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Can Vitamins Cause Heartburn?
Martin Clinic›What Dr. Martin Thinks›Vitamins and Heartburn
Digestion

Can Vitamins Cause Heartburn?

Yes, for some people. A vitamin, a fish oil capsule or magnesium can bring on heartburn, burping or a tickle in the throat, but Dr. Martin says the capsule is rarely the real problem. He reads it as a stomach that is not making enough acid, so his answer is to take your vitamins with food and work on the stomach.

Hear his answer, 1:13. Dr. Martin, from The Doctor Is In, episode 884.

Key takeaways

  • Some people get heartburn or burping from a vitamin or fish oil. Most people do not.
  • Dr. Martin says reflux usually means too little stomach acid, not too much.
  • Take your vitamins with food, and skip late-night eating if you get reflux.
  • A tickle of phlegm in your throat after a supplement can be silent reflux.
  • Low stomach acid means you absorb less B12, magnesium and minerals, even from good food.
A woman with long grey hair in a dark sweater holds her hand to her throat and looks uncomfortable, sitting by a window at home
The burn rises into the throat, but he looks for the cause in the stomach. Episode 884.

What vitamins can cause heartburn?

His listeners have named fish oil, magnesium, probiotics and a cleanse. He does not single out any one vitamin. He looks at the stomach.

A listener named Carol asked about common reflux triggers like garlic, onions, lemon and coffee. His bottom line:

Don't worry about the triggers. Fix the cause you don't have enough acidity in your stomach.

Dr. Martin, from The Doctor Is In, episode 884

He says the same about supplements: a vitamin that burns is pointing at the stomach.

Why do my vitamins give me heartburn?

Because the stomach is short of acid, he says, not overloaded.

What he says happens when the stomach runs low:

And when you don't have enough acidity, guess what happens? You get a reflux, you get the reflux coming in, either through the valve where the valve won't close properly, or you can damage that valve.

Dr. Martin, from The Doctor Is In, episode 884

He calls reflux acid in the wrong place:

If you got trouble with acid reflux, it's not because you have too much acid. You literally have acid in the wrong place, but it's not because you have too much.

Dr. Martin, from The Doctor Is In, episode 825

When acid runs low, he says, the stomach's little acid pumps work harder and some of it escapes upward. For painful reflux, read what he recommends for painful acid reflux and indigestion.

"The number one cause of acid reflux is low acidity in your stomach, not high acidity, it's low acidity."

Dr. Martin, from The Doctor Is In, episode 1188

Can fish oil give you heartburn or burping?

It can, for a few people. He says most people get no burping from it.

On the burping some people get:

Some people take DHA and they get the burping, most people don't.

Dr. Martin, from The Doctor Is In, episode 1035

A listener named Beth said coffee and DHA fish oil gave her husband heartburn. He said it was not the coffee and not the fish oil:

Rob, you got a problem with digestion.

Dr. Martin, from The Doctor Is In, episode 1106

He did not tell Rob to give up either one. Fix your stomach first, he told him, because you need your DHA: here is why he wants DHA for women over 60.

Can magnesium or probiotics cause reflux?

A listener named Susanna got a tickle in her throat from magnesium, and from probiotics too. He read it as low stomach acid.

His answer:

Well, generally, if you're getting some phlegm tickle in your throat, you got low acidity in your stomach. That's usually what it means.

Dr. Martin, from The Doctor Is In, episode 920

He told her it could be silent reflux. His focus was her stomach, not the magnesium.

How he describes silent reflux:

So you can get a silent acid reflux. I've talked about that. It's silent. You're not getting any burning, you don't feel it, but you're getting a lot of phlegm and you're coughing and you're, we call it a silent acid reflux. Very, very common.

Dr. Martin, from The Doctor Is In, episode 1092

He talks about magnesium constantly: here is why so many women over 60 run low in magnesium.

Should you take your vitamins with food?

Yes, if they upset your stomach. That is his usual answer.

To a listener named Susan, who got burping from a cleanse she was taking:

Well for you it might, it doesn't ordinarily. Take it with food. Take it with food.

Dr. Martin, from The Doctor Is In, episode 1035

On taking your supplements before you have eaten:

If you find that you might get a little regurgitation doing it, some people got a sensitive stomach or whatever, then take it with food.

Dr. Martin, from The Doctor Is In, episode 1715

And on people whose stomachs will not handle supplements alone:

And some people just find they can't take any supplements without eating and that's all right.

Dr. Martin, from The Doctor Is In, episode 577

He was answering a question about probiotics, but his point covers any supplement.

Why is heartburn worse at night?

Partly because you are lying down and not moving, he says.

On heartburn at night:

Same reason, and you're lying down. And even if you elevate yourself, I'm not against that, elevate your pillow, if that helps you, good.

Dr. Martin, from The Doctor Is In, episode 838

His rule if you have reflux:

If you have acid reflux, don't eat at night. This thing about snacking all the time is nonsense.

Dr. Martin, from The Doctor Is In, episode 920

So take an evening vitamin with supper, not with a bedtime snack.

What lowers stomach acid?

Sugar, more than anything, in his view.

His warning to anyone with a sweet tooth:

A lot of people because they're carboholics and they love their sugar, there's nothing that will destroy the acidity in your stomach like sugar does. Sugar destroys your acidity.

Dr. Martin, from The Doctor Is In, episode 747

He wants the stomach strongly acidic, because that acid breaks down your food. The same acid mix-up is part of why digestion slows down after 60.

"Your acidity in your stomach is on your side. Do you understand that? It's on your side."

Dr. Martin, from The Doctor Is In, episode 1140

Does low stomach acid affect your vitamins?

Yes. He says you can swallow a mineral and still not absorb it.

To a listener asking about iodine:

If you don't have enough stomach acidity, even your trace minerals, you're not going to absorb them. You might be eating them, but you're not going to absorb them.

Dr. Martin, from The Doctor Is In, episode 884

B12 is the vitamin he singles out:

And if you got acid reflux, and you got low acidity in your stomach, and you got digestive issues, you're not absorbing B12 very well.

Dr. Martin, from The Doctor Is In, episode 699

He adds that seniors often do not absorb nutrients the way they used to. Read whether B12 is worth it for a woman over 60.

Do acid reducers lower B12 and magnesium?

He says they do, because they lower the acid you need to absorb them.

On a study of PPIs, the drugs that lower stomach acid:

But they're showing you're not absorbing magnesium. You're not absorbing B-12. That is essential.

Dr. Martin, from The Doctor Is In, episode 825

And on magnesium:

Your stomach acidity, and when you're on medications to reduce acidity, guess what? You're not absorbing magnesium.

Dr. Martin, from The Doctor Is In, episode 1334

If you take an antacid or an acid reducer, any change to it is your doctor's call. What you can do is ask your doctor to test your B12 and magnesium.

Is it heartburn or your heart?

You cannot tell for sure on your own, so do not guess.

He knows how frightening reflux can feel:

A lot of people think they're even having a heart attack when they get acid reflux.

Dr. Martin, from The Doctor Is In, episode 574

Never assume chest pain is just heartburn. If it is new or severe, or comes with shortness of breath, sweating, or pain in your arm, jaw or back, call 911. If heartburn keeps coming back, see your doctor.

Hear him answer it on the show

Episode 884 is a listener Q&A show. Carol's reflux question comes about halfway through.

Common questions

Can biotin cause acid reflux?

He does not link biotin to reflux. For any vitamin that burns, his advice stays the same: take it with food and look at the stomach. When he talks about biotin, it is about hair, and he says he has never seen anyone overdose on it. Episode 833.

Can low magnesium cause acid reflux?

Not as the main cause, in his view. He says low magnesium can be an effect of reflux and could be a factor, but the number one cause is low stomach acid. Episode 1188.

Is apple cider vinegar good for low stomach acid?

He suggests a teaspoon or two of apple cider vinegar for a short time, to help the acidity in the stomach. Episode 1140. Dilute it in water, and stop if it makes the burn worse.

Give your stomach some backup

His answer to a vitamin that burns is to look after the stomach. Ultra Digest-All is the clinic's digestive enzyme formula, three enzyme blends that work on protein, carbs and fat to support natural digestion. It is support for digestion, not a heartburn medicine.

Shop Ultra Digest-All

60-day money-back guarantee. If you take anything for reflux, check with your doctor before adding it.
Dr. Martin
About the author

Dr. Martin

Host of The Doctor Is In. Formulated in clinic. Used in clinic since 1911.