Hello. Thank you for visiting our store, we buy things in a licensed pharmacy in the European Union. Olynth 1 mg/ml contains xylometazoline, which helps constrict the blood vessels in your nose, reducing swelling in the nasal mucosa and making it easier for you to breathe. The aerosol is used for short-term treatment of nasal congestion and runny nose associated with a cold or sinusitis. Compound Xylometazoline hydrochloride (xylometazolini hydrochloridum) contains 1 mg of this substance in each milliliter of solution. Each spray of Olynth 1 mg/ml (= 0.140 ml) contains 140 micrograms (or 0.140 mg) of xylometazoline hydrochloride. Directions: Unless otherwise directed by your doctor or pharmacist, use one dose of Olynth 1 mg/mL Aerosol in each nostril up to 3 times daily for a maximum of 7 days. Do not exceed the recommended dose. Usage Unless directed otherwise by your doctor or pharmacist, use one dose of Olynth 1 mg/mL Aerosol in each nostril up to 3 times daily for a maximum of 7 days. Do not exceed the recommended dose.