Because of its vitalizing, anti-inflammatory and antibacterial effects, propolis strengthens the human immune system when ingested. For more information, see our blog about propolis. Content: 20ml application Röösli's propolis solutions come in a glass bottle (20ml) and must be emptied with drops. It is recommended to dilute and take approximately 20 drops per day in a glass of water. It should be noted that the propolis solution may leave brown stains on the skin or glass. Because of its better tolerability, the water-based propolis solution is increasingly being used in children and animals.