But only by reading ingredient labels can you tell if this is true. For example, the Liquid IV label includes at least two mentions of salt or sodium plus potassium. Nuun mentions sodium and ...

Immune globulin (human) 10% (100mg/mL); liq for IV or SC infusion; preservative-, sucrose- and latex-free. Gammagard Liquid supplies ... Dose adjustments: see full labeling.