My mom with moderate Alzheimer’s seemed to be a lot more relaxed once the Dr said to put her on seroquel in the morning and at night.

Definitely discuss with her doctor. Seroquel helped my parents and was the key to their settling down.

Their meds are/were ground up and mixed with pudding or some other very sweet treat to mask the taste.

In my humble opinion as an old retired RN, it would be unlikely that your mother is aware that "buzzing in the ears" is a listed side effect of this drug.

Were she aware, then such a symptom could arise not simply "made up" but subconsciously thought about so much that it simply manifests to her.

Dizziness is also common, and of course, one of the side effects from these drugs that can so profoundly "help" is that they can impede or diminish mobility.

Again, as you are doing, this is for you and your mom's medical team to discuss and decide upon further try with this medication. Some early symptoms do disappear with a bit of time; meanwhile she is at more risk of falling.

Wishing you luck.

If you read the side effects that Seroquel can produce, dizziness is one of them. Ringing in the ears can be a sign of elevated blood pressure. You need to discuss these symptoms with her doctor.