About 71 percent of the Earth's surface is water-covered, and the oceans hold about 96.5 percent of all Earth's water. Water also exists in the air as water vapor, in rivers and lakes, in icecaps and glaciers, in the ground as soil moisture and in aquifers, and even in you and your dog. Water is never sitting still. If all of the world's water was poured on the contiguous United States, it would cover the land to a depth of about 107 miles (145 kilometers). 2  Of the freshwater on Earth, much more is stored in the ground than is available in lakes and rivers.
If you happen to take too much Namenda, overdose symptoms may include drowsiness, changes in heart rhythm, vomiting, and unconsciousness. NamendaÂ® (memantine hydrochloride) is a prescription medication used to treat Alzheimer's disease. It belongs to a group of medications known as NMDA receptor antagonists.
The most common side effects associated with NAMENDA XR treatment are headache, diarrhea, and dizziness. This is not a complete list of side effects. NAMENDA XR extended-release capsules are approved for the treatment of moderate to severe Alzheimer's disease. NAMENDA XR is available by prescription only.