Bariatric vitamins · 4 min read

Bariatric Multivitamin Without Iron vs With Iron: How the Two Differ

By Shiny Leaf Team · October 23, 2026

Two bottles, one capsule a day, almost the same label. The difference comes down to one line: iron. If you've been comparing our bariatric multivitamin with iron and the iron-free version, this is the side-by-side we wish every brand published.

Quick note before we start: this post explains how the two products differ. Which one is right for you is a question for your bariatric team.

One beige vegetable capsule on a white linen napkin beside a glass of water

What's the same in both?

More than you'd think. Both are made for adults after gastric bypass (Roux-en-Y), vertical sleeve, duodenal switch or mini gastric bypass, and both keep things simple:

One capsule a day. A smooth vegetable capsule, about 0.9 inch long.
Methylated B12 and folate. B12 as methylcobalamin (1,000 mcg) and folate as 5-methyltetrahydrofolate (1,333 mcg DFE), the active forms.
The everyday essentials. Vitamin D3 (75 mcg), biotin (600 mcg), vitamins A, C, E and K, a full B-complex, zinc, selenium and more.
Made in the USA, in a GMP-certified facility.

Same capsule. Same daily habit. One line on the label is different.

So what's actually different?

One mineral. Here's the whole comparison:

At a glance	With iron	Iron free
Capsules a day	One	One
Iron	45 mg (ferrous fumarate)	None
Vitamins & minerals	22	21
B12	Methylcobalamin, 1,000 mcg	Methylcobalamin, 1,000 mcg
Folate	5-MTHF, 1,333 mcg DFE	5-MTHF, 1,333 mcg DFE
Vitamin D3	75 mcg	75 mcg
Biotin	600 mcg	600 mcg
Capsule	Vegetable, about 0.9 inch	Vegetable, about 0.9 inch
Made in	USA, GMP-certified facility	USA, GMP-certified facility

That's it. Same capsule, same daily habit, same methylated B12 and folate. The with-iron version adds 45 mg of iron (from ferrous fumarate) to the same capsule. The iron-free version leaves it out, which is why it lists 21 vitamins and minerals instead of 22.

Shiny Leaf Methylated Bariatric Multivitamin with Iron and Iron Free bottles side by side with capsules — Same capsule, same daily habit. One adds 45 mg of iron.

With iron or iron free? It all comes down to one mineral.

What does "methylated" mean on the label?

You'll see the word on the front of both bottles. It refers to the form of two B vitamins: B12 comes as methylcobalamin and folate as 5-methyltetrahydrofolate (often shortened to 5-MTHF). These are the active forms, the ones your body can use without converting them first.

Want to check for yourself? Flip to the Supplement Facts panel. The form of each nutrient is printed in parentheses right after its name, so you can see exactly what's inside before you buy. Ours are listed in full on both product pages.

Why would someone choose iron-free?

The most common reason we hear: their care team already has them on a separate iron plan, so they want a multivitamin that covers everything else without doubling up.

Others simply follow the plan their bariatric team gave them after surgery. Iron needs are personal and can change over time, so this is exactly the kind of decision your team makes with you.

Iron needs are personal. That’s a conversation for your bariatric team.

How do you decide which one to buy?

Bring these questions to your next appointment. Your bariatric team will know the answers for you:

Questions for your bariatric team

Should my daily multivitamin include iron?
Am I on a separate iron plan, and has that changed since surgery?
How and when should I take my multivitamin each day?
When should we check in on my plan again?

Once you know, the rest is easy. Our Bariatric Multivitamin Iron Free and the version with 45 mg of iron sit side by side in the bariatric multivitamin collection.

Shiny Leaf Bariatric Multivitamin Iron Free bottle next to a coffee maker, a mug and a weekly planner

How do you make it a habit?

One capsule a day is simple, and simple is what sticks. A few ideas that make it easy:

Keep the bottle where you'll see it, next to the coffee maker or your toothbrush.
Tie it to something you already do every day.
Take it the way your bariatric team told you to.
Set Subscribe & Save so a fresh bottle arrives before you run out.

One capsule, same time, every day. Simple is what sticks.

Frequently asked questions

Are the with-iron and iron-free multivitamins the same formula?

They're two different products. They share most of the label, but only the with-iron version has 45 mg of iron.

Which one should I take?

That's a question for your bariatric team. They know your history and your plan.

Can I switch from one to the other?

Talk to your bariatric team before you switch. They may want to check in first.

Are the B12 and folate methylated in both?

Yes. Both use methylcobalamin and 5-methyltetrahydrofolate.

How big is the capsule?

About 0.9 inch long, a smooth vegetable capsule. One a day.

Who shouldn't take these multivitamins?

Patients who have had lap band surgery or similar surgeries should not take them. Always follow your bariatric team's guidance.

Where are they made?

In the USA, in a GMP-certified facility.

Can I subscribe?

Yes. Subscribe & Save takes 15% off every delivery, and you can skip, pause or cancel anytime from your account.

Shiny Leaf Methylated Bariatric Multivitamin Without Iron

Shop the routineBariatric Multivitamin Iron FreeFrom $14.95 Shop now

This article is for general information only and isn’t medical advice.