The polynucleotides are highly purified and then sterilized from an authorized source, production is regulated, and manufacturing meets the required CE safety standards. All protein molecules are removed, so there is no risk of allergy. Science is based on evidence and there are multiple scientific articles published that demonstrate safety and efficacy in medicine for the treatment of tissue injuries and also in aesthetic medicine. The risks associated with injecting exogenous (not own) polynucleotides are unknown. Your doctor will explain the temporary side effects you may experience.
Avoid international travel for 2 weeks after treatment. Prolonged air pressure in the cabin can lead to unpredictable swelling and bruising.