Herb & supplement monograph

Yogurt Drug Interactions, Uses, Effectiveness, Safety & More

Medically reviewed by Dr. Brian Staiger, PharmD, BCPS ·Updated July 2026

What is this page for?

First and foremost: how Yogurt interacts with medications. The heart of this page is the interaction list — every drug Yogurt is known to interact with, and how serious each one is.

But these pages have grown well beyond that into a full monograph — what Yogurt is, what people use it for and how strong the evidence is, its safety and side effects, and answers to the questions we’re asked most — written and reviewed by the clinical staff at HelloPharmacist. It’s educational information from our licensed clinical databases, not medical advice, and we don’t sell or endorse products. Our editorial policy

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Reviewed by licensed pharmacists Sourced from Natural Medicines

On this page

Interaction report

Drugs that interact with Yogurt

22 medications have a known interaction with Yogurt, graded by severity. Select any drug for the full evidence-based detail.

Don’t want to scroll the list? Just ask.

Tell us the medications you take and we’ll check each one against Yogurt using our pharmacist-reviewed interaction data.

AI summaries are generated from our Yogurt interaction data for education only — always confirm with your pharmacist. How we use AI

2,830 drugs

Read The List Like a Pharmacist

What Severity, Likelihood & Evidence Mean

Severity — How Serious It Can Be

Major. Clinically significant; generally best avoided, or used only under direct professional supervision.
Moderate. May need monitoring, a dose adjustment, or separating the times you take each one.
Minor. Generally not clinically significant, but still worth noting and mentioning to your pharmacist.
No known interaction. Checked against our sources with nothing documented — not the same as proven safety.

Likelihood — How Well It’s Documented

Likely. Well-controlled human studies have demonstrated the likely existence of this interaction
Probable. Interaction has not been documented in well-controlled studies, however, the interaction has been demonstrated in some small human studies or in controlled animal studies in conjunction with multiple case reports.
Possible. Interaction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists
Unlikely. Interaction has been demonstrated in animal or in lab research but has been shown not to occur in humans.

Where This Data Comes From

Interaction records are evidence-graded and sourced from the Natural Medicines database (TRC Healthcare), the same reference used by pharmacists and hospitals.
Each drug listed above links to the full report for that exact Yogurt combination — clinical detail, likelihood, evidence level, and citations.
Content is reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

The big picture

The kinds of drugs Yogurt affects

Every type of medication (drug category) Yogurt is known to interact with. Open any category for the detail — or search your exact drug in the checker above.

All 3 drug categories Yogurt interacts with

Ciprofloxacin (cipro)Tetracycline AntibioticsNilotinib (tasigna)

Ciprofloxacin (Cipro)

Taking yogurt with ciprofloxacin might reduce the levels and clinical effects of ciprofloxacin.
A small study in humans shows that concomitant administration of yogurt and ciprofloxacin can significantly reduce absorption of ciprofloxacin.

Likelihood Probable Evidence B

Tetracycline Antibiotics

Taking yogurt with tetracycline antibiotics seems to reduce the levels and clinical effects of tetracycline antibiotics.
Concomitant administration with yogurt can reduce the absorption of tetracycline antibiotics, likely due to its calcium content.

Likelihood Probable Evidence D

Nilotinib (Tasigna)

Yogurt might increase the absorption of nilotinib; however, it is unlikely to alter its clinical effects.
Pharmacokinetic research in humans shows that taking nilotinib 400 mg dispersed in 1 teaspoon of yogurt increases absorption of nilotinib by about 31%. However, yogurt does not appear to modify the metabolism of nilotinib or increase the risk of adverse effects.

Likelihood Probable Evidence B

Monograph

Yogurt: Uses, Safety & Side Effects

Medically reviewed by Dr. Brian Staiger, PharmD, BCPS · Reviewed July 2026 ·

The bottom line

Yogurt is a fermented dairy food that often contains live bacteria (probiotics) and provides protein, calcium, and other nutrients. For most healthy people it is a safe, nutritious food, and some yogurts with live cultures may help with digestion and gut balance, though evidence varies by strain and condition. If you are lactose intolerant, have a milk allergy, or have a weakened immune system, talk to your pharmacist or doctor first.

Part used: Fermented milk product (made with live bacterial cultures)
Common forms: Plain yogurt, Greek yogurt, drinkable yogurt (kefir-style), probiotic yogurt, dairy-free yogurt alternatives

People commonly use it for

Digestive health
Restoring gut bacteria after antibiotics
Vaginal yeast or bacterial balance
Source of protein and calcium
General immune and gut support

Popular and traditional uses — not proof it works. See “Uses & effectiveness” below for the evidence.

Safety at a glance

OverallLikely safe

Yogurt is generally safe as a food for most healthy people.

PregnancyLikely Safe

When consumed in amounts commonly found in foods.

Read the full pregnancy detail

BreastfeedingLikely Safe

When used in amounts commonly found in foods. There is insufficient reliable information available about the safety of the intravaginal use of yogurt...

Read the full breastfeeding detail

Pregnancy & breastfeeding ratings are from Natural Medicines (Therapeutic Research Center). Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

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Overview

Yogurt is a food made by adding live bacterial cultures to milk. The bacteria ferment the milk's natural sugar (lactose), which thickens the milk and gives yogurt its tangy taste. Common cultures include Lactobacillus bulgaricus and Streptococcus thermophilus, and some products add extra strains like Lactobacillus acidophilus or Bifidobacterium.

Yogurt has been eaten for thousands of years across many cultures. Today it comes in many forms, including plain, Greek (strained for more protein), drinkable, and dairy-free versions made from soy, coconut, almond, or oat. Yogurts that still contain live, active cultures are often marketed for "gut health" or as a natural source of probiotics.

People use yogurt both as a nutritious food and as a way to add beneficial bacteria to their diet. It is a good source of protein, calcium, and other nutrients.

How it works

The main proposed benefits come from live probiotic bacteria and the nutrients in yogurt. Probiotics are thought to support a healthy balance of bacteria in the gut, which may help digestion and possibly the immune system. Much of this understanding comes from laboratory studies and some clinical trials of specific strains, not from yogurt in general.

The bacteria in yogurt also produce lactase, the enzyme that breaks down lactose. This helps explain why yogurt is often easier to digest than plain milk for people who are lactose intolerant.

Yogurt also delivers protein, calcium, B vitamins, and other nutrients that support overall health. Many of the broader "gut" effects remain under study, and benefits can differ a lot depending on the strains used and whether the cultures are still alive in the final product.

Effectiveness

Does Yogurt work?

Here’s what the research actually shows for each use — graded by Natural Medicines and reviewed by Dr. Brian Staiger, PharmD.

Evidence overview · 34 uses evaluated

3 Possibly effective 31 Insufficient evidence

How to read these evidence grades

Natural Medicines’ 7-point scale. We show each rating’s label word-for-word.

1EffectiveStrong, consistent evidence it works.

2Likely EffectiveGood evidence, though not yet conclusive.

3Possibly EffectiveSome evidence suggests a benefit.

4Possibly IneffectiveSome evidence it may not help.

5Likely IneffectiveFairly strong evidence it doesn’t help.

6IneffectiveStrong evidence it doesn’t work.

7Insufficient Reliable Evidence to RateToo little research to say either way.

Possibly Effective Constipation