Guaifenesin is an expectorant. It works by thinning and loosening mucus in the airways, clearing congestion, and making breathing easier. Phenylephrine is a decongestant (sympathomimetic). It reduces nasal congestion by narrowing the blood vessels in the nose.luids will help to break up mucus and clear congestion. If you are using the liquid form of this medication, carefully measure the dose using a special measuring device/spoon. Do not use a household spoon because you may not get the correct dose.
A root barrier is essentially an underground wall that keeps plants and hardscapes from conflicting. There are two types of root barriers: mechanical and chemical. Chemical barriers work by stopping the growth of the tree root when it reaches the barrier, by killing the tree roots that come into contact with it.
Barrier Devices. Help students and rescuers prevent the spread of germs both in the classroom and in real-life rescues with these practical barrier devices.