SulfonesPurinesPiperazinesPhosphodiesterase InhibitorsPhosphodiesterase 5 Inhibitors3',5'-Cyclic-GMP PhosphodiesterasesErectile DysfunctionCyclic Nucleotide Phosphodiesterases, Type 5CommercePenile ErectionHomosexuality, MaleMethamphetamineVasodilator AgentsCyclic GMPGeorgiaTaxesDrug CostsCosts and Cost AnalysisDrugs, GenericUnsafe SexRisk-TakingSexual BehaviorEconomic CompetitionInflation, EconomicFees and ChargesFees, PharmaceuticalDrugs, EssentialInvestmentsModels, EconometricAlcoholic BeveragesRate Setting and ReviewDrug IndustryModels, EconomicCost ControlPrice ListsMarketingPrescription FeesFood SupplyHealth Care SectorNegotiatingBook PricesUnited StatesHealth ExpendituresFoodEconomicsCost-Benefit AnalysisCost SavingsTobacco ProductsTobacco IndustryMarketing of Health ServicesHospital ChargesPatents as TopicEconomics, BehavioralConsumer SatisfactionEconomics, PharmaceuticalPrivate SectorPublic PolicyHealth Care CostsEconomics, HospitalInsurance, Pharmaceutical ServicesGroup PurchasingEnergy-Generating ResourcesIncomeTechnology, High-CostGovernment RegulationCopyrightInsurance, Health, ReimbursementArkansasReimbursement MechanismsHealth PolicyPharmaciesEconomics, MedicalPublic SectorCost SharingDrug and Narcotic ControlSmokingUnited States Federal Trade CommissionFood PreferencesInternationalityOwnershipEquipment and SuppliesDeveloping CountriesChoice BehaviorAnimal HusbandryFood IndustryUnited States Government AgenciesConsummatory BehaviorPharmaceutical PreparationsPurchasing, HospitalCost AllocationHealth Benefit Plans, EmployeeManaged CompetitionFormularies as Topic