NC for this so it's not linked to my usual name
Short version
Choice A - continue on medication with awful side effects
Choice B - come off medication and have chest infection/tonsillitis/UTI monthly and higher covid risk
It's a great choice 
Medication is every 10-14 days. Headache, severe shivering/sweating, fever, flu symptoms, bone pain, started to feel sick before taking it as I know what's coming. Nothing helps, I've tried antihistamines, CBD, naproxen, codeine, paracetamol...
The headache and shivering/flu symptoms last 12hrs, the bone pain 24hrs
I can take it and ruin my weekend or risk being off work sick
Consultant can't offer any alternatives except one which is the same drug (tried it, no difference). Advised to be on it for life