Research shows the best time to take a probiotic is first thing in the morning before eating breakfast or before going to sleep at night. Probiotics are most effective when taken on an empty stomach. Taking probiotics at least 30 minutes before a meal will reduce the time it takes for the good bacteria to get to your gut.

Probiotics are dietary supplements containing beneficial bacteria naturally occurring in your intestinal tract.

Environmental factors such as stress, processed food, chemicals in our water and food, pollution, radiation, and certain medications can negatively impact the diversity and number of good bacteria in your gut.

Probiotic dietary supplements aim to maintain and restore the natural diversity of your gut bacteria.

When you take your probiotic matters. Consistency is key according to Breanna Woods, MS, RDN, a registered dietician with Omni-Biotic USA.

For optimal health benefits of probiotics, it is best to take your supplement daily. Establishing a routine around when to take your probiotic can make it easier to remember.

Should You Take Probiotics on a Full or Empty Stomach?

Yes, timing does matter. First and foremost, consistency is key.

The natural environment for probiotic bacteria is the small and large intestine. That is where they perform all their goodness to strengthen your digestive tract and immune system.

To get there they have to pass through your stomach where the environment is very acidic.

Your stomach is designed to kill any bad bacteria and viruses that might make their way into your body via food and water. For the probiotic bacteria, this is bad news as prolonged exposure to stomach acid kills them.

The goal is to get the probiotics through your stomach acid as fast as possible. To do this, it’s recommended to take probiotics ideally on an empty stomach (i.e., 2-3 hours after your last meal and 30 minutes before the next meal), so the probiotics bacteria can move through the stomach as fast as possible.

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Meal Composition May Help

Everything you eat and drink sits in the stomach for some time while the stomach secretes stomach acid and digestive enzymes. The heavier the meal and the more you eat, the longer it takes for the food to move through the stomach to the small intestine.

Many probiotics are recommended to be taken on an empty stomach to ensure they pass swiftly through the stomach and get as little exposure as possible to the hostile stomach acid. Even probiotics that come in stomach acid-resistant capsules benefit from moving through the stomach as swiftly as possible to ensure that the capsule does not open until it reaches the large intestine.

Many people see an improvement in the effectiveness of probiotics by taking them before breakfast as part of their morning routine. A small, easily digestible meal or a light snack is best if you eat before or after taking your probiotics.

Many people see an improvement in the effectiveness of probiotics by taking them before breakfast as part of their morning routine. A small, easily digestible meal or a light snack is best if you eat before or after taking your probiotics.

Stomach Acid and Timing Probiotic Use

The vast majority of your healthy gut bacteria live in the small and large intestine where they are not exposed to stomach acid. The bacteria in your probiotic supplement must travel through the stomach to reach the small and large intestines.

Certain factors such as the timing and size of your last meal determine how quickly your probiotic bacteria can pass through the stomach into a more hospitable environment.

The Role Stomach Acid Plays

The stomach's acidic environment plays an important role in digestive health.

Stomach acid helps break down carbohydrates and proteins and kills germs that enter your body via your mouth.

The pH value of the stomach is between 1.7 to 2.0. The pH value increases throughout the small intestine up to a pH of 7.0 in some parts of the large intestine. Most healthy bacteria in your digestive system live in the small and large intestines due to the higher pH value.

Prolonged exposure to the acidic environment in the stomach can kill the beneficial bacteria, which is why timing probiotic use is so important.

Different Strains

Some bacterial strains are more resilient toward stomach acid and therefore have better survival rates than others as they pass through the stomach. Survival rates of different strains can be improved depending on the delivery method of the probiotic supplement.

Unfortunately, some dangerous microbes such as E.Coli and H. Pylori are also very resistant to stomach acid and have a higher survival rate through the stomach.

Cases of the stomach flu or food poisoning are often due to an overload of these bad microorganisms passing through the stomach and into your small and large intestine where the body tries to get rid of them very quickly via diarrhea or vomiting.