Hello and welcome to HCM.
Thank you for your query.
The possible causes of dark or tea-colored urine are:
-Medications (anti-malarial, antibiotics, laxatives, muscle relaxants, etc.)
-Diet (beans, etc.)
-Infections (urinary tract
infections can cause darkening of urine)
Please consult a doctor at the earliest. If you are not diagnosed with any of the above conditions and are not on any medications, this is not normal.
I hope I have succeeded in providing the information you were looking for. Please feel free to write back to me for any further clarifications. I would gladly help you.