I have been on MAC treatment for about 20 months now, but they have had to change my drugs a few times due to side effects. My worst experience was with Tygecil. I was only on it for about three months. Initially, it caused nausea which made it difficult to eat. Over a longer period, it caused severe constipation and pancreatitis. I ended up in the hospital in quite a bit of pain. I also ended up losing 20 pounds, which I have mostly gained back now almost a year later. Although the drug seemed effective on my infection, it wasn't worth the side effects. I would never use this drug again.
The other drug I've had problems with is Amakacin. The IV form caused ringing in my ears and damage to my hearing. If you are on this drug, I would recommend you go for monthly hearing tests. The damage done to my hearing is in my upper registers and doesn't effect my day-to-day life. However, I've heard it can progress quickly from there.
I am now on inhaled Amakacin. Although it's not as effective, the side effects are much lower.
I started oral Clofazimine at the beginning of this year. My skin is now orange/tan looking. I often get asked where I've travelled to to get such a tan. However, the colouring rubs off on my clothing, sheets and towels (and doesn't wash out). I consider this minor compared to my other side effects.
I've been on IV Cefoxitin for the entire run. It doesn't seem to cause me problems.
I have also taken Cipro and Zithromax for years. As far as I know, these do not give me any problems.
During a prior round of treatment, I was on oral Linezolid. After about nine months, it cause numbness in my feet and lower legs. This took a long time to go away, but isn't really an issue anymore.
I think side effects vary considerably from person to person. However, it's good to know the side effects for the medications you are on and keep an eye out for them. I always ask the doctor about any symptoms that I think may be side effects. My clinic has a dedicated pharmacist who will look into side effects for combinations of medications.
Good luck with your treatment. I hope it's successful (and shorter than mine).