Heat 1/2 cup water in a small saucepan until hot but not boiling.
Put 1 cup elderberry syrup in a small bowl and sprinkle 1/4 cup gelatin on top. Stir very gently to combine, just enough to moisten the gelatin powder. Let the gelatin sit for a minute until it starts to gel a bit.
Add hot water to gelatin/syrup mixture and whisk together until well-mixed and gelatin has dissolved.
Pour mixture into molds (or use a small dropper to carefully drop into the molds).
Refrigerate for 1-2 hours or until firm.
Remove gummies from molds and place in an airtight container.
Store in refrigerator for up to 2 weeks.
We take a few of these daily (depending on the size of the mold you used, the amount will vary) if we've been exposed to illness.