can phenobarbital affect the kidneys
If used during breastfeeding it may result in drowsiness in the baby. A lower dose is recommended in those with poor liver or kidney function, as well as elderly people. Phenobarbital is a barbiturate that works by increasing the activity of the inhibitory neurotransmitter GABA. Phenobarbital was discovered in 1912 and is the oldest still commonly used anti-seizure medication.