Why Do Some Iron Supplements Turn My Stool Black? | Exercise.com Learn: Your Fitness Business Resource

Why Do Some Iron Supplements Turn My Stool Black?

Tyler Spraul is the director of UX and the head trainer for Exercise.com. He has his Bachelor of Science degree in pre-medicine and is an NSCA-certified strength and conditioning specialist. He is a former All-American soccer player and still coaches soccer today. In his free time, he enjoys reading, learning, and living the dad life. He has been featured in Shape, Healthline, HuffPost, Women's...

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UPDATED: Aug 25, 2020

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  • Iron supplements can cause some uncomfortable side effects.
  • Your stool may become black, but the effect is actually harmless.
  • Most doctors recommend taking iron supplements right before a meal to avoid side effects

While iron supplements are safe to consume, they can have some side effects. This can be disconcerting for those who have never supplemented with iron before.

Knowing the possible side effects and potential risks before taking any new supplement can be beneficial and help you decide whether or not you want to use a product.

Iron is also great for those suffering from anemia and can help eliminate symptoms that are caused by anemia. According to the American Society of Hematology, taking iron supplements can help restore your iron and hemoglobin levels.

When you supplement iron correcltly, it can provide benefits. Along with a solid supplementation routine, you need a solid workout routine. Get more out of your workouts and supplement routine by going PRO. Contact us today to learn more!

What Are the Side Effects of Iron Supplements?

While iron supplements are fairly safe to incorporate in your diet, they can cause some uncomfortable side effects.

With iron supplements, the side effects do not generally pose any health risks. Abdominal discomfort is the biggest side effect and can result in diarrhea or constipation.

Additionally, your stool may become black. While this may seem unsafe or like a symptom of illness, the effect is actually harmless.

The liquid form of iron supplements can cause discoloration of the teeth. This can be prevented by simply using a straw to drink the liquid form of the supplement.

There are ways to decrease side effects. Those who take their supplements alongside food have reduced problems.

There are some iron treatments that can have more adverse effects than supplementation.

Iron sulfate is another possible treatment for iron deficiency. This tends to have fewer adverse side effects than other iron treatments or supplements.

How Can You Ease the Side Effects of Iron Supplements?

To prevent digestion side effects it is wise to take iron supplements with food but to also chase the supplement with a glass of juice that is high in vitamin C. This will help aid the iron supplements absorption into the bloodstream.

Vitamin C is essential in iron absorption so increasing your intake of it alongside supplementing with iron can be helpful.

For those who have constipation, a stool softener or laxative can ease the uncomfortable side effect. It’s important to ask a doctor which stool softener or laxative is safe to use beforehand.

It’s also wise to consider cutting the recommended dosage in half if you are suffering from an upset stomach. As your body becomes used to the additional influx of iron, you can increase the dosage to the recommended amount.

Absorption is the key to iron supplementation. However, in order to absorb your supplement, taking it an hour before a meal is beneficial. Most doctors will recommend taking iron supplements right before a meal if you suffer from any side effects.

It’s also important to stay away from those products that inhibit iron absorption when taking a supplement. Caffeine, milk and calcium supplements can prevent iron supplements from being properly absorbed. Foods that contain tannins, like tea, can also reduce the absorption of iron supplements.

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What Are the Types of Iron Supplements out There on the Market?

There are two common forms of iron supplements. Ferrous form or ferric form of iron are the two common types. The supplement that is the easiest for the body to absorb is ferrous iron.

Pills that contain iron are usually in ferrous form. There are three subcategories of ferrous iron that are sold on the market today: ferrous fumarate, ferrous gluconate, and ferrous sulfate.

When choosing any of these iron supplements it’s important to look at the elemental iron in each individual serving. Most iron supplements in the ferrous form are sold as a pill. Iron supplements are also available in capsules, drops, and liquids, coated and extended-release capsules.

Tablets and pills are better absorbed and cheaper as well. For adults who have trouble swallowing the pill form and also for children, the liquid form of iron supplements can be useful.

Coated tablets or extended-release capsules have fewer and less severe side effects. However, this form of iron supplement is not absorbed as well in the bloodstream.

Ascorbic acid or vitamin C can help iron be absorbed better. Iron acts better in an acidic/low pH environment.

Iron supplements are great to incorporate in your diet if you are deficient of this important mineral.

Frequently Asked Questions (FAQ)

Do I have to take supplements?

Unless your doctor has instructed you to take certain supplements, you do not have to take them.

Are supplements safe?

Whether or not supplements are safe to take depends on a number of factors. Learn more about the safety of supplements here.

What supplements do I need to take?

No one can answer that aside from your doctor. To learn more about the various supplements that doctors commonly recommend, check out this article.

Always check with your physician before starting a supplement routine, and remember that not all supplements are the same. Buy from a reputable company and read the reviews before committing to a specific brand. In the meantime, go PRO with Exercise.com and get more out of your workouts.

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