Ethacrynic Sodium and Synera

• Generic Name: ethacrynic acid
• Dosage Forms: tablets; powder, for solution
• Other Brand Names: Edecrin, Edecrin Sodium, Sodium Edecrin

Ethacrynic acid is a loop diuretic (water pill) that prevents your body from absorbing too much salt, allowing the salt to instead be passed in your urine.

Ethacrynic acid is used to treat fluid retention (edema) in people with congestive heart failure, liver disease, or a kidney disorder such as nephrotic syndrome.

Ethacrynic acid may also be used for purposes not listed in this medication guide.

• Generic Name: lidocaine / tetracaine topical
• Dosage Forms: skin patch
• Other Brand Names: Synera, Pliaglis

Synera patches contain a combination of lidocaine and tetracaine. Lidocaine and tetracaine are local anesthetics (numbing medicines). They work by blocking nerve signals in your body.

Synera patches are used to numb a small area of your skin. This can help prevent pain during certain medical procedures such as a skin biopsy, minor skin surgery, insertion of an intravenous (IV) needle, or other needle-stick procedures.

Synera patches are also used to numb a skin area during minor cosmetic procedures such as a Botox injection, laser treatment, or tattoo removal.