BREAST CANCER TREATMENT AND
SIDE EFFECTS EXAM QUESTIONS AND
ANSWERS. VERIFIED 2025/2026.
SERMs (selective estrogen receptor modulators) - ANS SERMS
Selective estrogen receptor modulators, called SERMs for short, block the effects of estrogen in
the breast tissue. SERMs work by sitting in the estrogen receptors in breast cells. If a SERM is in
the estrogen receptor, there is no room for estrogen and it can't attach to the cell. If estrogen
isn't attached to a breast cell, the cell doesn't receive estrogen's signals to grow and multiply.
Cells in other tissues in the body, such as bones and the uterus, also have estrogen receptors.
But each estrogen receptor has a slightly different structure, depending on the kind of cell it is
in. So breast cell estrogen receptors are different from bone cell estrogen receptors and both of
those estrogen receptors are different from uterine estrogen receptors. As their name says,
SERMs are "selective" - this means that a SERM that blocks estrogen's action in breast cells can
activate estrogen's action in other cells, such as bo - ANS How do SERMS works?
There are three SERMs:
-Tamoxifen
-Raloxifene
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,-Toremifene
Tamoxifen in pill form (also called tamoxifen citrate; brand name: Nolvadex) and in liquid form
(brand name: Soltamox)
Evista (chemical name: raloxifene)
Fareston (chemical name: toremifene) - ANS Which meds are the SERMS?
-women and men diagnosed with hormone-receptor-positive, early-stage breast cancer after
surgery (or possibly chemotherapy and radiation) to reduce the risk of the cancer coming back
(recurring)
-women and men diagnosed with advanced-stage or metastatic hormone-receptor-positive
disease - ANS Tamoxifen is the oldest and most-prescribed selective estrogen receptor
modulator (SERM). Tamoxifen is approved by the U.S. Food and Drug Administration (FDA) to
treat:
Since its approval in 1998, tamoxifen has been used to treat millions of women and men
diagnosed with hormone-receptor-positive breast cancer. While an aromatase inhibitor is the
first hormonal therapy medicine choice for postmenopausal women, tamoxifen is the first
choice for premenopausal women and is still a good choice for postmenopausal women who
can't take an aromatase inhibitor.
Tamoxifen can:
•*reduce the risk of breast cancer coming back by 40% to 50% in postmenopausal women and
by 30% to 50% in premenopausal women*
•*reduce the risk of a new cancer developing in the other breast by about 50%*
•shrink large, hormone-receptor-positive breast cancers before surgery
•slow or stop the growth or advanced (metastatic) hormone-receptor-positive breast cancer in
both pre- and postmenopausal women
•lower breast cancer risk in women who have a higher-than-average risk of disease but have
not been diagnosed
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,Tamoxifen - ANS Benefits of tamoxifen
-increased tumor or bone pain
-*hot flashes*
-nausea
-*fatigue*
-*mood swings*
-depression
-headache
-hair thinning
-constipation
-*dry skin*
-loss of libido - ANS Tamoxifen most common side effects
Tamoxifen's selective estrogen activation effects can cause some serious side effects, including
blood clots, stroke, and endometrial cancer. If you and your doctor are considering tamoxifen as
part of your treatment plan, tell your doctor if you smoke or have a history of blood clots or
heart attack - ANS Tamoxifen
-important side effects to educate your patient about
Strong inhibitors:
Bupropion Wellbutrin
Fluoxetine Prozac
Paroxetine Paxil
Quinidine Cardioquin
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, Thioridazine Mellaril
Perphenazine Trilafon
Pimozide Orap
Clomipramine Anafranil
Ticlopidine Ticlid
Terbinafine Kanusuk
Cinacalcet Sensipar - ANS Medicines to avoid while taking tamoxifen
In the list below, the medications under the headings "Strong Inhibitors" and "Moderate
Inhibitors" can inhibit CYP2D6 and interfere with the effectiveness of tamoxifen.
Duloxetine Cymbalta
Sertraline Zoloft
Diphenhydramine Benadryl
Amiodarone Cordarone
Trazodone Desyrel
Cimetidine Tagamet
Chlorpromazine Thorazine - ANS Tamoxifen moderate inhibitors
The American Society of Clinical Oncology recommends that:
*newly diagnosed premenopausal and perimenopausal women take 5 years of tamoxifen as
their first hormonal therapy; after this first 5 years is done, the hormonal therapy taken for the
second 5 years (for a total of 10 years of hormonal therapy) would be determined by the
woman's menopausal status:*
postmenopausal women could take another 5 years of tamoxifen or switch to an aromatase
inhibitor for 5 years
pre- and perimenopausal women would take another 5 years of tamoxifen
4 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
SIDE EFFECTS EXAM QUESTIONS AND
ANSWERS. VERIFIED 2025/2026.
SERMs (selective estrogen receptor modulators) - ANS SERMS
Selective estrogen receptor modulators, called SERMs for short, block the effects of estrogen in
the breast tissue. SERMs work by sitting in the estrogen receptors in breast cells. If a SERM is in
the estrogen receptor, there is no room for estrogen and it can't attach to the cell. If estrogen
isn't attached to a breast cell, the cell doesn't receive estrogen's signals to grow and multiply.
Cells in other tissues in the body, such as bones and the uterus, also have estrogen receptors.
But each estrogen receptor has a slightly different structure, depending on the kind of cell it is
in. So breast cell estrogen receptors are different from bone cell estrogen receptors and both of
those estrogen receptors are different from uterine estrogen receptors. As their name says,
SERMs are "selective" - this means that a SERM that blocks estrogen's action in breast cells can
activate estrogen's action in other cells, such as bo - ANS How do SERMS works?
There are three SERMs:
-Tamoxifen
-Raloxifene
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,-Toremifene
Tamoxifen in pill form (also called tamoxifen citrate; brand name: Nolvadex) and in liquid form
(brand name: Soltamox)
Evista (chemical name: raloxifene)
Fareston (chemical name: toremifene) - ANS Which meds are the SERMS?
-women and men diagnosed with hormone-receptor-positive, early-stage breast cancer after
surgery (or possibly chemotherapy and radiation) to reduce the risk of the cancer coming back
(recurring)
-women and men diagnosed with advanced-stage or metastatic hormone-receptor-positive
disease - ANS Tamoxifen is the oldest and most-prescribed selective estrogen receptor
modulator (SERM). Tamoxifen is approved by the U.S. Food and Drug Administration (FDA) to
treat:
Since its approval in 1998, tamoxifen has been used to treat millions of women and men
diagnosed with hormone-receptor-positive breast cancer. While an aromatase inhibitor is the
first hormonal therapy medicine choice for postmenopausal women, tamoxifen is the first
choice for premenopausal women and is still a good choice for postmenopausal women who
can't take an aromatase inhibitor.
Tamoxifen can:
•*reduce the risk of breast cancer coming back by 40% to 50% in postmenopausal women and
by 30% to 50% in premenopausal women*
•*reduce the risk of a new cancer developing in the other breast by about 50%*
•shrink large, hormone-receptor-positive breast cancers before surgery
•slow or stop the growth or advanced (metastatic) hormone-receptor-positive breast cancer in
both pre- and postmenopausal women
•lower breast cancer risk in women who have a higher-than-average risk of disease but have
not been diagnosed
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,Tamoxifen - ANS Benefits of tamoxifen
-increased tumor or bone pain
-*hot flashes*
-nausea
-*fatigue*
-*mood swings*
-depression
-headache
-hair thinning
-constipation
-*dry skin*
-loss of libido - ANS Tamoxifen most common side effects
Tamoxifen's selective estrogen activation effects can cause some serious side effects, including
blood clots, stroke, and endometrial cancer. If you and your doctor are considering tamoxifen as
part of your treatment plan, tell your doctor if you smoke or have a history of blood clots or
heart attack - ANS Tamoxifen
-important side effects to educate your patient about
Strong inhibitors:
Bupropion Wellbutrin
Fluoxetine Prozac
Paroxetine Paxil
Quinidine Cardioquin
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, Thioridazine Mellaril
Perphenazine Trilafon
Pimozide Orap
Clomipramine Anafranil
Ticlopidine Ticlid
Terbinafine Kanusuk
Cinacalcet Sensipar - ANS Medicines to avoid while taking tamoxifen
In the list below, the medications under the headings "Strong Inhibitors" and "Moderate
Inhibitors" can inhibit CYP2D6 and interfere with the effectiveness of tamoxifen.
Duloxetine Cymbalta
Sertraline Zoloft
Diphenhydramine Benadryl
Amiodarone Cordarone
Trazodone Desyrel
Cimetidine Tagamet
Chlorpromazine Thorazine - ANS Tamoxifen moderate inhibitors
The American Society of Clinical Oncology recommends that:
*newly diagnosed premenopausal and perimenopausal women take 5 years of tamoxifen as
their first hormonal therapy; after this first 5 years is done, the hormonal therapy taken for the
second 5 years (for a total of 10 years of hormonal therapy) would be determined by the
woman's menopausal status:*
postmenopausal women could take another 5 years of tamoxifen or switch to an aromatase
inhibitor for 5 years
pre- and perimenopausal women would take another 5 years of tamoxifen
4 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
