Ferrous sulfate and Upset Stomach: What Users Say

• Lul...
• August 7, 2015

For Iron Deficiency Anemia "After being terrified of blood tests for years, I finally had one after my fainting got worse and I thought it'd be smart to check it out. I always knew it'd be lack of iron because I'm not a fan of the foods that contain iron. I've been taking the ferrous sulfate for nearly 2 months now and although I feel so much more energetic and no longer get tired at the top of the stairs or faint, I often get awful stomach cramps of which I expect is due to the constipation. But I can only describe them as being a whole lot worse than period pains and also a huge lack in appetite. I'm already underweight and I worry I'll get further complications due to not eating other types of food, but all in all the pills have made me feel so much more energized."

• Too...
• Taken for less than 1 month
• September 19, 2017

For Iron Deficiency Anemia "I was prescribed to take 300 mg a day, along with stool softeners because this product is known to cause constipation. Thankfully I waited to take the stool softeners because I have been taking this medication for 6 days and have been glued to the toilet for 2 of them. I haven't noticed any positive effects from this medication. A full list of my side effects so far has been: feeling like I'm going to throw up, my stomach gurgling a lot, painful gas, and very strong diarrhea (very watery about 4 times in the morning then 5/6 during the daytime)."

• Anonymous
• November 28, 2010

For Iron Deficiency Anemia "This form of iron gives me massive, cluster-like headaches. I switched to an iron gluconate time-release dose and have no headaches, but do have some minor stomach upset and constipation. Those I can live with!"

• Sha...
• Taken for 1 to 6 months
• June 2, 2020

For Iron Deficiency Anemia "I've been taking this for three months now. I no longer feel weak in my chest, and I feel I'm getting enough oxygen. Which is great, but my digestive system is so off, and I have regular nausea, stomach ache, and mild constipation. It's making me miserable, as there's nothing worse than nausea."

• Fee...
• Taken for 1 to 6 months
• April 12, 2018

Ferrous sulfate "I have been suffering with very heavy periods for quite some time and was beginning to feel really weak. After reviewing my blood work results, my doctor recommended iron and prescribed FeroSul. Insurance did not cover the prescription, but that's okay as it was super cheap as a cash payment at my local pharmacy. FeroSul has been great at preventing full-blown anemia for me. (Which I've experienced before.) I have no problems in taking it. No stomach upset of any sort. I always take it with my lunch each day. I am happy with the results. I no longer feel so weak and tired."

• Jen...
• Taken for less than 1 month
• November 24, 2020

For Iron Deficiency Anemia "I've only been taking this for about 3 days, and it's been a 3-day pure gastrointestinal nightmare. Stomach ache, bloating, nausea, and the gas! The gas is out of control, and I'm surprised my family still wants to be around me. I am definitely gonna switch to a non-sulfate version."