Drug & supplement interaction

Streptococcus Thermophilus + Ixazomib Citrate

Ixazomib Citrate brand name: Ninlaro.

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 Ixazomib Citrate 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 Ixazomib Citrate states a food rule worth keeping to.

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Interaction report

Streptococcus Thermophilus and Ixazomib Citrate

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 Ixazomib Citrate 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 Ixazomib Citrate, 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 Ixazomib Citrate and Streptococcus Thermophilus? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
What to actually watch for

What Streptococcus Thermophilus Itself Has Been Linked To

This is not an interaction — nothing below involves Ixazomib Citrate. It is the side-effect record for Streptococcus Thermophilus on its own, from the licensed Natural Medicines monograph. If something new turns up after you add Streptococcus Thermophilus, this list is the first place to look. One entry is worth acting on rather than waiting out — marked below.

  • A higher chance of infection Worth acting on Additional detail

    “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.

Everything above comes from the Natural Medicines adverse-effect record for Streptococcus Thermophilus — expand a row for the licensed statement it rests on. We read the ADVERSE REACTIONS section of Ixazomib Citrate’s FDA label too, and the two lists don’t meaningfully overlap — which is why no Ixazomib Citrate column appears here.

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 Ixazomib Citrate Products Have a Food Rule — Streptococcus Thermophilus Should Not Break It

At least one FDA label for a product containing Ixazomib Citrate says to take it on an empty stomach. Most supplements — Streptococcus Thermophilus included — are taken with a meal, so the easy mistake is swallowing both together at breakfast. Where that rule applies, keep Ixazomib Citrate on its own and move Streptococcus Thermophilus to a meal later in the day.

This may not be true of your version. Food instructions belong to the product, not the ingredient: two Ixazomib Citrate 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.

( 2.1 ) Dose should be taken at least one hour before or at least two hours after food.

From the Dosage and Administration section of the FDA label we read for Ixazomib Citrate — where that label names a specific product, the instruction is that product's. See the Ixazomib Citrate drug page ›

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.

Everything else you take

See Every Supplement That Interacts With Ixazomib Citrate

This page covers Streptococcus Thermophilus only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Ixazomib Citrate page lists 168 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), Beer (major), Grapefruit (major), Siberian Cocklebur (major) and St. John's Wort (major).

By severity: 6 major · 124 moderate · 38 minor.

From our pharmacist’s overview on the Ixazomib Citrate page

“Anyone taking ixazomib citrate (Ninlaro) for multiple myeloma should give this list real weight, because a supplement that shifts this chemotherapy's blood level can shift how well it works against the cancer. Of the 168 ingredients on file, 121 act on CYP3A4, the enzyme that clears ixazomib.”

Reviewed by 2 · Jul 18, 2026

Open the Ixazomib Citrate 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 Ixazomib Citrate, 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 Ixazomib Citrate 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%

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

29 days ago today
Medication Ixazomib Citrate
Top 25%

#524 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 Ixazomib Citrate 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 Ixazomib

What Is Ixazomib Used For?

Brand name: Ninlaro

Ninlaro (ixazomib) is used to treat multiple myeloma — a cancer of plasma cells in the bone marrow. It is always used together with two other medicines, lenalidomide and dexamethasone, and is approved for adults who have already tried at least one other treatment.

Ninlaro is not recommended as maintenance therapy or for newly diagnosed multiple myeloma in combination with lenalidomide and dexamethasone outside of controlled clinical trials.

See full Ixazomib 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 Ixazomib Citrate, 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 Ixazomib Citrate Together: Common Questions

Is it safe to take Streptococcus Thermophilus with Ixazomib Citrate?
We do not list a known interaction between Streptococcus Thermophilus and Ixazomib Citrate. 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.
Should I take Streptococcus Thermophilus and Ixazomib Citrate at the same time of day?
At least one FDA label for a product containing Ixazomib Citrate says to take it on an empty stomach, and supplements are usually taken with a meal — so taking them together at breakfast is the easy mistake. Where that applies, keep Ixazomib Citrate on its own and move Streptococcus Thermophilus to a meal later in the day. Food instructions belong to the product rather than the ingredient, so check the directions on your own box. This is about absorption, not an interaction.
Does Ixazomib Citrate interact with any supplements?
Yes. Ixazomib Citrate has documented interactions with 168 supplements in our database — Streptococcus Thermophilus is not one of them. The Ixazomib Citrate 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 Ixazomib drug information The full plain-English guide to this medication Ixazomib Citrate supplement interactions Every supplement checked against Ixazomib Citrate, 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

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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.