Natural home remedies have been used for generations to support common symptoms like cough, congestion, and seasonal immunity drops. One of the most talked-about traditional remedies is the purple onion syrup, often passed down in families as a simple, kitchen-made cough support drink.
While it is not a cure for diseases, many people use it as a soothing natural aid during colds and respiratory discomfort.
Let’s explore the recipe, how it’s believed to work, and what science says.
Why Purple Onions Are Used in Traditional Remedies
Purple onions (a type of Onion) contain natural compounds such as:
- Quercetin (a plant antioxidant)
- Sulfur compounds
- Natural antibacterial properties (in laboratory studies)
Because of these properties, onions have long been used in folk remedies for:
- Cough relief
- Mucus loosening
- Immune support

Purple Onion Remedy Recipe (Homemade Syrup)
Ingredients:
- 1 large purple onion
- 2–3 tablespoons of honey
- Optional: 1 teaspoon lemon juice
- Clean glass jar with lid
How to Prepare It (Step-by-Step)
Step 1: Slice the onion
- Peel the purple onion
- Slice it into thin rings or small pieces
Step 2: Layer with honey
- Place onion slices in a clean jar
- Pour honey over the layers until fully covered
Step 3: Let it rest
- Close the jar tightly
- Leave it for 6–12 hours (overnight is best)
- The onion will release a natural syrup
Step 4: Use the syrup
- Take 1 teaspoon, 2–3 times a day
- For cough or throat irritation, take slowly
How This Remedy Is Believed to Help
This traditional mixture is used for:
1. Cough relief
The syrup may soothe throat irritation and reduce coughing reflex.
2. Respiratory comfort
Onion vapors and compounds may help loosen mucus in some people.
3. Immune support
Honey and onions both contain antioxidants that support general wellness.
What Science Actually Says
There is limited clinical research on onion syrup specifically. However:
- Onion compounds show antioxidant activity in studies
- Honey is known to soothe sore throats in medical use
- Warm natural liquids can ease respiratory discomfort
But important reality:
This is a traditional remedy, not a medically proven treatment for infections or lung diseases.