Mechanism of Action. Levocetirizine, the active enantiomer of cetirizine, is an anti histamine; its principal effects are mediated via selective inhibition of H1 receptors. The antihistaminic activity of levocetirizine has been documented in a variety of animal and human models. In vitro binding studies revealed that levocetirizine has an affinity for the human H1-receptor 2-fold higher than that of cetirizine (Ki = 3 nmol/L vs. 6 nmol/L, respectively).
Backcountry Splitboarding in Oregon and Beyond! Bend Glacier. The Bend Glacier is the largest of Broken Topâs two named glaciers, and is located on the north/northeast side of the mountain. Itâs meltwater feeds the headwaters of Squaw Creek, which eventually empties into the Deschutes River.
Denali's Howl: The Deadliest Climbing Disaster on America's Wildest Peak [Andy Hall] on Amazon.com. *FREE* shipping on qualifying offers. Denaliâs Howl is the white-knuckle account of one of the most deadly climbing disasters of all time. In 1967