Hi.
Thanks for your query.
Read the history about a 22 year old male who's stool have become greenish black, abusing
Amphetamine Sulfate for the last month for study purpose, have
stress, takes multivitamins, and anti-oxidant supplements, melatomin but nothing that contains Iron, stools are not tarry, smell a lot, wants to know how serious is this?
Taking Amphetamine in such a high dosages is definitely the most dangerous thing that you are doing.
The greenish
black stool can be due to infection, faster motility causing the bile to appear or there may be associated bleeding somewhere in the intestinal tract.
I would advise you the following:
Get the stool tested for three consecutive days,
Tests of blood for CBC, sugar, liver and kidney function.
Ultrasonography of the abdomen.
Appropriate antibiotic,
metronidazole and other symptomatic medicines to get a proper relief and possible cure. Take soft bland diet.