Which of the following anesthetics available in the US contains epinephrine 1:200,000?

Epinephrine is often added to local anesthetics to prolong their effectiveness and reduce bleeding in the surgical area. When considering commonly used local anesthetics in the U.S., articaine is among those that can be formulated with epinephrine at a ratio of 1:200,000. Both articaine and lidocaine are frequently paired with such an epinephrine concentration.

Lidocaine is widely used as a topical and injectable anesthetic, and it is also available in a formulation with epinephrine. Specifically, it is common to find lidocaine with epinephrine concentrations of 1:100,000 or 1:200,000.

Mepivacaine and prilocaine, however, generally do not come with epinephrine in the same way. Mepivacaine often does not contain a vasoconstrictor, while prilocaine is sometimes available without epinephrine or in a concentration that doesn’t include the 1:200,000 formulation.

Since both articaine and lidocaine are available with epinephrine at a ratio of 1:200,000, the correct choice acknowledges both of these anesthetics. Thus, the answer is that both articaine and lidocaine (as