How do you stop excessive phlegm production during cold?

The best way to relieve this is to gargel with salt water, it will dry out the phlegm. On the other hand, why would you want to??? As inconvenient as it may seem, these are the processes that your body is using to overcome the sickness. Nobody likes diarrhea, right? That, however, is the body's way of flushing out toxins or poisons from the body in the quickest way posible. This situation is no different. The body is merely trying to rid itself of that which burdens it...in any way possible. The harder you fight your body's infinite wisdom, the harder you make it for yourself.