Elderberry cough syrup is a simple preparation you can make at home with dried elderberries, water, honey, and a few optional spices. The process involves simmering berries into a concentrated liquid, straining them out, and stirring in honey once the mixture cools. The whole process takes about an hour, and the result is a thick, sweet syrup that lasts up to two weeks in the fridge.
What You Need
The core of any elderberry syrup is dried black elderberries, water, and raw honey. A good starting ratio is 1 ounce of dried elderberries by weight to every 4 ounces of water by weight. For a practical home batch, that works out to roughly 1 cup of dried elderberries to about 3 cups of water.
Honey serves two purposes: it sweetens the syrup and acts as a natural preservative. You’ll want to add honey in a volume equal to at least half the liquid you have left after simmering. So if you end up with 2 cups of strained liquid, stir in at least 1 cup of honey.
Many recipes include extras for flavor and additional soothing properties. Common additions are a cinnamon stick, a few whole cloves, a thumb-sized piece of fresh ginger (sliced), or a star anise pod. These are entirely optional, but ginger and cinnamon pair well with the berry flavor and add warmth that feels good on a sore throat.
Step-by-Step Instructions
Combine the dried elderberries and water in a saucepan. If you’re using ginger, cinnamon, or cloves, add them now. Bring everything to a boil, then reduce the heat and let it simmer uncovered for 45 minutes to an hour. The liquid should reduce by roughly half. You’ll notice the berries have softened and the water has turned a deep, dark purple.
Remove the pot from heat and let it cool until it’s warm but comfortable to touch. This step matters because high heat can break down beneficial compounds in honey. Once cooled, pour the mixture through a fine-mesh strainer or cheesecloth into a large bowl or measuring cup. Press the berries with the back of a spoon to squeeze out as much liquid as possible, then discard the solids.
Measure how much liquid you have, then stir in honey at the ratio described above (at least half the volume of liquid). Stir until the honey is completely dissolved. Pour the finished syrup into a clean glass jar with a tight-fitting lid.
Why Cooking Is Not Optional
Raw elderberries contain cyanogenic glycosides, compounds that can release small amounts of cyanide in the body. This is not a theoretical risk. The CDC documented a case in California where 11 people became ill within 15 minutes of drinking juice made from improperly prepared elderberries. Symptoms included nausea, vomiting, abdominal cramps, weakness, dizziness, and numbness. One person was hospitalized in a stuporous state.
Cooking the berries eliminates this danger. According to Oregon State University Extension, all varieties of raw elderberries should be cooked before consuming. This applies whether you’re using fresh or dried berries. If you start with dried elderberries, they need to be rehydrated in water and cooked, not simply soaked. The simmering step in this recipe is long enough to break down those toxic compounds and make the syrup safe.
How to Store It
Homemade elderberry syrup keeps in the refrigerator for about 2 weeks. If you’ve made a larger batch than you can use in that window, freeze the extra in ice cube trays or small freezer-safe containers. Frozen syrup maintains its quality for 6 to 8 months. The honey helps preserve the syrup, but without the commercial stabilizers found in store-bought versions, it will eventually ferment or mold at fridge temperatures. If it starts to smell boozy, develops bubbles, or shows any visible mold, toss it.
How Much to Take
There’s no universally standardized dose for homemade elderberry syrup. Studies on commercially prepared elderberry extract have used 1 tablespoon four times a day for adults during cold and flu season. For children over the age of 1, many herbalists suggest half that amount. You can take it straight off the spoon, stir it into warm water or tea, or drizzle it over oatmeal or yogurt.
One important safety note: do not give this syrup to babies under 12 months old. Honey can contain spores of the bacterium that causes infant botulism, a serious form of food poisoning. These spores are heat-resistant, so even cooking the syrup doesn’t eliminate the risk for infants.
Does Elderberry Actually Help With Coughs?
Elderberry’s reputation as a cold and flu remedy is widespread, and there is some scientific basis for it. The berries are rich in anthocyanins, a type of antioxidant that has shown antiviral activity in lab studies. Researchers have found that elderberry extracts can interfere with how certain viruses bind to and enter human cells, at least in test-tube experiments.
Clinical evidence in humans, however, is more mixed than you might expect. A well-designed placebo-controlled trial found no significant difference in flu symptom duration between people taking elderberry syrup and those taking a placebo. Both groups saw symptoms resolve to mild levels in about 5 days and reach full resolution around 8 to 9 days. Earlier, smaller studies had reported benefits, but the most rigorous trial to date did not confirm them.
That said, the syrup itself may still provide some comfort for coughs through simpler mechanisms. Honey has a well-documented ability to coat and soothe an irritated throat, and it performs comparably to some over-the-counter cough suppressants in studies on nighttime cough in children. So even if the elderberry component’s antiviral effects don’t translate perfectly from the lab to the body, the honey base alone makes this a reasonable home remedy for a nagging cough. The warm spices, if you include them, add to that soothing effect.
Tips for a Better Batch
Use dried elderberries from a reputable herb supplier rather than foraging your own, unless you can confidently identify Sambucus nigra (European black elderberry) or Sambucus canadensis (American elderberry). Other species and plant parts, including the leaves, bark, and unripe berries, contain higher concentrations of toxic compounds.
If you want a thicker syrup, simmer the liquid a bit longer before adding honey, or increase the honey ratio slightly. Some people also stir in a splash of vegetable glycerin for extra thickness and sweetness, which is especially useful if you’re making a honey-free version for children between 1 and 2 who you’d prefer not to give large amounts of honey.
Small batches are better than large ones. Because homemade syrup has a short shelf life, making 2 to 3 cups at a time means you’ll use it while it’s fresh rather than watching half of it go to waste. If you find yourself making it regularly through the winter, keep a bag of dried elderberries in your pantry. They store well in a cool, dry place for months.