<p>Like all medicines, Ferrous Fumarate Tablets can sometimes cause side effects, although not everybody gets them. They might be:</p>

<ul>
	<li>Heartburn</li>
	<li>Feeling sick or being sick</li>
	<li>Diarrhoea or constipation.</li>
</ul>

<p>Also, you might find your stools are darker in color after you have taken this medicine. This is quite commonly seen with all iron preparations and is normal.</p>