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Drug Interactions between Tri-Sprintec and troleandomycin

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

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Interactions between your drugs

Major

ethinyl estradiol troleandomycin

Applies to: Tri-Sprintec (ethinyl estradiol / norgestimate) and troleandomycin

MONITOR CLOSELY: Coadministration of clarithromycin, telithromycin, or troleandomycin may increase the plasma concentrations of drugs that are substrates of the CYP450 3A4 isoenzyme, by reducing their clearance, as these antibiotics are potent inhibitors of this isoenzyme. Many estrogen and progestin type medications are CYP450 3A4 substrates. These medications are used for a variety of purposes including, but not limited to, contraception, acne treatment, hormone replacement therapy, and appetite stimulation. When telithromycin was co-administered with oral contraceptives containing ethinyl estradiol and levonorgestrel, studies showed that the systemic concentration (AUC) of ethinyl estradiol did not change and the AUC of levonorgestrel increased by 50%. The study showed that telithromycin did not interfere with the anti-ovulatory effect of oral contraceptives containing ethinyl estradiol and levonorgestrel.

MANAGEMENT: Caution is advised if clarithromycin, telithromycin, or troleandomycin must be used concurrently with medications that undergo metabolism by CYP450 3A4. Patients should be monitored for increased adverse effects from the hormonal treatment if it must be co-administered with one of these antibiotics. Some serious side effects associated with hormonal treatment include, but are not limited to, cardiovascular disease (e.g., venous thromboembolism, myocardial infarction, and stroke); breast cancer; loss of bone mineral density; changes in mood; cholestatic jaundice; and dementia. Some of these side effects are affected by other factors such as medication dosage, concurrent medications, age, smoking status, and other disease states. If concurrent therapy with any of these antibiotics is necessary, please refer to the product labeling for more specific adverse effects to monitor for and counsel the patient and/or the patient's caregiver on the risks and benefits of concurrent therapy.

MONITOR CLOSELY: Estrogenic steroids, but not progestins, undergo enterohepatic cycling. It is possible that antimicrobials may interfere with the enterohepatic recirculation of estrogens by decreasing bacteria in the gastrointestinal tract that are responsible for regenerating parent estrogen molecules following first-pass metabolism. Most of the research regarding this possible interaction has been done with oral contraceptives; however, all estrogens appear to undergo enterohepatic recirculation so theoretically this interaction is a possibility with estrogen containing medications that are being used for alternative purposes. The risk appears to be small, and supportive data are primarily limited to anecdotal evidence from case reports and findings from uncontrolled or poorly controlled studies. Most antimicrobials, except for enzyme inducing medications like the rifamycins and possibly griseofulvin, have not been shown to significantly increase the clearance of estrogens present in combined hormonal contraceptives. It is possible that a small number of women may be more sensitive to the effects of antimicrobials on estrogen disposition in vivo, but risk factors or genetic predispositions have yet to be identified.

MANAGEMENT: If a person is using estrogen for a purpose other than contraception, it is important to note that there is a theoretical possibility of lower levels of systemic estrogen available during treatment with an antibiotic due to interference with enterohepatic cycling. These patients should be counseled to report any changes in efficacy of the hormonal product to their healthcare provider. In the case of contraception specifically, the Centers for Disease Control and Prevention do not consider most broad-spectrum antibiotics to significantly interfere with the effectiveness of combined hormonal contraception. However, the manufacturers of certain combined hormonal contraceptives and/or certain antibiotics do recommend using a back-up method of birth control for varying amounts of time; therefore, consulting the product labeling of each medication involved is advised. Some illnesses, as well as some antibiotics, may cause nausea, vomiting, and/or diarrhea. If the patient vomits within a few hours of taking an oral contraceptive pill, consult the product labeling for instructions on what to do in the event of a missed pill. Some authorities recommend a back-up method of birth control if an individual has persistent vomiting or diarrhea.

References

  1. Curtis KM, Tepper NK, Jatlaoui TC, et al. (2023) U.S. medical eligibility criteria (US MEC) for contraceptive use. https://www.cdc.gov/reproductivehealth/contraception/mmwr/mec/index.html
  2. Faculty of Sexual & Reproductive Healthcare (2023) FSRH CEU response to study: analysis of reports of unintended pregnancies associated with the combined use of non-enzyme inducing antibiotics and hormonal contraceptives - february 2021 https://www.fsrh.org/standards-and-guidance/documents/fsrh-ceu-respo
  3. Faculty of Sexual & Reproductive Healthcare (2023) FSRH CEU guidance: drug interactions with hormonal contraception (may 2022) https://www.fsrh.org/standards-and-guidance/documents/ceu-clinical-guidance-drug-interactions-with-hormonal/
  4. Simmons KB, Haddad LB, Nanda K, Curtis KM (2018) "Drug interactions between non-rifamycin antibiotics and hormonal contraception: a systemic review." Am J Obstet Gynecol, 218, 88-97.e14
  5. Zhanel GG, Siemens S, Slayter K, Mandell L (1999) "Antibiotic and oral contraceptive drug interactions: is there a need for concern?" Can J Infect Dis, 10, p. 429-33
  6. Black A, Francoeur D, Rowe T, et al. (2023) SOGC clinical practice guidelines canadian contraception consensus https://www.jogc.com/article/S1701-2163(16)30260-2/pdf
  7. Allen K (2012) "Contraception - common issues and practical suggestions." Aust Fam Physician, 41, p. 770-2
  8. (2010) "Product Information. Ketek (telithromycin)." Physicians Total Care
  9. (2009) "Product Information. Ketek (telithromycin)." Aventis Pharmaceuticals
  10. (2011) "Product Information. Ketek (telithromycine)." SANOFI BELGIUM
  11. (2023) "Product Information. Clarithromycin (clarithromycin)." Alembic Pharmaceuticals
  12. (2020) "Product Information. Clarithromycin ER (clarithromycin)." Actavis U.S. (Purepac Pharmaceutical Company)
  13. (2020) "Product Information. Act Clarithromycin XL (clarithromycin)." Actavis Pharma Company
  14. (2021) "Product Information. Biaxin BID (clarithromycin)." BGP Pharma Inc
  15. (2021) "Product Information. cLARITHROMYcin (Noumed) (cLARITHROMYcin)." Blooming Health Pty Ltd
  16. (2022) "Product Information. Klacid (cLARITHROMYcin)." Mylan Health Pty Ltd
  17. (2022) "Product Information. Klaricid IV (clarithromycin)." Viatris UK Healthcare Ltd
  18. (2023) "Product Information. Clarithromycin (clarithromycin)." Sun Pharma UK Ltd
  19. (2023) "Product Information. Clarithromycin (clarithromycin)." Milpharm Ltd
  20. (2015) "Product Information. Mycifor XL (clarithromycin)." Forum Products Ltd
  21. FDA. United States Food and Drug Administration (2023) Drug development and drug interactions: table of substrates, inhibitors and inducers. https://www.fda.gov/drugs/drug-interactions-labeling/drug-development-and-drug-interactions-table-substrates-inhibitors-and-inducers
View all 21 references

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Major

troleandomycin norgestimate

Applies to: troleandomycin and Tri-Sprintec (ethinyl estradiol / norgestimate)

MONITOR CLOSELY: Coadministration of clarithromycin, telithromycin, or troleandomycin may increase the plasma concentrations of drugs that are substrates of the CYP450 3A4 isoenzyme, by reducing their clearance, as these antibiotics are potent inhibitors of this isoenzyme. Many estrogen and progestin type medications are CYP450 3A4 substrates. These medications are used for a variety of purposes including, but not limited to, contraception, acne treatment, hormone replacement therapy, and appetite stimulation. When telithromycin was co-administered with oral contraceptives containing ethinyl estradiol and levonorgestrel, studies showed that the systemic concentration (AUC) of ethinyl estradiol did not change and the AUC of levonorgestrel increased by 50%. The study showed that telithromycin did not interfere with the anti-ovulatory effect of oral contraceptives containing ethinyl estradiol and levonorgestrel.

MANAGEMENT: Caution is advised if clarithromycin, telithromycin, or troleandomycin must be used concurrently with medications that undergo metabolism by CYP450 3A4. Patients should be monitored for increased adverse effects from the hormonal treatment if it must be co-administered with one of these antibiotics. Some serious side effects associated with hormonal treatment include, but are not limited to, cardiovascular disease (e.g., venous thromboembolism, myocardial infarction, and stroke); breast cancer; loss of bone mineral density; changes in mood; cholestatic jaundice; and dementia. Some of these side effects are affected by other factors such as medication dosage, concurrent medications, age, smoking status, and other disease states. If concurrent therapy with any of these antibiotics is necessary, please refer to the product labeling for more specific adverse effects to monitor for and counsel the patient and/or the patient's caregiver on the risks and benefits of concurrent therapy.

MONITOR CLOSELY: Estrogenic steroids, but not progestins, undergo enterohepatic cycling. It is possible that antimicrobials may interfere with the enterohepatic recirculation of estrogens by decreasing bacteria in the gastrointestinal tract that are responsible for regenerating parent estrogen molecules following first-pass metabolism. Most of the research regarding this possible interaction has been done with oral contraceptives; however, all estrogens appear to undergo enterohepatic recirculation so theoretically this interaction is a possibility with estrogen containing medications that are being used for alternative purposes. The risk appears to be small, and supportive data are primarily limited to anecdotal evidence from case reports and findings from uncontrolled or poorly controlled studies. Most antimicrobials, except for enzyme inducing medications like the rifamycins and possibly griseofulvin, have not been shown to significantly increase the clearance of estrogens present in combined hormonal contraceptives. It is possible that a small number of women may be more sensitive to the effects of antimicrobials on estrogen disposition in vivo, but risk factors or genetic predispositions have yet to be identified.

MANAGEMENT: If a person is using estrogen for a purpose other than contraception, it is important to note that there is a theoretical possibility of lower levels of systemic estrogen available during treatment with an antibiotic due to interference with enterohepatic cycling. These patients should be counseled to report any changes in efficacy of the hormonal product to their healthcare provider. In the case of contraception specifically, the Centers for Disease Control and Prevention do not consider most broad-spectrum antibiotics to significantly interfere with the effectiveness of combined hormonal contraception. However, the manufacturers of certain combined hormonal contraceptives and/or certain antibiotics do recommend using a back-up method of birth control for varying amounts of time; therefore, consulting the product labeling of each medication involved is advised. Some illnesses, as well as some antibiotics, may cause nausea, vomiting, and/or diarrhea. If the patient vomits within a few hours of taking an oral contraceptive pill, consult the product labeling for instructions on what to do in the event of a missed pill. Some authorities recommend a back-up method of birth control if an individual has persistent vomiting or diarrhea.

References

  1. Curtis KM, Tepper NK, Jatlaoui TC, et al. (2023) U.S. medical eligibility criteria (US MEC) for contraceptive use. https://www.cdc.gov/reproductivehealth/contraception/mmwr/mec/index.html
  2. Faculty of Sexual & Reproductive Healthcare (2023) FSRH CEU response to study: analysis of reports of unintended pregnancies associated with the combined use of non-enzyme inducing antibiotics and hormonal contraceptives - february 2021 https://www.fsrh.org/standards-and-guidance/documents/fsrh-ceu-respo
  3. Faculty of Sexual & Reproductive Healthcare (2023) FSRH CEU guidance: drug interactions with hormonal contraception (may 2022) https://www.fsrh.org/standards-and-guidance/documents/ceu-clinical-guidance-drug-interactions-with-hormonal/
  4. Simmons KB, Haddad LB, Nanda K, Curtis KM (2018) "Drug interactions between non-rifamycin antibiotics and hormonal contraception: a systemic review." Am J Obstet Gynecol, 218, 88-97.e14
  5. Zhanel GG, Siemens S, Slayter K, Mandell L (1999) "Antibiotic and oral contraceptive drug interactions: is there a need for concern?" Can J Infect Dis, 10, p. 429-33
  6. Black A, Francoeur D, Rowe T, et al. (2023) SOGC clinical practice guidelines canadian contraception consensus https://www.jogc.com/article/S1701-2163(16)30260-2/pdf
  7. Allen K (2012) "Contraception - common issues and practical suggestions." Aust Fam Physician, 41, p. 770-2
  8. (2010) "Product Information. Ketek (telithromycin)." Physicians Total Care
  9. (2009) "Product Information. Ketek (telithromycin)." Aventis Pharmaceuticals
  10. (2011) "Product Information. Ketek (telithromycine)." SANOFI BELGIUM
  11. (2023) "Product Information. Clarithromycin (clarithromycin)." Alembic Pharmaceuticals
  12. (2020) "Product Information. Clarithromycin ER (clarithromycin)." Actavis U.S. (Purepac Pharmaceutical Company)
  13. (2020) "Product Information. Act Clarithromycin XL (clarithromycin)." Actavis Pharma Company
  14. (2021) "Product Information. Biaxin BID (clarithromycin)." BGP Pharma Inc
  15. (2021) "Product Information. cLARITHROMYcin (Noumed) (cLARITHROMYcin)." Blooming Health Pty Ltd
  16. (2022) "Product Information. Klacid (cLARITHROMYcin)." Mylan Health Pty Ltd
  17. (2022) "Product Information. Klaricid IV (clarithromycin)." Viatris UK Healthcare Ltd
  18. (2023) "Product Information. Clarithromycin (clarithromycin)." Sun Pharma UK Ltd
  19. (2023) "Product Information. Clarithromycin (clarithromycin)." Milpharm Ltd
  20. (2015) "Product Information. Mycifor XL (clarithromycin)." Forum Products Ltd
  21. FDA. United States Food and Drug Administration (2023) Drug development and drug interactions: table of substrates, inhibitors and inducers. https://www.fda.gov/drugs/drug-interactions-labeling/drug-development-and-drug-interactions-table-substrates-inhibitors-and-inducers
View all 21 references

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Drug and food interactions

Moderate

norgestimate food

Applies to: Tri-Sprintec (ethinyl estradiol / norgestimate)

MONITOR: Grapefruit juice may increase the plasma concentrations of orally administered drugs that are substrates of the CYP450 3A4 isoenzyme. The proposed mechanism is inhibition of CYP450 3A4-mediated first-pass metabolism in the gut wall by certain compounds present in grapefruit. Because grapefruit juice inhibits primarily intestinal rather than hepatic CYP450 3A4, the magnitude of interaction is greatest for those drugs that undergo significant presystemic metabolism by CYP450 3A4 (i.e., drugs with low oral bioavailability). In general, the effect of grapefruit juice is concentration-, dose- and preparation-dependent, and can vary widely among brands. Certain preparations of grapefruit juice (e.g., high dose, double strength) have sometimes demonstrated potent inhibition of CYP450 3A4, while other preparations (e.g., low dose, single strength) have typically demonstrated moderate inhibition. Pharmacokinetic interactions involving grapefruit juice are also subject to a high degree of interpatient variability, thus the extent to which a given patient may be affected is difficult to predict.

MANAGEMENT: Patients who regularly consume grapefruit or grapefruit juice should be monitored for adverse effects and altered plasma concentrations of drugs that undergo significant presystemic metabolism by CYP450 3A4. Grapefruit and grapefruit juice should be avoided if an interaction is suspected. Orange juice is not expected to interact with these drugs.

References

  1. Edgar B, Bailey D, Bergstrand R, et al. (1992) "Acute effects of drinking grapefruit juice on the pharmacokinetics and dynamics on felodipine and its potential clinical relevance." Eur J Clin Pharmacol, 42, p. 313-7
  2. Jonkman JH, Sollie FA, Sauter R, Steinijans VW (1991) "The influence of caffeine on the steady-state pharmacokinetics of theophylline." Clin Pharmacol Ther, 49, p. 248-55
  3. Bailey DG, Arnold JM, Munoz C, Spence JD (1993) "Grapefruit juice--felodipine interaction: mechanism, predictability, and effect of naringin." Clin Pharmacol Ther, 53, p. 637-42
  4. Bailey DG, Arnold JMO, Spence JD (1994) "Grapefruit juice and drugs - how significant is the interaction." Clin Pharmacokinet, 26, p. 91-8
  5. Sigusch H, Hippius M, Henschel L, Kaufmann K, Hoffmann A (1994) "Influence of grapefruit juice on the pharmacokinetics of a slow release nifedipine formulation." Pharmazie, 49, p. 522-4
  6. Bailey DG, Arnold JM, Strong HA, Munoz C, Spence JD (1993) "Effect of grapefruit juice and naringin on nisoldipine pharmacokinetics." Clin Pharmacol Ther, 54, p. 589-94
  7. Yamreudeewong W, Henann NE, Fazio A, Lower DL, Cassidy TG (1995) "Drug-food interactions in clinical practice." J Fam Pract, 40, p. 376-84
  8. (1995) "Grapefruit juice interactions with drugs." Med Lett Drugs Ther, 37, p. 73-4
  9. Hukkinen SK, Varhe A, Olkkola KT, Neuvonen PJ (1995) "Plasma concentrations of triazolam are increased by concomitant ingestion of grapefruit juice." Clin Pharmacol Ther, 58, p. 127-31
  10. Min DI, Ku YM, Geraets DR, Lee HC (1996) "Effect of grapefruit juice on the pharmacokinetics and pharmacodynamics of quinidine in healthy volunteers." J Clin Pharmacol, 36, p. 469-76
  11. Majeed A, Kareem A (1996) "Effect of grapefruit juice on cyclosporine pharmacokinetics." Pediatr Nephrol, 10, p. 395
  12. Clifford CP, Adams DA, Murray S, Taylor GW, Wilkins MR, Boobis AR, Davies DS (1996) "Pharmacokinetic and cardiac effects of terfenadine after inhibition of its metabolism by grapefruit juice." Br J Clin Pharmacol, 42, p662
  13. Josefsson M, Zackrisson AL, Ahlner J (1996) "Effect of grapefruit juice on the pharmacokinetics of amlodipine in healthy volunteers." Eur J Clin Pharmacol, 51, p. 189-93
  14. Kantola T, Kivisto KT, Neuvonen PJ (1998) "Grapefruit juice greatly increases serum concentrations of lovastatin and lovastatin acid." Clin Pharmacol Ther, 63, p. 397-402
  15. Ozdemir M, Aktan Y, Boydag BS, Cingi MI, Musmul A (1998) "Interaction between grapefruit juice and diazepam in humans." Eur J Drug Metab Pharmacokinet, 23, p. 55-9
  16. Bailey DG, Malcolm J, Arnold O, Spence JD (1998) "Grapefruit juice-drug interactions." Br J Clin Pharmacol, 46, p. 101-10
  17. Bailey DG, Kreeft JH, Munoz C, Freeman DJ, Bend JR (1998) "Grapefruit juice felodipine interaction: Effect of naringin and 6',7'-dihydroxybergamottin in humans." Clin Pharmacol Ther, 64, p. 248-56
  18. Garg SK, Kumar N, Bhargava VK, Prabhakar SK (1998) "Effect of grapefruit juice on carbamazepine bioavailability in patients with epilepsy." Clin Pharmacol Ther, 64, p. 286-8
  19. Lilja JJ, Kivisto KT, Neuvonen PJ (1998) "Grapefruit juice-simvastatin interaction: Effect on serum concentrations of simvastatin, simvastatin acid, and HMG-CoA reductase inhibitors." Clin Pharmacol Ther, 64, p. 477-83
  20. Fuhr U, Maier-Bruggemann A, Blume H, et al. (1998) "Grapefruit juice increases oral nimodipine bioavailability." Int J Clin Pharmacol Ther, 36, p. 126-32
  21. Lilja JJ, Kivisto KT, Neuvonen PJ (1999) "Grapefruit juice increases serum concentrations of atorvastatin and has no effect on pravastatin." Clin Pharmacol Ther, 66, p. 118-27
  22. Eagling VA, Profit L, Back DJ (1999) "Inhibition of the CYP3A4-mediated metabolism and P-glycoprotein-mediated transport of the HIV-I protease inhibitor saquinavir by grapefruit juice components." Br J Clin Pharmacol, 48, p. 543-52
  23. Damkier P, Hansen LL, Brosen K (1999) "Effect of diclofenac, disulfiram, itraconazole, grapefruit juice and erythromycin on the pharmacokinetics of quinidine." Br J Clin Pharmacol, 48, p. 829-38
  24. Lee AJ, Chan WK, Harralson AF, Buffum J, Bui BCC (1999) "The effects of grapefruit juice on sertraline metabolism: An in vitro and in vivo study." Clin Ther, 21, p. 1890-9
  25. Dresser GK, Spence JD, Bailey DG (2000) "Pharmacokinetic-pharmacodynamic consequences and clinical relevance of cytochrome P450 3A4 inhibition." Clin Pharmacokinet, 38, p. 41-57
  26. Gunston GD, Mehta U (2000) "Potentially serious drug interactions with grapefruit juice." S Afr Med J, 90, p. 41
  27. Takanaga H, Ohnishi A, Maatsuo H, et al. (2000) "Pharmacokinetic analysis of felodipine-grapefruit juice interaction based on an irreversible enzyme inhibition model." Br J Clin Pharmacol, 49, p. 49-58
  28. Libersa CC, Brique SA, Motte KB, et al. (2000) "Dramatic inhibition of amiodarone metabolism induced by grapefruit juice." Br J Clin Pharmacol, 49, p. 373-8
  29. Bailey DG, Dresser GR, Kreeft JH, Munoz C, Freeman DJ, Bend JR (2000) "Grapefruit-felodipine interaction: Effect of unprocessed fruit and probable active ingredients." Clin Pharmacol Ther, 68, p. 468-77
  30. Zaidenstein R, Soback S, Gips M, Avni B, Dishi V, Weissgarten Y, Golik A, Scapa E (2001) "Effect of grapefruit juice on the pharmacokinetics of losartan and its active metabolite E3174 in healthy volunteers." Ther Drug Monit, 23, p. 369-73
  31. Sato J, Nakata H, Owada E, Kikuta T, Umetsu M, Ito K (1993) "Influence of usual intake of dietary caffeine on single-dose kinetics of theophylline in healthy human subjects." Eur J Clin Pharmacol, 44, p. 295-8
  32. Flanagan D (2005) "Understanding the grapefruit-drug interaction." Gen Dent, 53, 282-5; quiz 286
View all 32 references

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Minor

ethinyl estradiol food

Applies to: Tri-Sprintec (ethinyl estradiol / norgestimate)

Coadministration with grapefruit juice may increase the bioavailability of oral estrogens. The proposed mechanism is inhibition of CYP450 3A4-mediated first-pass metabolism in the gut wall induced by certain compounds present in grapefruits. In a small, randomized, crossover study, the administration of ethinyl estradiol with grapefruit juice (compared to herbal tea) increased peak plasma drug concentration (Cmax) by 37% and area under the concentration-time curve (AUC) by 28%. Based on these findings, grapefruit juice is unlikely to affect the overall safety profile of ethinyl estradiol. However, as with other drug interactions involving grapefruit juice, the pharmacokinetic alterations are subject to a high degree of interpatient variability. Also, the effect on other estrogens has not been studied.

References

  1. Weber A, Jager R, Borner A, et al. (1996) "Can grapefruit juice influence ethinyl estradiol bioavailability?" Contraception, 53, p. 41-7
  2. Schubert W, Eriksson U, Edgar B, Cullberg G, Hedner T (1995) "Flavonoids in grapefruit juice inhibit the in vitro hepatic metabolism of 17B-estradiol." Eur J Drug Metab Pharmacokinet, 20, p. 219-24

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Minor

ethinyl estradiol food

Applies to: Tri-Sprintec (ethinyl estradiol / norgestimate)

The central nervous system effects and blood levels of ethanol may be increased in patients taking oral contraceptives, although data are lacking and reports are contradictory. The mechanism may be due to enzyme inhibition. Consider counseling women about this interaction which is unpredictable.

References

  1. Hobbes J, Boutagy J, Shenfield GM (1985) "Interactions between ethanol and oral contraceptive steroids." Clin Pharmacol Ther, 38, p. 371-80

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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

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.