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Could iron tablets be making me poorly??

60 replies

Biskitteef · 19/02/2026 20:52

I suffer with chronic anaemia (lowest point was a ferritin of 3). They always prescribed me iron tablets which I’d take sparingly but often forget and sometimes just gave up on.

Then my hair started falling out so I decided to take the newly prescribed iron tablets more seriously, religiously taking them every single night.

Now - these ones are a different brand (still ferrous fumerate but the box looks very different). Then have an awful weird taste, with the old ones I got a slight metallic taste from them but these have a strong weird chemical taste to them.

For the past few weeks I have suffered with a constantly bloated stomach, wind and mild abdominal pain. Everytime I eat, my stomach bloats up and starts hurting. Could it be the iron tablets causing this?? I have a dr appointment next Friday but tempted to stop taking them until the appointment?

OP posts:
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StarlightLady · 19/05/2026 07:14

Try “Gentle Iron” as opposed to the standard tablets.

mx22 · 19/05/2026 07:07

@SuperJunehiya! I’ve just started these iron supplements! How long until you noticed a difference within yourself

Justhereforhealthtopic · 05/03/2026 16:10

RabbitFurCoat · 21/02/2026 14:56

I take ferrous fumarate every 48h to maintain levels (it doesn't upset my stomach, lots of medications massively affect me but I dodged the iron bullet!) and it's 215mg per tablet. 20 or 25 is going to do v little for OP.

It’s worth noting that the ferrous fumarate amount is not the elemental iron amount. The iron in 215mg ferrous fumarate is apparently around 70mg of elemental iron. The active iron advance is elemental iron, so at 25mg still too low for OP or yourself but not as much lower as I originally thought. The betteryou mouth spray is elemental iron as well, but that’s any even lower dose still, but both claim to be better absorbed than other iron supplements (don’t know if that’s really the case or not).

DrNo007 · 21/02/2026 17:54

Common reaction to iron supplements. I was recommended to take Floradix Liquid Iron Formula, which I could tolerate just fine.

Needlenardlenoo · 21/02/2026 17:51

Biskitteef · 21/02/2026 09:28

They want me to have mirena but I’m scared, how did you find it?

It's been fine and solved the problem. I have always had a gynaecologist do it though as I don't trust the GP!

BeKhakiReader · 21/02/2026 17:38

I know this isn’t an option for everyone, but I paid for an iron infusion when my ferritin was in the low teens. Whacked it up to over 200 and I’ve not needed to supplement again now in about 2 years.

igelkott2026 · 21/02/2026 16:11

I used to take Spatone but it wasn't enough to make my iron levels high enough to give blood, so I think it's too gentle too.

I take soluble iron (gluconate) tablets in a glass of water but I have been wondering if they have been irritating my GI system as well. I don't take them every day.

Daygloboo · 21/02/2026 16:02

Daygloboo · 21/02/2026 16:01

They can cause constipation. Get them changed.

Also, maybe increase your fibre so you dont get constipated.

Daygloboo · 21/02/2026 16:01

Biskitteef · 19/02/2026 20:52

I suffer with chronic anaemia (lowest point was a ferritin of 3). They always prescribed me iron tablets which I’d take sparingly but often forget and sometimes just gave up on.

Then my hair started falling out so I decided to take the newly prescribed iron tablets more seriously, religiously taking them every single night.

Now - these ones are a different brand (still ferrous fumerate but the box looks very different). Then have an awful weird taste, with the old ones I got a slight metallic taste from them but these have a strong weird chemical taste to them.

For the past few weeks I have suffered with a constantly bloated stomach, wind and mild abdominal pain. Everytime I eat, my stomach bloats up and starts hurting. Could it be the iron tablets causing this?? I have a dr appointment next Friday but tempted to stop taking them until the appointment?

They can cause constipation. Get them changed.

RabbitFurCoat · 21/02/2026 14:58

Though I am no expert - just a person who has been anaemic! Wondering whether anyone else got v anxious while anaemic, I had to stand up on a tram once before my levels had returned to normal and I thought I would have a panic attack because I needed to sit down and couldn't. I am a public transport veteran, never normally bugs me to be stood up at all - and I had my husband with me! Such a uniquely awful feeling.

RabbitFurCoat · 21/02/2026 14:56

Justhereforhealthtopic · 21/02/2026 00:52

I was looking for one just recently that is gentle on the stomach and came across Active iron advanced. It seems to come in both 20mg or 25mg doses, so don’t know if that’s strong enough, but claims it’s more easily absorbed than most, so as effective as higher doses of other iron supplements, and also much less likely to cause stomach discomfort or constipation. I’ve been using it for almost a week and so has a family member who has problems with tummy and constipation as it is. I haven’t noticed any problems for my family member and I haven’t had any myself so far.

I take ferrous fumarate every 48h to maintain levels (it doesn't upset my stomach, lots of medications massively affect me but I dodged the iron bullet!) and it's 215mg per tablet. 20 or 25 is going to do v little for OP.

Monvelo · 21/02/2026 11:27

Merina has been perfect for me. I've had it 8 years with no bleeding at all.

BeKhakiReader · 21/02/2026 11:17

RabbitFurCoat · 19/02/2026 21:55

Ask your doc whether they know about taking it every other day to aid absorption. I maintain my levels doing this with one tab every other day. You may find it less irritating if you do it every other day instead. Research on absorption: https://pubmed.ncbi.nlm.nih.gov/31413088/

I came on to say this as well. My GP actually told me to take them every other day as they would work better.

The amount of iron in things like Spatone might keep people topped up, but is nowhere near enough iron to correct such a deficiency. I was told this at the iron clinic.

Biskitteef · 21/02/2026 09:28

Needlenardlenoo · 21/02/2026 08:59

They actually make them now with orange in, so even easier. I double dosed for a while, but as pp said the reason for the anaemia also needs addressing.

My iron didn't normalise till I got a Mirena.

Edited

They want me to have mirena but I’m scared, how did you find it?

OP posts:
Needlenardlenoo · 21/02/2026 08:59

endofthelinefinally · 21/02/2026 01:01

I agree with this. Spatone isn't a very high dose, but when my dd was anaemic I used a double dose and put the sachet contents into a glass of fresh orange juice. Altermatively take it with vitamin c tablets.
No tea or coffee within 2 hours and you can boost absorption by 4 times.
No side effects and it works.
So many people don't take iron supplements properly.

They actually make them now with orange in, so even easier. I double dosed for a while, but as pp said the reason for the anaemia also needs addressing.

My iron didn't normalise till I got a Mirena.

NotMeAtAll · 21/02/2026 03:06

I can't tolerate iron tablets that I've tried. My iron is that low now, but I found infusions amazing.

CloseEncountersOfTheLoveKind · 21/02/2026 02:47

I know it’s dodgy to make comparisons, but a sibling had a ferritin of 5.

An immediate appointment was made so that they had an iron infusion.

it took about an hour to complete, and sibling felt some benefit even the next day, but was advised that the full benefits would unfold over about six weeks.

I hope this info helps you.

Caerulea · 21/02/2026 01:06

I hope you check back here, OP.

Put your foot down with the Dr & tell you you can't & truly do not want to take the tablets & want to look at an infusion. It will take so long to get your levels up to anything substantial on the tablets. It varies across the country as to who they are offered to (which is appaling imo) but anything below 9 should be considered per NICE guidelines.

They should also be looking at why your levels are so low - cos they are! You must feel like shit & have forgotten what normal is like. My final straw (after hair falling out, having to move slowly in case my vision went & so on) was nearly slicing my finger off at work cos my co-ordination was absolutely borked - I was at risk of seriously hurting myself cos I work alone.

Really pin your gp down about infusions

endofthelinefinally · 21/02/2026 01:01

Needlenardlenoo · 20/02/2026 10:28

God yes - ew - iron tablets often feel like the cure's worse than the disease!

Spatone packets are good as an alternative. You can get them in Boots.

I agree with this. Spatone isn't a very high dose, but when my dd was anaemic I used a double dose and put the sachet contents into a glass of fresh orange juice. Altermatively take it with vitamin c tablets.
No tea or coffee within 2 hours and you can boost absorption by 4 times.
No side effects and it works.
So many people don't take iron supplements properly.

Justhereforhealthtopic · 21/02/2026 00:52

I was looking for one just recently that is gentle on the stomach and came across Active iron advanced. It seems to come in both 20mg or 25mg doses, so don’t know if that’s strong enough, but claims it’s more easily absorbed than most, so as effective as higher doses of other iron supplements, and also much less likely to cause stomach discomfort or constipation. I’ve been using it for almost a week and so has a family member who has problems with tummy and constipation as it is. I haven’t noticed any problems for my family member and I haven’t had any myself so far.

Needlenardlenoo · 20/02/2026 10:28

God yes - ew - iron tablets often feel like the cure's worse than the disease!

Spatone packets are good as an alternative. You can get them in Boots.

Sartre · 20/02/2026 10:16

Yes and it’s very common. I had anaemia in all of my pregnancies and when they tried to give me the tablets, I refused. I took them the first time and they made me so constipated, I was in agony. I took spatone instead, little sachets of liquid iron from Holland&Barrett. Much more gentle.

TeenLifeMum · 20/02/2026 10:11

I spoke to the pharmacist and they advised changing to ferrous gluconate - which is better but not great. I still get digestion issues. I’m pushing for an iron infusion.

trainedopossum · 20/02/2026 10:09

My mum is frequently anaemic and her GP said to take the tablets every other day to aid absorption. Something in your body kicks in to avoid getting too much iron when you take them daily.
It might not solve the problem but in addition to helping use the iron better it would give your stomach a night off in between doses.
Hope you feel better soon, it’s such a drag.

popcornandpotatoes · 20/02/2026 10:07

Iron supplements are known to cause digestive distress but if you're hair is falling out due to anaemia I wouldn't just stop due to the stomach upset.