May 30, 2017
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Zembrace SymTouch

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(sumatriptan succinate) Injection


ZEMBRACE SymTouch injection contains sumatriptan succinate, a selective 5-HT1B/1D receptor agonist. Sumatriptan succinate is chemically designated as 3-[2-(dimethylamino) ethyl]N-methyl-indole-5-methanesulfonamide succinate (1:1), and it has the following structure:

ZEMBRACE™ SymTouch™ (sumatriptan succinate) Structural Formula Illustration

The empirical formula is C14H21N3O2S•C4H6O4, representing a molecular weight of 413.5. Sumatriptan succinate is a white to off-white powder that is readily soluble in water and in saline.

ZEMBRACE SymTouch is a clear, colorless to pale yellow, sterile, nonpyrogenic solution for subcutaneous injection. Each 0.5 mL of ZEMBRACE SymTouch contains 4.2 mg of sumatriptan succinate equivalent to 3-mg of sumatriptan (base) and 4.15 mg of sodium chloride, USP in Water for Injection, USP.

The pH range of solution is approximately 4.2 to 5.3 and the osmolality of injection is approximately 291 mOsmol (275 to 315 mOsmol).

Last reviewed on RxList: 3/30/2017
This monograph has been modified to include the generic and brand name in many instances.

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