L-arginine has been studied in combination with the standard of care, oral type-5 phosphodiesterase (PDE-5) inhibitors, for erectile dysfunction. The efficacy of a combination of L-arginine, nicotinic acid, and propionyl-L-carnitine (PLC) with and without the PDE-5 inhibitor, vardenafil, was assessed in men with diabetes and erectile dysfunction.
Oroville Dam. Once called the ninth wonder of the world, the Oroville Dam is the tallest dam in the United States, besting Hoover Dam by more than 40 feet. Built between 1962 and 1968, the Oroville Dam is comprised of more than 85 million cubic yards of earth. Tours are available by appointment only.
At 770 feet tall the Lake Oroville Dam is the tallest in the U.S. It was finished in 1967. Here is a profile of dams in California from the National Inventory of Dams. Southern California dams and reservoirs are not in danger of overflowing. The greatest threat has been flash floods in canyon and desert areas.