Application of Theophylline Anhydrous as Inhibitor of Acid Corrosion of Aluminum Zinc corrosion in HCl in the presence of aqueous extract of Achillea fragrantissima Investigation of caffeic acid as an inhibitor for aluminum-silicon alloy corrosion Sildenafil drug as a safe anticorrosion for 6063 aluminum alloy in acidic and alkaline solutions: Theoretical and experimental studies Inhibitive performance of dapoxetine drug for corrosion of aluminum alloy (AA6063) in acidic and alkaline solutions: experimental and theoretical studies using Materials Studio v7.0