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Drug Interactions between Acidophilus Probiotic Blend and letrozole / ribociclib

This report displays the potential drug interactions for the following 2 drugs:

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Interactions between your drugs

Moderate

lactobacillus acidophilus ribociclib

Applies to: Acidophilus Probiotic Blend (lactobacillus acidophilus) and letrozole / ribociclib

MONITOR: Probiotic use during immunosuppressant or intense antineoplastic therapy may theoretically increase the risk of infections from the live microorganisms contained in probiotic products. Patients may be immunosuppressed if they have recently received or are receiving alkylating agents, antimetabolites, radiation, some antirheumatic agents, high dosages of corticosteroids or adrenocorticotropic agents, or long-term topical or inhaled corticosteroids. Although probiotics are generally considered safe, with minimal to low pathogenicity, infections such as bacteremia and endocarditis with various strains commonly found in probiotics (e.g., lactobacilli, bifidobacteria, Bacillus subtilis) have been rarely reported, primarily in critically ill patients or patients with significant underlying medical conditions such as malignancy, organ transplantation, AIDS, valvular heart disease, diabetes mellitus, recent surgery, or compromised immune system. Lactobacillus bacteremia has also been reported following endoscopy. In addition, cases of lactobacillus pneumonia and liver abscess, as well as Saccharomyces fungemia, pneumonia, liver abscess, peritonitis and vaginitis, have been described in the medical literature.

MANAGEMENT: Caution is advised when probiotics are used during immunosuppressant or intense antineoplastic therapy. It may be advisable to avoid using probiotics, particularly products containing saccharomyces boulardii, in patients who are significantly immunosuppressed unless benefits are anticipated to outweigh the potential risk of infection.

References

  1. Salminen MK, Rautelin H, Tynkkynen S, et al. (2004) "Lactobacillus bacteremia, clinical significance, and patient outcome, with special focus on probiotic L. rhamnosus GG." Clin Infect Dis, 38, p. 62-9
  2. Salminen MK, Tynkkynen S, Rautelin H, et al. (2002) "Lactobacillus bacteremia during a rapid increase in probiotic use of Lactobacillus rhamnosus GG in Finland." Clin Infect Dis, 35, p. 1155-60
  3. Rautio M, Jousimies-Somer H, Kauma H, et al. (1999) "Liver abscess due to a Lactobacillus rhamnosus strain indistinguishable from L. rhamnosus strain GG." Clin Infect Dis, 28, p. 1159-60
  4. Schlegel L, Lemerle S, Geslin P (1998) "Lactobacillus species as opportunistic pathogens in immunocompromised patients." Eur J Clin Microbiol Infect Dis, 17, p. 887-8
  5. Saxelin M, Chuang NH, Chassy B, et al. (1996) "Lactobacilli and bacteremia in southern Finland, 1989-1992" Clin Infect Dis, 22, p. 564-6
  6. Husni RN, Gordon SM, Washington JA, Longworth DL (1997) "Lactobacillus bacteremia and endocarditis: review of 45 cases." Clin Infect Dis, 25, p. 1048-55
  7. Oggioni MR, Pozzi G, Valensin PE, Galieni P, Bigazzi C (1998) "Recurrent septicemia in an immunocompromised patient due to probiotic strains of Bacillus subtilis." J Clin Microbiol, 36, p. 325-6
  8. Mackay AD, Taylor MB, Kibbler CC, Hamilton-Miller JM (1999) "Lactobacillus endocarditis caused by a probiotic organism." Clin Microbiol Infect, 5, p. 290-2
  9. Borriello SP, Hammes WP, Holzapfel W, et al. (2003) "Safety of probiotics that contain lactobacilli or bifidobacteria." Clin Infect Dis, 36, p. 775-80
  10. Lolis N, Veldekis D, Moraitou H, et al. (2008) "Saccharomyces boulardii fungaemia in an intensive care unit patient treated with caspofungin." Crit Care, 12, epub
  11. Boyle RJ, Robins-Browne RM, Tang ML (2006) "Probiotic use in clinical practice: what are the risks?" Am J Clin Nutr, 83, p. 1256-64
  12. Pruccoli G, Silvestro E, Napoleone CP, Aidala E, Garazzino S, Scolfaro C (2024) Are probiotics safe? Bifidobacterium bacteremia in a child with severe heart failure. https://www.researchgate.net/publication/333853508_Are_probiotics_safe_Bifidobacterium_bacteremia_in_a_child_with_severe_heart_failure
View all 12 references

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Moderate

letrozole ribociclib

Applies to: letrozole / ribociclib and letrozole / ribociclib

MONITOR: Coadministration with ribociclib may increase the plasma concentrations and pharmacologic effects of drugs that are substrates of CYP450 3A4. The proposed mechanism is decreased clearance due to ribociclib-mediated inhibition of CYP450 3A4 metabolism. In healthy study subjects, administration of midazolam, a sensitive CYP450 3A4 substrate, with multiple 400 mg daily doses of ribociclib increased the midazolam peak plasma concentration (Cmax) and systemic exposure (AUC) by 2.1-fold and 3.8-fold, respectively, compared to midazolam administered alone. When given at a clinically relevant dose of 600 mg daily, ribociclib is predicted to increase midazolam Cmax and AUC by 2.4-fold and 5.2-fold, respectively.

MANAGEMENT: Caution is advised when ribociclib is used concomitantly with drugs that undergo metabolism by CYP450 3A4, particularly those with a narrow therapeutic range. Dosage adjustments as well as clinical and laboratory monitoring may be appropriate for some drugs whenever ribociclib is added to or withdrawn from therapy.

References

  1. Zhou XJ, Zhou-Pan XR, Gauthier T, Placidi M, Maurel P, Rahmani R (1993) "Human liver microsomal cytochrome P450 3A isozymes mediated vindesine biotransformation. Metabolic drug interactions." Biochem Pharmacol, 45, p. 853-61
  2. Trivier JM, Libersa C, Belloc C, Lhermitte M (1993) "Amiodarone N-deethylation in human liver microsomes: involvement of cytochrome P450 3A enzymes (first report)." Life Sci, 52, pl91-6
  3. Rawden HC, Kokwaro GO, Ward SA, Edwards G (2000) "Relative contribution of cytochromes P-450 and flavin-containing monoxygenases to the metabolism of albendazole by human liver microsomes." Br J Clin Pharmacol, 49, p. 313-22
  4. DSouza DL, Levasseur LM, Nezamis J, Robbins DK, Simms L, Koch KM (2001) "Effect of alosetron on the pharmacokinetics of alprazolam." J Clin Pharmacol, 41, p. 452-4
  5. Katoh M, Nakajima M, Yamazaki H, Yokoi T (2001) "Inhibitory effects of CYP3A4 substrates and their metabolites on P-glycoprotein-mediated transport." Eur J Pharm Sci, 12, p. 505-13
  6. Kane GC, Lipsky JJ (2000) "Drug-grapefruit juice interactions." Mayo Clin Proc, 75, p. 933-42
  7. Yu DK (1999) "The contribution of P-glycoprotein to pharmacokinetic drug-drug interactions." J Clin Pharmacol, 39, p. 1203-11
  8. Nagy J, Schipper HG, Koopmans RP, Butter JJ, van Boxtel CJ, Kager PA (2002) "Effect of grapefruit juice or cimetidine coadministration on albendazole bioavailability." Am J Trop Med Hyg, 66, p. 260-3
  9. (2017) "Product Information. Kisqali (ribociclib)." Novartis Pharmaceuticals
View all 9 references

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Drug and food interactions

Moderate

ribociclib food

Applies to: letrozole / ribociclib

GENERALLY AVOID: Pomegranates and grapefruit may increase the systemic exposure to ribociclib. The proposed mechanism is inhibition of CYP450 3A4-mediated first-pass metabolism in the gut wall by certain compounds present in these fruits. Increased exposure to ribociclib may increase the risk of adverse effects such as infections, neutropenia, leukopenia, anemia, thrombocytopenia, anorexia, nausea, vomiting, diarrhea, stomatitis, alopecia, fatigue, headache, and abnormal liver function may be increased.

MANAGEMENT: Patients receiving ribociclib should avoid consumption of pomegranates or pomegranate juice and grapefruit or grapefruit juice during treatment.

References

  1. (2017) "Product Information. Kisqali (ribociclib)." Novartis Pharmaceuticals

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Therapeutic duplication warnings

No warnings were found for your selected drugs.

Therapeutic duplication warnings are only returned when drugs within the same group exceed the recommended therapeutic duplication maximum.

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Drug Interaction Classification

These classifications are only a guideline. The relevance of a particular drug interaction to a specific individual is difficult to determine. Always consult your healthcare provider before starting or stopping any medication.
Major Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.
Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
Minor Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan.
Unknown No interaction information available.

Further information

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