Probiotics Upset Your Stomach? Bloating, Nausea & Stomach Discomfort Explained

Can probiotics upset your stomach? Yes. Although many people take probiotics without problems, some report temporary bloating, gas, nausea, cramps or stomach discomfort. Others report the opposite and find that a particular probiotic improves their digestive comfort. The response can vary with the strain, dose, formulation, other ingredients and the individual.

Why can probiotics cause bloating or stomach discomfort?

Probiotics are live microorganisms, and changing fermentation activity in the digestive tract can change gas production and bowel habits. A reaction to a finished product may also involve its prebiotics, excipients or other ingredients rather than the probiotic organism alone.

Is stomach discomfort normal when starting probiotics?

Mild digestive changes can occur, but persistent, severe or worsening pain, vomiting, significant diarrhoea or other concerning symptoms should not simply be assumed to be a normal probiotic response. Stop and seek advice from an appropriate healthcare professional when symptoms are significant or persistent.

Does stomach acid affect probiotic bacteria?

It can. Survival through gastric conditions varies substantially between probiotic strains and formulations. This is one reason protective delivery systems are studied rather than assuming every organism behaves the same way in the stomach.

Would a delayed-release capsule protect probiotics from stomach acid?

A delayed-release capsule is designed to postpone release compared with a conventional immediate-release hard capsule. For a compatible dry probiotic powder, delaying release can reduce early release of the powder in the stomach. Research using simulated gastrointestinal conditions has shown improved survival for some probiotic formulations using delayed-release approaches.

This does not mean a delayed-release capsule guarantees survival of every probiotic strain, or that it will prevent stomach symptoms. Strain, formulation, storage, moisture and dose all matter.

Could delayed release reduce direct exposure of probiotic powder to the stomach?

It can delay when the capsule contents are released, so it is a formulation option when immediate release in the stomach is not wanted. However, there is not enough evidence to promise that changing the capsule alone will prevent nausea, bloating or stomach pain in a particular person.

DRcaps® vs ordinary HPMC capsules

Ordinary HPMC capsules are plant-based hard capsules intended for conventional use. DRcaps® are HPMC capsules specifically designed for delayed release. They should not be described as identical to a conventional pharmaceutical enteric-coated dosage form.

See our guide to probiotics and stomach acid.

Can I put probiotic powder into DRcaps®?

DRcaps® can be used with compatible dry fills, including dry probiotic powders where delayed release is part of the formulation goal. Follow the ingredient supplier’s storage and handling instructions and avoid unnecessary moisture and heat.

Which DRcaps® size should I use for probiotic powder?

Choose by volume and bulk density, not milligrams alone. Two powders with the same weight can occupy different volumes. Use our empty capsule size guide.

Frequently Asked Questions

Why does one probiotic upset my stomach while another does not?

Products can contain different strains, CFU levels, prebiotics and excipients. Even products using the same species name can contain different strains and formulations.

Does a higher CFU automatically mean a better probiotic?

No. CFU count is only one characteristic. Strain selection, evidence, stability, storage and delivery format also matter.

Are DRcaps® enteric capsules?

DRcaps® are delayed-release HPMC capsules. We describe them as delayed-release rather than treating them as equivalent to a conventional pharmaceutical enteric-coated capsule.

Where can I buy empty delayed-release capsules?

Browse Pure Capsules® DRcaps® delayed-release empty capsules.

This article provides general formulation information and is not medical advice. If a supplement causes significant or persistent symptoms, seek advice from a qualified healthcare professional.

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Customer Reviews

I've been using DR caps from pure capsules for a few years

I have been using the clear DR capsules from pure capsules for three years now. Like many others leaving reviews, I have a chronic UTI and I'm on hiprex and long term antibiotics. In order to protect my stomach I encapsulate all of these drugs in a 000 capsule which fits hiprex and coamoxiclav. The service that Bob and his team gives is first class. Quick to answer emails and the capsules are sent out very quickly.
Date of experience: 4 August 2023

Excellent Delayed Release Capsules Would highly recommend this Company and…

Would highly recommend this Company and their delayed release capsules if you're on long term medication that affects your stomach. My symptoms are much improved and the staff couldn't be more friendly and helpful when processing orders. A truly professional service. Thank you.
Date of experience: 2 August 2023

This company is amazing

This company is amazing. They have acid resistant capsules, which I can put my medication in, and have literally been a life-saver. They are reasonably priced, available to purchase as a individual customer (instead of just being for businesses), and the capsules always arrive in good time. I have never had any issues with this company and highly recommend them.
Date of experience: 14 July 2023

God Send for cUTI long term medication

These have been a god send. My long term medication for CUTI (hiprex and antibiotics) are very difficult to take as harsh on the tummy causing nausea, burning, reflux etc. If i encapsulate them in the enteric coated capsules they don't release until they hit the small intestine so all them nasty side effected no longer happen. Without these i wouldn't be able to stay on my medication and be extremely unwell so I am very grateful these are available!
Date of experience: 1 August 2023
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