Could the use of Bioxetin and Baclofen in one day have caused the appearance of tinnitus?

According to current medical literature, there should be no adverse interactions between these preparations that are harmful to health or the effects of drugs. Therefore, it seems unlikely that the use of Baclofen and Bioxetin in one day will have an impact on the deterioration of your health. You have not written how long you have been using Bioxetin. According to the Summary of Product Characteristics, the response to treatment during Bioxetin therapy is usually observed after 2-4 weeks of therapy. During this initial period of treatment, side effects may appear. However, most of them are mild to moderate in severity and in most cases resolve as treatment continues. I enclose a description of the preparation that you take: https://www.gdziepolek.pl/produkty/12093/bioxetin-tabletki/ulotka/21987 When it comes to the causes of tinnitus, they have a different background. Environmental factors as well as disease processes may be responsible for their appearance. Tinnitus can be caused by exposure to noise (especially impulse noise). They can be a consequence of exposure to severe stress or taking certain drugs (e.g. salicylates, aminoglycoside antibiotics, quinine, platinum-based anti-cancer agents). It is difficult to propose a specific method of treatment based on such a short description. Therefore, I encourage you to make an appointment with the attending physician, who will adjust the treatment according to your current clinical condition. I also encourage you to read the article: https://www.gdziepolek.pl/artykuly/jak-pozbyc-sie-szumow-usznych