Estradiol with Octreotide Interaction Details

Brand Names Associated with Estradiol

Brand Names Associated with Octreotide

Medical Content Editor Dr. Brian Staiger, PharmD
Last updated Nov 13, 2023

Interaction Effect

Decreased bioavailability and decreased efficacy of combined oral contraceptives or increased breakthrough bleeding

Interaction Summary

Concomitant use of octreotide and combined oral contraceptives (COCs) may decrease bioavailability and decrease efficacy of COCs or increase breakthrough bleeding. In a single-dose study, coadministration of levonorgestrel 0.3 mg and octreotide 40 mg orally significantly decreased levonorgestrel AUC and Cmax by 24% and 38%, respectively; coadministration of ethinyl estradiol 0.06 mg and octreotide 40 mg orally did not significantly change ethinyl estradiol AUC or Cmax. If concomitant use is required, an alternative non-hormonal method of contraception or a back-up method should be used.

Severity

Major

Onset

Unspecified

Evidence

Theoretical

How To Manage Interaction

Concomitant use of octreotide and combined oral contraceptives (COCs) may decrease bioavailability and decrease efficacy of COCs or increase breakthrough bleeding. If concomitant use is required, an alternative non-hormonal method of contraception or a back-up method should be used.

Mechanism Of Interaction

Unknown

Literature Reports

A) In a single-dose study, coadministration of levonorgestrel 0.3 mg and octreotide 40 mg orally significantly decreased levonorgestrel AUC by 24% (mean ratio, 0.76; 90% CI, 0.67 to 0.86) and Cmax by 38% (mean ratio, 0.62; 90% CI, 0.54 to 0.71). Coadministration of ethinyl estradiol 0.06 mg and octreotide 40 mg orally did not significantly change ethinyl estradiol AUC (mean ratio, 0.94; 90% CI, 0.86 to 1.03) or Cmax (mean ratio, 0.92; 90% CI, 0.83 to 1.01) .

Estradiol Overview

• Estrogen is used to treat hot flushes ('hot flashes'; sudden strong feelings of heat and sweating) in women who are experiencing menopause ('change of life', the end of monthly menstrual periods). Some brands of estrogen are also used to treat vaginal dryness, itching, or burning, or to prevent osteoporosis (a condition in which the bones become thin and weak and break easily) in women who are experiencing or have experienced menopause. However, women who need a medication only to treat vaginal dryness or only to prevent osteoporosis should consider a different treatment. Some brands of estrogen are also to relieve symptoms of low estrogen in young women who do not produce enough estrogen naturally. Some brands of estrogen are also used to relieve the symptoms of certain types of breast and prostate (a male reproductive gland) cancer. Estrogen is in a class of medications called hormones. It works by replacing estrogen that is normally produced by the body.

Octreotide Overview

• Octreotide is used to treat acromegaly (condition in which the body produces too much growth hormone, causing enlargement of the hands, feet, and facial features; joint pain; and other symptoms) in people who have been treated successfully with octreotide injection (Sandostatin) or lanreotide injection (Somatuline). Octreotide is in a class of medications called octapeptides. It works by decreasing the amounts of certain natural substances produced by the body.

Return To Our Drug Interaction Homepage

Feedback, Question Or Comment About This Information?

Definitions

Severity Categories

Contraindicated

These drugs, generally, should not be used together simultaneously due to the high risk of severe adverse effects. Combining these medications can lead to dangerous health outcomes and should be strictly avoided unless otherwise instructed by your provider.

Major

This interaction could result in very serious and potentially life-threatening consequences. If you are taking this drug combination, it is very important to be under close medical supervision to minimize severe side effects and ensure your safety. It may be necessary to change a medication or dosage to prevent harm.

Moderate

This interaction has the potential to worsen your medical condition or alter the effectiveness of your treatment. It's important that you are monitored closely and you potentially may need to make adjustments in your treatment plan or drug dosage to maintain optimal health.

Minor

While this interaction is unlikely to cause significant problems, it could intensify side effects or reduce the effectiveness of one or both medications. Monitoring for changes in symptoms and your condition is recommended, and adjustments may be made if needed to manage any increased or more pronounced side effects.

Onset

Rapid: Onset of drug interaction typically occurs within 24 hours of co-administration.

Delayed: Onset of drug interaction typically occurs more than 24 hours after co-administration.

Evidence

Level of documentation of the interaction.

Established: The interaction is documented and substantiated in peer-reviewed medical literature.

Theoretical: This interaction is not fully supported by current medical evidence or well-documented sources, but it is based on known drug mechanisms, drug effects, and other relevant information.

How To Manage The Interaction

Provides a detailed discussion on how patients and clinicians can approach the identified drug interaction as well as offers guidance on what to expect and strategies to potentially mitigate the effects of the interaction. This may include recommendations on adjusting medication dosages, altering the timing of drug administration, or closely monitoring for specific symptoms.

It's important to note that all medical situations are unique, and management approaches should be tailored to individual circumstances. Patients should always consult their healthcare provider for personalized advice and guidance on managing drug interactions effectively.

Mechanism Of Interaction

The theorized or clinically determined reason (i.e., mechanism) why the drug-drug interaction occurs.

Disclaimer: The information provided on this page is for informational purposes only and should not be considered medical advice. Always consult with a qualified healthcare professional regarding your specific circumstances and medical conditions.

Where Does Our Information Come From?

Information for our drug interactions is compiled from several drug compendia, including:

• Gold Standard Drug Database
• Micromedex
• Lexicomp
• DrugBank

The prescribing information for each drug, as published on DailyMED, is also used. 

Individual drug-drug interaction detail pages contain references specific to that interaction. You can click on the reference number within brackets '[]' to see what reference was utilized.

The information posted is fact-checked by HelloPharmacist clinicians and reviewed quarterly.