Talk to Cardiologist on Strange Heart Problem

AoA, my mother is having left arm pain for last 5, 6 days. Yesterday, did Eco, ecg etc. Dr said it's normal. BP was 155 something.

But today after taking moxifloxacin, she experienced strange feelings. Pain in tummy, she had to use washroom, and she felt as if hands and feet are getting numb. Nausea or dizziness was not there.

I gave her mango shake. Later when she got better. She urinated 5, 6 times. Did not take any medicine during this time. What was it. Plz I am worried