3 doctors weighed in:
What are the usual side effects of ferrous sulfate?
3 doctors weighed in

Dr. Andrew Pacholyk
Holistic Medicine
2 doctors agree
In brief: Constipation
Mild side effects can include constipation; darkened or green stools; diarrhea; nausea; stomach upset.
. More severe side effects can include headache, allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); black, tarry stools; blood or streaks of blood in the stool; fever; vomiting with continuing sharp stomach pain.

In brief: Constipation
Mild side effects can include constipation; darkened or green stools; diarrhea; nausea; stomach upset.
. More severe side effects can include headache, allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); black, tarry stools; blood or streaks of blood in the stool; fever; vomiting with continuing sharp stomach pain.
Dr. Andrew Pacholyk
Dr. Andrew Pacholyk
Thank
Get help from a real doctor now
Dr. William Forsythe
Board Certified,
23 years in practice
171K people helped
Continue
107,000 doctors available
Read more answers from doctors