South Korea had the fastest average internet connection in the world at 26.1 Mbit/s according to the report State of the Internet published by Akamai Technologies. South Korea's speed is almost four times faster than the world average of 7.0 Mbit/s.
Fastest ISP XFINITY. XFINITY from Comcast is the nation's largest video, high-speed Internet and phone service provider. They offer a wide variety of speeds and over the last several years have increased performance by introducing 105Mbps, 150Mbps and now 250Mbps service using DOCSIS 3 cable technology. XFINITY also provides a 505Mbps fiber-based service in some areas.