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Akten® (lidocaine hydrochloride ophthalmic gel) 3.5% is a sterile, preservative-free, single patient use ophthalmic gel preparation for topical ocular anesthesia. Lidocaine hydrochloride is designated chemically as acetamide, 2-(diethylamino)-N-(2,6- dimethylphenyl) monohydrochloride with a molecular formula of C14H22N2O HCl and molecular weight of 270.8. The structural formula of the active ingredient is:

Akten® contains 35 mg of lidocaine hydrochloride per mL as the active ingredient. Akten® also contains Hypromellose, Sodium Chloride, and Water for Injection as inactive ingredients in the 1 mL tube configuration. Akten® contains Hypromellose, Sodium Chloride, and Purified Water as inactive ingredients in the 5 mL in 10 mL bottle configuration. The pH may be adjusted to 5.5 to 7.5 with Hydrochloric Acid and/or Sodium Hydroxide.