Yes, the suppliment that you are taking can make one have black/tarry stools.
It is indeed from the iron...prescribed since your doctor is suspecting anemia.
It can also exacerbate constipation, so also take with and abundance of water and and healthy foods.
No need to worry...this is expected with the Ferrous.
Do keep checking back with your doctor though...and consider making that appointment with the speicalist, so that you can get all the answers that you need.
"Courage is not the abscence of fear, it is feeling afraid and doing it anyway!"
"Worrying does not empty tomorrow of its troubles...it empties today of its strength."
Corrie Ten Boom
Panic Syndrome recovery due to CBT
Post Edited (Scaredy Cat) : 3/12/2014 10:49:55 PM (GMT-6)