The recommended dose is 50 mg taken as needed approximately one hour before sexual activity. Based on efficacy and tolerability, the dose may be increased to 100 mg or decreased to 25 mg. The maximum recommended dose is 100 mg.
Ivan IV, Ivan the Fourth, also known as Ivan the Terrible, was the first ruler of Russia to give himself the title tsar. This happened in 1547. The first czar of Russia was Ivan IV (Grozny) Before that sovereigns of Russia used title The Great Knyaz. Ivan Grozny was the first Russia's sovereign, who officially used the Czar in title. Both part were used together - Czar and the Great Knyaz.
Cossack soldier who sparked a gigantic uprising of serfs (1773) in Russia during the reign of Catherine the Great-he proclaimed himself the true tsar and issued decrees abolishing serfdom, taxes, and army service-thousands joined him, slaughtering landlords and officials-lost to Russian army-he was captured and savagely executed during Catherine the Great's Reign.