Vitamin K1, also known as phytonadione, is given as an injection to newborn babies. It comes in an emulsion made by Hospira, Inc. The injection contains 9 mg of benzyl alcohol, which acts as a preservative. Benzyl alcohol is used in various products like perfumes, flavors, antibacterials, cosmetics, ointments, ballpoint pen ink, stencil ink, and hair dye as a preservative. In the context of the vaccine for newborns, it serves as a solvent and preservative. However, it's essential to take precautions as it is highly toxic and can be harmful if swallowed, inhaled, or comes into contact with the skin or eyes. Some of its synonyms include BENZAL ALCOHOL, BENZENECARBINOL, BENZENEMETHANOL, PHENOCARBINOL, PHENYLMETHANOL, and PHENYLMETHYL ALCOHOL.

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