Synthroid and Lescol possible drug interactions

My 76-year old mother is taking 150 mg of Synthroid and 20 mg of Lescol per day.  Some medical references indicate that Lescol should not be taken if you have thyroid problems.

I'm concerned that these drugs may be contributing to problems that a cause has not been able to be identified, after two and a half years of various tests by different doctors.  She frequently falls with no prior warning.  She is listless, often seems mentally confused, and sometimes has slurred speech.  She needs assistance in walking (even very short distances) and we now have someone with her in her home 24 hours a day.

Additional medication that she is taking once per day includes Enablex (7.5 MG), Norvasc (10 MG), low strength aspirin (81 MG), and Amitriptyline HCL (25 MG).  She also takes Naproxen (500 MG, 2 times per day), I-Caps MV eye vitamins and minerals supplement/lutein-enriched multi-vitamin (2 times per day), uses Systance (lubricant eye drops 4 times a day, and Terbin (2% IBUPRO/2% DMSO), a toe nail ointment for infection two times per day.  

In reading about others who have had adverse side effects as a result of medications to reduce cholesterol, I'm greatly concerned about my mother's condition.

Could the Lescol be causing these problems, especially since she also takes Synthroid and is also being treated for high blood pressure with Norvasc?  Any advice, or sources of additional information, will be greatly appreciated.

Thanks, Delphy

[GravesLady]

When in doubt and to be safe, have her take the synthroid and other drugs and/or supplements hours apart.  Example it is best to take Synthroid  same time each day and in the morning to prevent insomnia at night, (and 1/2 hour to 1 hour before eating). Then take Lescol at bed time.  Or if lescol is taken twice a day then first pill  8 hours after synthroid and then at bed time, or spilt the two lescol doses to her convenience.  Same with aspirin and/or any other drugs or supplements.  
I did not see synthroid as a possible drug interaction to lescol.  However, it is  important to check with her doctor to make sure, and before combining Lescol with any drugs and/or supplements.

Good Luck!