Efracea may cause side effects such as back pain, muscle and joint pain. The occurrence of side effects of the drug can affect muscle strength and endurance. Patients with myasthenia gravis (with excessive muscle fatigue) are at risk of worsening.

Just because these side effects have been reported does not mean that every patient will experience them. We wrote about whether to be afraid of adverse drug reactions in the article:

https://www.gdziepolek.pl/artykuly/czy-bac-sie-dzialan-niepozadanych-lekow

Some patients using the drug to treat m.in Lyme disease may experience a so-called Jarisch-Herxheimer reaction, causing fever, chills, headaches, muscle aches and skin rashes. The occurrence of the above reaction should be consulted with a doctor, but it is usually self-limiting. If necessary, you can also use a teleconsultation in such a case, e.g. via the Gdziepolek.pl portal:

https://www.gdziepolek.pl/telekonsultacja

If you experience adverse reactions, I encourage you to report them. Reporting side effects allows you to increase control over medicines available on the market. We wrote more about how and why to report side effects in the article:

https://www.gdziepolek.pl/artykuly/jak-i-dlaczego-zglaszac-dzialania-niepozadane