Some brand names of dextromethorphan may consist of aspartame, a source of the amino acid phenylalanine; use with caution in people with phenylketonuria, an inherited affliction that causes buildup of phenylalanineDextromethorphan tergolong obat antitusif atau penekan batuk. Obat ini bekerja mengurangi sinyal batuk dari otak sehingga keinginan untu