As a eNT surgeon I I can tell u that Black fungus is not a side effect it’s a new infection which is due to lowered immunity.
Since sinus is the first symptoms of black fungus I will advise u to consult with detail history and pictures of ur face.
U can use these products these have no such side effects like black fungus.
Next Steps
For further clarification, complete evaluation, correct diagnosis and treatment and prescription feel free to consult me on this PRACTO APP. Stay safe and take care of yourself