Is dark urine only a sign of dehydrated kidneys or could it be a sign of liver toxicity? have been taking more muscle relaxers than usual & worried.

Likely from: Dehydration or medication and not from liver toxicity - which is uncommon and will present with nausea, vomiting, jaundice, fatigue etc. Drink lots of water and follow up with ur dr. Take care and god bless u! http://m.Healthline.Com/symptom/dark-urine.

Dark urine could be: A sign of many possible y defying conditions. It seems as if you need to have some basic blood work to check liver and kidney function first. Also you may want to ease up on the muscle relaxers and try physical therapy.