(strep toe ZOE sin)
Trade names: Zanosar®
Chemocare.com uses generic names in all descriptions of drugs. Zanosar is the trade
name for streptozocin. In some cases, health care professionals may use the trade
name zanosar when referring to the generic drug name streptozocin.
Drug type: Streptozocin is an anti-cancer ("antineoplastic"
or "cytotoxic") chemotherapy drug. This medication is classified as an "alkylating
agent." (For more detail, see "How this drug works" section below).
What this drug is used for:
- Treatment of islet cell cancer of the pancreas
- Carcinoid tumor and syndrome
Note: If a drug has been approved for one use, physicians
may elect to use this same drug for other problems if they believe it may be helpful.
How this drug is given:
- As an infusion into the vein (intravenous, IV).
- Streptozocin is a vesicant. A vesicant is a chemical that causes extensive
tissue damage and blistering if it escapes from the vein. The nurse or doctor
who gives this drug must be carefully trained. If you notice pain, redness
or swelling at the IV site while you are receiving streptozocin, alert your health
care professional immediately.
- The amount of streptozocin that you will receive depends on many factors, including
your height and weight, your general health or other health problems, and the type
of cancer or condition being treated. Your doctor will determine your dose
Important things to remember about the side effects of streptozocin:
- Most people do not experience all of the side effects listed.
- Side effects
are often predictable in terms of their onset and duration.
- Side effects are almost always reversible and will go away after treatment is complete.
- There are many options to help minimize or prevent side effects.
- There is no relationship between the presence or severity of side effects and the
effectiveness of the medication.
The following side effects are common (occurring in greater than 30%) for
patients taking streptozocin:
- Nausea and vomiting. This may begin from 1 to 3 hours after you receive the
injection, and last up to 12 hours. You will be given anti-nausea medication prior
to receiving this drug.
- This drug may affect your kidneys. (see kidney problems, nephrotoxicity) Your kidney
function will be closely monitored.
These side effects are less common side effects (occurring in about
10-29%) of patients receiving streptozocin:
- Low blood sugar. (see blood test abnormalities). This is
an uncommon side effect, however if you are on medication for diabetes, some adjustment
to your medications may be needed.
- Low white blood cell (WBC), hemoglobin (Hgb) and platelet counts may occur, although
uncommon. This may put you at risk for infections, tiredness, and bleeding. You
can expect bone marrow depression (decreased blood counts) to occur.
Nadir: Meaning low point, nadir is the point in time between chemotherapy
cycles in which you experience low blood counts.
Onset: 7 days
Nadir: 14 days
Recovery: 21 days
- Increases in blood tests measuring liver function. These return to normal
once treatment is discontinued. (see liver problems).
There is a slight risk of developing a blood cancer such as leukemia after taking
streptozocin. Talk to your doctor about this risk.
Not all side effects are listed above. Some that are rare (occurring in less than
10% of patients) are not listed here. However, you should always inform your
health care provider if you experience any unusual symptoms.
When to contact your doctor or health care provider:
Contact your health care provider immediately, day or night, if you
should experience any of the following symptoms:
- Fever of 100.4° F (38° C) or higher, chills (possible signs of infection)
The following symptoms require medical attention, but are not an emergency.
Contact your health care provider within 24 hours of noticing any of the
- Nausea (interferes with ability to eat and unrelieved with prescribed medication)
Vomiting (vomiting more than 4-5 times in a 24 hour period)
- Diarrhea (4-6 episodes
in a 24-hour period)
- Unusual bleeding or bruising
- Black or tarry stools,
or blood in your stools or urine
- Extreme fatigue (unable to carry on self-care
- No urination in a 12 hour period. Swelling of the feet or
ankles, sudden weight gain
- Yellowing of the skin or eyes
- Signs of infection
such as redness or swelling, pain on swallowing, coughing up mucous, or painful
- Unable to eat or drink for 24 hours or have signs of dehydration: tiredness, thirst,
dry mouth, dark and decrease amount of urine, or dizziness.
- Increased thirst, drinking and urination, waking up at night to urinate.
Always inform your health care provider if you experience any unusual symptoms.
- Before starting streptozocin treatment, make sure you tell your doctor about any
other medications you are taking (including prescription, over-the-counter, vitamins,
herbal remedies, etc.). Do not take aspirin, or products containing
aspirin unless your doctor specifically permits this.
- Do not receive any kind of immunization or vaccination without your doctor's approval
while taking streptozocin.
- Inform your health care professional if you are pregnant or may be pregnant prior
to starting this treatment. Pregnancy category D (streptozocin may be hazardous
to the fetus. Women who are pregnant or become pregnant must be advised of
the potential hazard to the fetus).
- For both men and women: Do not conceive a child (get pregnant) while taking streptozocin.
Barrier methods of contraception, such as condoms, are recommended. Discuss with
your doctor when you may safely become pregnant or conceive a child after therapy.
- Do not breast feed while taking this medication.
- Apply ice if you have any pain, redness or swelling at the IV site, and notify your
- Drink at least two to three quarts of fluid every 24 hours, unless you are instructed
- Wash your hands often.
- To help treat/prevent mouth sores, use a soft toothbrush, and rinse three times
a day with 1/2 to 1 teaspoon of baking soda and/or 1/2 to 1 teaspoon of salt mixed
with 8 ounces of water.
- Use an electric razor and a soft toothbrush to minimize bleeding.
- Avoid contact sports or activities that could cause injury.
- To reduce nausea, take anti-nausea medications as prescribed by your doctor, and
eat small, frequent meals.
- You may experience drowsiness or dizziness; avoid driving or engaging in tasks that
require alertness until your response to the drug is known.
- Avoid sun exposure. Wear SPF 15 (or higher) sunblock and protective clothing.
- In general, drinking alcoholic beverages should be kept to a minimum or avoided
completely. You should discuss this with your doctor.
- Get plenty of rest.
- Maintain good nutrition.
- If you experience symptoms or side effects, be sure to discuss them with your health
care team. They can prescribe medications and/or offer other suggestions that
are effective in managing such problems.
Monitoring and testing:
You will be checked regularly by your health care professional while you are taking
streptozocin, to monitor side effects and check your response to therapy.
Periodic blood work to monitor your complete blood count (CBC) as well as the function
of other organs (such as your kidneys and liver) will also be ordered by your doctor.
How this drug works:
Cancerous tumors are characterized by cell division, which is no longer controlled
as it is in normal tissue. "Normal" cells stop dividing when they come
into contact with like cells, a mechanism known as contact inhibition. Cancerous
cells lose this ability. Cancer cells no longer have the normal checks and
balances in place that control and limit cell division. The process of cell
division, whether normal or cancerous cells, is through the cell cycle. The
cell cycle goes from the resting phase, through active growing phases, and then
to mitosis (division).
The ability of chemotherapy to kill cancer cells depends on its ability to halt
cell division. Usually, the drugs work by damaging the RNA or DNA that tells
the cell how to copy itself in division. If the cells are unable to divide,
they die. The faster the cells are dividing, the more likely it is that chemotherapy
will kill the cells, causing the tumor to shrink. They also induce cell suicide
(self-death or apoptosis).
Chemotherapy drugs that affect cells only when they are dividing are called cell-cycle
specific. Chemotherapy drugs that affect cells when they are at rest are called
cell-cycle non-specific. The scheduling of chemotherapy is set based on the
type of cells, rate at which they divide, and the time at which a given drug is
likely to be effective. This is why chemotherapy is typically given in cycles.
Chemotherapy is most effective at killing cells that are rapidly dividing.
Unfortunately, chemotherapy does not know the difference between the cancerous cells
and the normal cells. The "normal" cells will grow back and be healthy but in the
meantime, side effects occur. The "normal" cells most commonly affected by
chemotherapy are the blood cells, the cells in the mouth, stomach and bowel, and
the hair follicles; resulting in low blood counts, mouth sores, nausea, diarrhea,
and/or hair loss. Different drugs may affect different parts of the body.
Streptozocin is classified as an alkylating agent. Alkylating agents are most
active in the resting phase of the cell. These drugs are cell cycle non-specific.
There are several types of alkylating agents.
- Mustard gas derivatives: Mechlorethamine, Cyclophosphamide,
Chlorambucil, Melphalan, and Ifosfamide.
- Ethylenimines: Thiotepa and Hexamethylmelamine.
- Alkylsulfonates: Busulfan.
- Hydrazines and Triazines: Altretamine, Procarbazine, Dacarbazine
- Nitrosureas: Carmustine, Lomustine and Streptozocin.
Nitrosureas are unique because, unlike most chemotherapy, they can cross the blood-brain
barrier. They can be useful in treating brain tumors.
- Metal salts: Carboplatin, Cisplatin, and Oxaliplatin.
Note: We strongly encourage you to talk with your health
care professional about your specific medical condition and treatments. The information
contained in this website is meant to be helpful and educational, but is not a substitute
for medical advice.