Hello and Welcome to ‘Ask A Doctor’ service.
I have reviewed your query and here is my advice.
When taken together with Moexipril, the 'water pill' Lasix may produce an additive effect on lowering the blood pressure and this results in
dizziness,
fainting, fast or irregular heartbeats, and headache.
While taking Lasix and Coreg together may also lower the blood pressure and slow the
heart rate resulting in dizziness, weakness, fainting, fast or irregular heartbeats, and
fatigue.
Your mother needs a dose adjustment or special tests to safely take these medications together. Contact her doctor if she gets reduced heart rate, dizziness, fainting, or
headaches.
Hope I have answered your query. Let me know if I can assist you further.
Regards,
Dr. Mohammed Taher Ali