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Review: Herceptin and Letrozole

This review analyzes the effectiveness and drug interactions between Herceptin and Letrozole. It is created by eHealthMe based on reports of 531 people who take the same drugs from FDA and social media, and is updated regularly.

Stay connected: join a mobile support group for people who take Herceptin and Letrozole >>>

What are the drugs

Herceptin (latest outcomes from 10,442 users) has active ingredients of trastuzumab. It is often used in breast cancer.

Letrozole (latest outcomes from 1,821 users) has active ingredients of letrozole. It is often used in breast cancer.

On Jul, 6, 2014: 531 people who take Herceptin, Letrozole are studied

Herceptin, Letrozole outcomes

Drug combinations in study:
- Herceptin (trastuzumab)
- Letrozole (letrozole)

Drug effectiveness over time :

< 1 month1 - 6 months6 - 12 months1 - 2 years2 - 5 years5 - 10 years10+ yearsnot specified
Herceptin is effectiven/an/a0.00%
(0 of 1 people)
(1 of 1 people)
(1 of 1 people)
Letrozole is effectiven/an/a50.00%
(1 of 2 people)
(1 of 1 people)

Most common drug interactions over time * :

< 1 month1 - 6 months6 - 12 months1 - 2 years2 - 5 years5 - 10 years10+ yearsnot specified
PruritusArthralgiaPyrexiaDyspnoeaOsteomyelitisNeoplasm Malignantn/aPain
FatigueAlopeciaChest PainPleural EffusionSwellingHepatic LesionOsteonecrosis Of Jaw
CoughRash PruriticDyspnoeaDecreased AppetiteErythemaMalignant Peritoneal NeoplasmAnaemia
ErythemaRadiation PneumonitisCoughDisease ProgressionPainBlood Alkaline Phosphatase IncreasedAnxiety
Infusion Related ReactionPyrexiaOsteomyelitisAcneMetastases To LungBlood Lactate Dehydrogenase IncreasedOsteomyelitis
Rash ErythematousLiver AbscessAlopeciaDrug EruptionPleural EffusionGamma-glutamyltransferase IncreasedBone Disorder
Tumour Lysis SyndromeDyspnoeaInflammationTachycardiaDysphagiaAlanine Aminotransferase IncreasedPleural Effusion
Interstitial Lung DiseaseMalignant Pleural EffusionCompression FractureMetastases To LiverCapillary Leak SyndromeRash PruriticPrimary Sequestrum
Metastases To Central Nervous SystemBlood Urea IncreasedAbdominal PainHypertensionExostosisEndocrine NeoplasmTooth Disorder
Nephropathy ToxicOsteonecrosisGingival PainOrthopnoeaFamily StressHepatitis CholestaticFatigue

Drug effectiveness by gender :

Herceptin is effective66.67%
(2 of 3 people)
Letrozole is effective66.67%
(2 of 3 people)

Most common drug interactions by gender * :

Osteonecrosis Of Jaw
Bone Disorder
Metastases To Bone
Primary Sequestrum

Drug effectiveness by age :

Herceptin is effectiven/an/an/an/an/a100.00%
(2 of 2 people)
(0 of 1 people)
Letrozole is effectiven/an/an/an/an/a100.00%
(2 of 2 people)
(0 of 1 people)

Most common drug interactions by age * :

n/an/an/an/aBreast Cancer FemaleBone DisorderAnxietyFatigue
Biopsy Breast AbnormalAnxietyPainAlopecia
AnaemiaAnaemiaOsteonecrosis Of JawOsteonecrosis
Intervertebral Disc ProtrusionPainOsteomyelitisArthralgia
OsteopeniaOsteonecrosis Of JawAnaemiaPain
Ovarian CystTooth ExtractionMetastases To BonePain In Extremity
ConjunctivitisInjuryGait DisturbanceMetastases To Central Nervous System
AlopeciaTooth DisorderInflammationRash Pruritic
AcneOsteomyelitisBack PainPrimary Sequestrum
Eyelid OedemaPain In JawImpaired HealingPyrexia

* Some reports may have incomplete information.

How to use the study: print a copy of the study and bring it to your health teams to ensure drug risks and benefits are fully discussed and understood.

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Complete drug side effects:

On eHealthMe, Herceptin (trastuzumab) is often used to treat breast cancer. Letrozole (letrozole) is often used to treat breast cancer. Find out below the conditions the drugs are used for, how effective they are, and any alternative drugs that you can use to treat those same conditions.

What is the drug used for and how effective is it:

Other drugs that are used to treat the same conditions:

NOTE: The study is based on active ingredients. Other drugs that have the same active ingredients are also considered.

WARNING: Please DO NOT STOP MEDICATIONS without first consulting a physician since doing so could be hazardous to your health.

DISCLAIMER: All material available on is for informational purposes only, and is not a substitute for medical advice, diagnosis, or treatment provided by a qualified healthcare provider. All information is observation-only, and has not been supported by scientific studies or clinical trials unless otherwise stated. Different individuals may respond to medication in different ways. Every effort has been made to ensure that all information is accurate, up-to-date, and complete, but no guarantee is made to that effect. The use of the eHealthMe site and its content is at your own risk.

You may report adverse side effects to the FDA at or 1-800-FDA-1088 (1-800-332-1088).

If you use this eHealthMe study on publication, please acknowledge it with a citation: study title, URL, accessed date.

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