Diphenhydramine (Benadryl) is the most common first-generation antihistamine found in OTC sleep aids, whether used alone or in combination with pain relievers, including acetaminophen (eg, Tylenol PM), ibuprofen (eg, Advil PM), and aspirin. Other sleep aids often contain the antihistamine doxylamine (eg, Unisom).
The output of a wind turbine depends on the turbine's size and the wind's speed through the rotor. An average onshore wind turbine with a capacity of 2.5â3 MW can produce more than 6 million kWh in a year â enough to supply 1,500 average EU households with electricity. An average offshore wind turbine of 3.6 MW can power more than 3,312 average EU households.
1 In 2007, average cost per kilowatt hour of electricity generated by utility-scale wind turbines was 4â7Â¢ per kilowatt hour.  One 10 kilowatt wind turbine system, operating at a site where the average wind speed is at least 12 mph, can generate around 10,000 kilowatts per year.