Greetings.
It has an active ingredient called isotretinoin. This is one of the best medication for acne and that is the reason your dermatologist has suggested you the same. It is very occasional to see severe burn on isotretinoin. Your dermatologist may reduce the dose of tretiva or suggest some medication to improve the ongoing burning
Next Steps
You should definitely consider your treatment under the guidance of an expert qualified dermatologist
Health Tips
You can consult me online for personal recommendations