Drug & supplement interaction

Streptococcus Thermophilus + Ciprofloxacin

Ciprofloxacin brand names: Cipro, Ciprobay, Cipro XR, Ciloxan, Cipro IV, and others.

No Known Interaction
Medically reviewed by · Updated July 2026 · Pair last verified Sep 13, 2026
The bottom line No known interaction

We found no known interaction between Streptococcus Thermophilus and Ciprofloxacin in our sources. Absence of a documented interaction is not the same as proven safety, and does not guarantee one does not exist. Do not start, stop, or change a medication or supplement based on this page; confirm with your pharmacist or doctor first. Additionally, although there is no interaction, the label for Ciprofloxacin states a food rule worth keeping to, and the two are separately associated with some of the same side effects, which would make a new symptom harder to attribute to one or the other.

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Interaction report

Streptococcus Thermophilus and Ciprofloxacin

We checked these two against our interaction database. Here is what we found.

No Known Interaction Found

We did not find a documented interaction between Ciprofloxacin and Streptococcus Thermophilus in our sources. This does not guarantee that the combination is completely free of risk — there is often limited research on supplements and herbal products, especially around drug interactions.

Worth understanding: our licensed dataset holds no drug-interaction record for Streptococcus Thermophilus at all — not against Ciprofloxacin, and not against any other medication we track. This verdict therefore rests on the absence of any recorded data, not on research that looked at this combination and found nothing. We cannot rule an interaction out.

If you decide to take both, the practical routine is simple: add one new thing at a time and note the date you started it. If the combination is going to disagree with you, it usually shows in the first days to a couple of weeks — and a start date turns “I’ve been feeling off” into something a pharmacist can actually work with. Do not stop a prescribed medicine on your own.

Always talk with your pharmacist or doctor before making changes to your medications or supplements, particularly if you take several medications or have an ongoing health condition.

Streptococcus Thermophilus safety at a glance

Streptococcus Ther... overall Use caution Generally well tolerated in healthy people, but people with weakened immune systems should be careful.
Pregnancy Possibly Safe When used orally and appropriately, short-term. A combination of Streptococcus thermophilus, Lactobacillus acidophilus, Bifidobacterium animalis, and Lactobacil... Read the full pregnancy detail
Breastfeeding Use caution Limited safety data on supplements; food sources are generally considered acceptable, but ask your provider first.

Pregnancy & breastfeeding ratings are from Natural Medicines (Therapeutic Research Center) — the full detail is in the Special populations card below. Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Still wondering about combining Ciprofloxacin and Streptococcus Thermophilus? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
What to actually watch for

No Interaction Found — But Data Suggests Streptococcus Thermophilus and Ciprofloxacin May Share a Side Effect

This is not an interaction. Neither one changes how your body handles the other, and nothing here says they react together. What our sources do show is that each has separately been linked to the effects below — so taking both can make those effects more likely to turn up, and harder to pin on one or the other if they do. One of them is worth acting on rather than waiting out — marked below.

  • A higher chance of infection Worth acting on Additional detail

    Streptococcus Thermophilus

    “Since many probiotic preparations contain live and active microorganisms, there is some concern that they might cause pathogenic infection in some patients. Bacteremia and sepsis have been reported in patients with indwelling or central venous catheters or patients who are severely ill and/or immunocompromised, including preterm infants, that were using probiotic products.”

    Streptococcus Thermophilus · Natural Medicines adverse-effect record, reported in prematurity.

    6 sources cited
    1. 4380. Saxelin M, Chuang NH, Chassy B, et al. Lactobacilli and bacteremia in southern Finland 1989-1992. Clin Infect Dis 1996;22:564-6. PubMed
    2. 8561. MacGregor G, Smith AJ, Thakker B, Kinsella J. Yoghurt biotherapy: contraindicated in immunosuppressed patients? Postgrad Med J 2002;78:366-7. PubMed
    3. 13008. Land MH, Rouster-Stevens K, Woods CR, et al. Lactobacillus sepsis associated with probiotic therapy. Pediatrics 2005;115:178-81.
    4. 13070. De Groote MA, Frank DN, Dowell E, et al. Lactobacillus rhamnosus GG bacteremia associated with probiotic use in a child with short gut syndrome. Pediatr Infect Dis J 2005;24:278-80. PubMed
    5. 90298. Vahabnezhad E, Mochon AB, Wozniak LJ, Ziring DA. Lactobacillus bacteremia associated with probiotic use in a pediatric patient with ulcerative colitis. J Clin Gastroenterol. 2013;47(5):437-9. PubMed
    6. 102416. Pruccoli G, Silvestro E, Pace Napoleone C, Aidala E, Garazzino S, Scolfaro C. Are probiotics safe? Bifidobacterium bacteremia in a child with severe heart failure. Infez Med. 2019;27(2):175-178.

    Ciprofloxacin

    Listed in the ADVERSE REACTIONS section of the FDA label for Ciprofloxacin. Read the label on DailyMed ›

Effects for Ciprofloxacin come from the ADVERSE REACTIONS section of its FDA label; effects for Streptococcus Thermophilus come from the Natural Medicines adverse-effect record, quoted above. Wording is matched across sources by our own clinical vocabulary, so treat this as a prompt to pay attention, not a diagnosis.

Special populations

Streptococcus Thermophilus in Pregnancy & Breastfeeding

Pregnancy Possibly Safe

When used orally and appropriately, short-term. A combination of Streptococcus thermophilus, Lactobacillus acidophilus, Bifidobacterium animalis, and Lactobacillus delbrueckii has been used with apparent safety for 8 weeks starting at 24-28 weeks gestation.

DISCLAIMER: This tool is intended for informational purposes only, and should not be interpreted as specific medical advice. Patients should consult with a qualified healthcare provider before making decisions about therapies and/or health conditions.© 2026 Therapeutic Research Center

How to take them

Some Ciprofloxacin Products Have a Food Rule — Streptococcus Thermophilus Should Not Break It

At least one FDA label for a product containing Ciprofloxacin says to take it with food. If you take Streptococcus Thermophilus on an empty stomach out of habit, keep them separate — and take Ciprofloxacin with a meal where the label says to.

This may not be true of your version. Food instructions belong to the product, not the ingredient: two Ciprofloxacin products can carry different directions, and extended-release forms often differ from immediate-release ones. The label we read is quoted below — check the directions on your own box or bottle, or ask your pharmacist, for how to take the exact product you were given.

With Dairy Products Concomitant administration of CIPRO with dairy products (like milk or yogurt) or calcium-fortified juices alone should be avoided since decreased absorption is possible; however, CIPRO may be taken with a meal that contains these products.

From the Dosage and Administration section of the FDA label we read for Ciprofloxacin — where that label names a specific product, the instruction is that product's. Read the label on DailyMed ›

A food rule is not an interaction — it is about how much of the medicine you absorb. The directions that came with your own product, and your pharmacist, outrank anything on this page.

Overlapping uses

What Ciprofloxacin Is Prescribed For, and What Streptococcus Thermophilus Has Been Studied For

These two come up together because they touch the same health topic — not because they do the same job. Ciprofloxacin is a prescription medicine with approved uses on its FDA label. Streptococcus Thermophilus is a supplement: what follows is what researchers have looked at it for, and how strong that evidence is.

Ciprofloxacin is prescribed for: Ciprofloxacin belongs to a class of antibiotics called fluoroquinolones. It's prescribed to treat bacterial infections in many parts of the body — including the urinary tract, skin, lungs, bones, joints, and digestive system. It's also used to protect against or treat anthrax and plague after exposure. Because ciprofloxacin carries real risks, it's reserved for milder conditions like sinus infections, simple bladder infections, and flare-ups of chronic bronchitis only when there are no safer alternatives available.

Streptococcus Thermophilus has been studied for:

  • Diarrhea studied, not established Streptococcus Thermophilus has been studied for this. Natural Medicines rates the evidence: Insufficient Reliable Evidence To Rate Read what the research shows

    Streptococcus Thermophilus for diarrhea

    Oral Streptococcus thermophilus has only been evaluated in combination with other ingredients; its effect when used alone is unclear.

Effectiveness ratings and the research summaries above are the verbatim record from the Natural Medicines database, which grades evidence from “Effective” down to “Insufficient Reliable Evidence To Rate”. A rating below the top of that scale means researchers have looked at it — not that it works, and never that it can stand in for a prescribed medicine. Do not stop or replace Ciprofloxacin on your own; if you are taking Streptococcus Thermophilus for the same health topic, tell your prescriber, especially if the medicine is being adjusted to a target.

From our Q&A

Questions About Streptococcus Thermophilus or Ciprofloxacin

These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Streptococcus Thermophilus or Ciprofloxacin, not necessarily both, but if one is close to what you were about to ask it will usually go further than a database entry can:

Not quite your question? Ask our pharmacists directly — it is free, there is no account required, and answers usually come back within 24 hours.

Everything else you take

See Every Supplement That Interacts With Ciprofloxacin

This page covers Streptococcus Thermophilus only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Ciprofloxacin page lists 163 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), Apple (major), Asarabacca (major), Beer (major) and Grapefruit (major).

By severity: 8 major · 133 moderate · 22 minor.

From our pharmacist’s overview on the Ciprofloxacin page

“A glass of apple or grapefruit juice can sharply cut how much ciprofloxacin (Cipro) your body absorbs, because these juices block a transporter the antibiotic needs to reach the bloodstream. That is one of eight major-rated risks among the 163 supplement and herbal ingredients on file, and I treat this list as a genuine warning rather…”

Reviewed by 2 · Jul 18, 2026

Open the Ciprofloxacin interaction page

One more smart check

Taking Streptococcus Thermophilus as Part of a Dietary Supplement Product? Check It for Interactions

We hold 1,450 real supplement products containing Streptococcus Thermophilus, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Streptococcus Thermophilus. Even though Streptococcus Thermophilus itself has no known interaction with Ciprofloxacin, another ingredient on your label might. Find your product and we’ll check every ingredient on its label:

How much people look this up

Where Streptococcus Thermophilus and Ciprofloxacin Sit Against Everything Else

Out of every supplement and medication people look up on HelloPharmacist, here is where these two land this week — and which way each has been moving.

Supplement Streptococcus Thermophilus
Top 25%

#196 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Ciprofloxacin
Top 5%

#56 of 2,830 medications looked up here in the last 7 days

29 days ago today

Position among everything looked up on this site, not a measure of how commonly either one is used or how important it is. A supplement can climb this list because of a news story. It counts every request to the page, automated ones included, and nothing here identifies anyone.

Where does our data come from?
  • Source: the Natural Medicines (TRC Healthcare) clinical database — the evidence-graded professional reference for herb & supplement interactions.
  • Citation library: 103,510 references behind our interaction content, 65,311 of them resolved to verified PubMed/DOI sources. See every Streptococcus Thermophilus reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Streptococcus Thermophilus and Ciprofloxacin records this page draws on were last updated July 11, 2026.
  • What “no known interaction” means: no documented interaction in the sources above — not a guarantee of safety. Supplements are studied far less than prescription drugs, so we say exactly what the evidence supports, and nothing more.
Data structure & sourcing designed and verified by .
Supplement

About Streptococcus Thermophilus

What is Streptococcus Thermophilus?

  • Digestive health
  • Lactose intolerance
  • Diarrhea prevention and support
  • Gut microbiome balance
  • Immune support

Streptococcus thermophilus is a friendly bacterium used as a probiotic, often combined with other strains in yogurt and supplements. It is generally well tolerated in healthy people and may help with digestion and lactose breakdown, but solid evidence for most specific health claims is still limited. Talk with your pharmacist or doctor before starting it, especially if your immune system is weak.

Streptococcus thermophilus · Streptococcaceae · Live bacterial cells (probiotic culture) · Capsules, powders, probiotic blends, yogurt, fermented dairy products

An interaction check asks whether these two react with each other — it does not ask whether Streptococcus Thermophilus is a good idea for someone in your situation. Here is what our Streptococcus Thermophilus record says about it on its own.

Streptococcus Thermophilus: dosing

There is no single official or standardized dose for Streptococcus thermophilus. Probiotic products are usually measured in colony-forming units (CFU), and amounts vary widely between products.The best approach is to follow the dosing directions on the product label, since formulas differ.

From our Streptococcus Thermophilus monograph — the full record covers uses, side effects and every documented interaction.

Read the full Streptococcus Thermophilus monograph & all interactions
Medication

About Ciprofloxacin

What Is Ciprofloxacin Used For?

Brand names: Cipro, Ciprobay, Cipro XR, Ciloxan, Cipro IV, Otiprio

Ciprofloxacin belongs to a class of antibiotics called fluoroquinolones. It's prescribed to treat bacterial infections in many parts of the body — including the urinary tract, skin, lungs, bones, joints, and digestive system. It's also used to protect against or treat anthrax and plague after exposure.

Because ciprofloxacin carries real risks, it's reserved for milder conditions like sinus infections, simple bladder infections, and flare-ups of chronic bronchitis only when there are no safer alternatives available.

See full Ciprofloxacin drug information
Keep checking

Other Drugs & Streptococcus Thermophilus

Browse every other medication we’ve checked against Streptococcus Thermophilus — both the ones with a known interaction and the ones without. Select any drug for the full detail.

0Major
0Moderate
0Minor
2,829No known interaction
2,829 No interaction
No interaction 2,829 drugs checked — show the list

We also checked Streptococcus Thermophilus against these medications and found no known interaction in our sources. Open any page to confirm.

Showing the 60 most looked-up of 2,829 medications checked with no known interaction — see the full Streptococcus Thermophilus list.

See the full Streptococcus Thermophilus interactions page
See every supplement checked against Ciprofloxacin, ranked by severity
Evidence & sources

Streptococcus Thermophilus References

The 21 references that drive our Streptococcus Thermophilus monograph and interaction data, from the evidence-graded Natural Medicines (TRC Healthcare) database. Citations with a link open the study on PubMed or the publisher’s site.

  1. Saxelin M, Chuang NH, Chassy B, et al. Lactobacilli and bacteremia in southern Finland 1989-1992. Clin Infect Dis 1996;22:564-6. PubMed
  2. Tynkkynen S, Singh KV, Varmanen P. Vancomycin resistance factor of Lactobacillus rhamnosus GG in relation to enterococcal vancomycin resistance (van) genes. Int J Food Microbiol 1998;41:195-204. PubMed
  3. Klein G, Zill E, Schindler R, et al. Peritonitis associated with vancomycin-resistant Lactobacillus rhamnosus in a continuous ambulatory peritoneal dialysis patient; organism identification, antibiotic therapy, and case report. J Clin Microbiol 1998;36:
  4. Kalima P, Masterton RG, Roddie PH, et al. Lactobacillus rhamnosus infection in a child following bone marrow transplant. J Infect 1996;32:165-7. PubMed
  5. Goldin BR. Health Benefits of probiotics. Br J Nutr 1998;80:S203-7. DOI
  6. Rautio M, Jousimies-Somer H, Kauma H, et al. Liver abscess due to Lactobacillus rhamnosus strain indistinguishable from L. rhamnosus strain GG. Clin Infect Dis 1999;28:1159-60.
  7. MacGregor G, Smith AJ, Thakker B, Kinsella J. Yoghurt biotherapy: contraindicated in immunosuppressed patients? Postgrad Med J 2002;78:366-7. PubMed
  8. Land MH, Rouster-Stevens K, Woods CR, et al. Lactobacillus sepsis associated with probiotic therapy. Pediatrics 2005;115:178-81.
  9. De Groote MA, Frank DN, Dowell E, et al. Lactobacillus rhamnosus GG bacteremia associated with probiotic use in a child with short gut syndrome. Pediatr Infect Dis J 2005;24:278-80. PubMed
  10. Vahabnezhad E, Mochon AB, Wozniak LJ, Ziring DA. Lactobacillus bacteremia associated with probiotic use in a pediatric patient with ulcerative colitis. J Clin Gastroenterol. 2013;47(5):437-9. PubMed
  11. Dolatkhah N, Hajifaraji M, Abbasalizadeh F, Aghamohammadzadeh N, Mehrabi Y, Abbasi MM. Is there a value for probiotic supplements in gestational diabetes mellitus? A randomized clinical trial. J Health Popul Nutr. 2015;33:25. PubMed
  12. Pruccoli G, Silvestro E, Pace Napoleone C, Aidala E, Garazzino S, Scolfaro C. Are probiotics safe? Bifidobacterium bacteremia in a child with severe heart failure. Infez Med. 2019;27(2):175-178.
  13. Sendil S, Shrimanker I, Mansoora Q, Goldman J, Nookala VK. Lactobacillus rhamnosus bacteremia in an immunocompromised renal transplant patient. Cureus. 2020;12(2):e6887. PubMed
  14. Albarillo FS, Shah U, Joyce C, Slade D. Lactobacillus rhamnosus Infection: A single-center 4-year descriptive analysis. J Glob Infect Dis. 2020;12(3):119-123. PubMed
  15. Pasala S, Singer L, Arshad T, Roach K. Lactobacillus endocarditis in a healthy patient with probiotic use. IDCases. 2020;22:e00915. PubMed

Medication overviews come from MedlinePlus (NIH); supplement label data from the NIH Dietary Supplement Label Database. Content is written and reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

Pharmacist Counseling Corner

Taking Streptococcus Thermophilus and Ciprofloxacin Together: Common Questions

Is it safe to take Streptococcus Thermophilus with Ciprofloxacin?
We do not list a known interaction between Streptococcus Thermophilus and Ciprofloxacin. That does not guarantee the combination is risk-free, so confirm with your pharmacist or doctor — especially if you take other medications or have a health condition.
Do Streptococcus Thermophilus and Ciprofloxacin have any of the same side effects?
Yes — our sources link each of them separately to one of the same effects. That is not an interaction: neither changes how your body handles the other. It does mean that if one of those effects turns up, it can be harder to tell which one is behind it. They are listed on this page with the source behind each.
Should I take Streptococcus Thermophilus and Ciprofloxacin at the same time of day?
At least one FDA label for a product containing Ciprofloxacin says to take it with food. If you take Streptococcus Thermophilus on an empty stomach out of habit, keep them separate and take Ciprofloxacin with a meal where the label says to. Food instructions belong to the product rather than the ingredient — two Ciprofloxacin products can differ — so check the directions on your own box. This is about absorption, not an interaction.
Are Streptococcus Thermophilus and Ciprofloxacin used for the same thing?
They overlap in purpose, which usually means the real question is whether you need both rather than whether they are safe together. This page lists the shared uses and how strong the evidence is for Streptococcus Thermophilus in each. That is a conversation for your prescriber, especially if Ciprofloxacin is being adjusted to a target.
Does Ciprofloxacin interact with any supplements?
Yes. Ciprofloxacin has documented interactions with 163 supplements in our database — Streptococcus Thermophilus is not one of them. The Ciprofloxacin interaction page linked on this page lists every one, ranked by severity.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Where next

Keep Exploring

Streptococcus Thermophilus monograph Uses, safety profile, and every drug interaction in one place Ciprofloxacin drug information The full plain-English guide to this medication Ciprofloxacin supplement interactions Every supplement checked against Ciprofloxacin, ranked by severity Supplement interaction checker Check any supplement or product against your medications Browse medications A–Z Every drug we’ve checked against herbs & supplements References The 21 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Ciprofloxacin and Streptococcus Thermophilus?

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This information is for education only and is not a substitute for professional medical advice. Always check with your pharmacist or doctor before starting, stopping, or combining supplements and medications.