How to manage the side effects of MAC lung disease meds at 68?

Question

Hello doctor,

I am 68 and was diagnosed with MAC lung disease 10 months ago after having a persistent productive cough, progressive fatigue, and unexplained weight loss for over 18 months. The three-drug antibiotic combination of Azithromycin, Ethambutol, and Rifampin is causing absolutely devastating side effects that make me seriously question whether continuing treatment is worth the suffering.

I am experiencing severe, constant nausea that makes eating nearly impossible, progressive vision changes, including blurriness and color distortion that terrifies me about permanent eye damage, and my urine is bright orange, which frightens me every single day. The medications must be taken for at least 12 to 18 months, but I have already lost 28 pounds because food makes me feel so violently sick that I can barely keep anything down or maintain proper nutrition.

My liver function tests are showing concerning abnormalities, and my doctor keeps ordering frequent blood work to monitor for serious hepatotoxicity and other organ damage. The crushing fatigue is actually significantly worse now than before treatment started, and I can barely function at my part-time job. My chest CT scans after 10 months of therapy still show persistent active infection with minimal improvement, which is incredibly discouraging and makes me wonder if this aggressive treatment is even working effectively.

Some days, I seriously consider stopping all medications entirely because the side effects are making my remaining quality of life absolutely miserable and unbearable. Are there alternative antibiotic regimens with fewer severe side effects or newer experimental treatments that might be easier to tolerate for elderly patients? I genuinely want to beat this chronic infection, but I desperately need to be able to live somewhat normally during the lengthy treatment process.

Please advise.

Thank you.

Answer 1

Hello,

Welcome to icliniq.com.

I hear how hard this has been, and I am really glad you told me everything so plainly.

MAC (Mycobacterium avium complex) lung disease is a marathon, not a sprint, and the standard three-drug plan (Azithromycin, Ethambutol, Rifampin) can be brutal. The goal is to cure the infection without breaking you in the process. When side effects are this severe, it is a signal to rethink the regimen, not to suffer through it unchanged.

Two immediate safety issues need attention.

New blurring and color changes can be Ethambutol optic neuropathy; the right response is urgent ophthalmology review, and vision can recover when the drug is stopped early.
The bright orange urine is from Rifampin and is usually harmless, but your abnormal liver tests matter; short, supervised interruptions or dose changes are appropriate when hepatotoxicity is suspected.

Please do not stop everything on your own; doing so risks drug resistance and makes MAC much harder to treat later.

A big question is how we measure “progress.” CT (computed tomography) scans often lag behind how you feel and, crucially, behind your sputum culture status. Success is defined by sustained culture conversion (typically three monthly negative cultures in a row) and then continuing therapy 12 months beyond the first negative. If your cultures have not converted after roughly six months of well-taken therapy, we classify the disease as “refractory” and change the approach rather than pushing the same plan indefinitely.

There are several evidence-based ways to make treatment more livable. According to CT reports, many patients are switched to and tolerate thrice-weekly (intermittent) dosing of the core drugs instead of daily dosing, with comparable outcomes and far fewer side effects.

If certain drugs become intolerable due to side effects, your treatment does not have to stop. The regimen can be safely restructured by substituting better-tolerated alternatives, such as replacing Ethambutol, switching Rifampin to Rifabutin, or adding Clofazimine or inhaled Amikacin, under the guidance.

Please also prioritize the eye appointment now. Ethambutol-related optic neuropathy is a “do not wait” problem. I want you to know there are gentler paths forward. Adjusting the dosage or switching the drugs will improve tolerability and outcomes.

You have already won most of the battle by staying in the fight for ten months; now, let us adjust the strategy so you can feel that victory in your day-to-day life, not just on a report. I really tried my best to understand your problem and give you advice. I really believe you can beat this MAC.

Best wishes.

Thank you.