Esterified estrogens and methyltestosterone

Take exactly as prescribed by your doctor. Do not take in larger or smaller amounts or for longer than recommended. Follow the directions on your prescription label.

This medication is usually taken in a cycle of 3 weeks on and 1 week off. Follow your doctor's instructions.

Have regular physical exams and self-examine your breasts for lumps on a monthly basis while using esterified estrogens and methyltestosterone.

If you need medical tests or surgery, or if you will be on bed rest, you may need to stop using this medication for a short time. Any doctor or surgeon who treats you should know that you are taking esterified estrogens and methyltestosterone.

Store at room temperature away from moisture and heat.

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

Overdose symptoms may include nausea, vomiting, or vaginal bleeding.

Esterified estrogens and methyltestosterone combination is used to treat the symptoms of menopause in patients who did not get relief after being treated with estrogens alone. These symptoms may include a feeling of heat, sweating, and warmth in the face, neck, or chest ("hot flashes"); and dryness, burning, and itching in the vagina.

Esterified estrogens are a man-made mixture of estrogens. Estrogen is a hormone that is produced by the body in greater amounts in females. It is necessary for normal sexual development of the female and for regulation of the menstrual cycle during the childbearing years. Methyltestosterone is a man-made form of testosterone, a hormone that is produced by the body in greater amounts in males and small amounts in females. Menopause symptoms occur when the hormone balance changes in the female body. This combination of hormones will relieve the symptoms of menopause by adding more hormones to the body.

esterified estrogens and methyltestosterone is available only with your doctor's prescription.

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur:

• Absent, missed, or irregular menstrual periods
• acne or oily skin
• decreased breast size
• enlarging clitoris
• hoarseness or deepening of the voice
• menstrual changes
• stopping of menstrual bleeding
• unnatural hair growth or loss

• Continuing nausea
• cough
• dark-colored urine
• difficulty with swallowing
• dizziness
• fast heartbeat
• fever
• hives
• itching
• light-colored stools
• loss of appetite
• puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
• purple or red-colored spots on the body or inside the mouth or nose
• shortness of breath
• skin rash
• sore throat
• tightness in the chest
• unusual tiredness or weakness
• vomiting
• wheezing

• Abdominal or stomach bloating, cramps, or pain
• anxiety
• bleeding from gums or nose
• blistering, peeling, or loosening of the skin
• bloating
• bloody or cloudy urine
• burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
• change in vaginal discharge
• changes in skin color, pain, or tenderness
• chest pain or discomfort
• chills
• clay-colored stools
• clear or bloody discharge from nipple
• confusion
• constipation
• convulsions
• darkening of urine
• decrease in amount of urine
• diarrhea
• difficult, burning, or painful urination
• difficulty with breathing
• difficulty with moving
• difficulty with speaking
• dimpling of the breast skin
• dizziness or lightheadedness
• double vision
• eye pain
• fainting
• fever
• fluid-filled skin blisters
• frequent urge to urinate
• headache
• heavy bleeding
• inability to move the arms, legs, or facial muscles
• inability to speak
• indigestion
• inverted nipple
• irregular heartbeats
• itching of the vagina or genital area
• joint or muscle pain
• large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
• light-colored stools
• loss of appetite
• lump in the breast or under the arm
• mood or mental changes
• muscle cramps in the hands, arms, feet, legs, or face
• muscle pain or stiffness
• nausea
• noisy, rattling breathing
• numbness and tingling around the mouth, fingertips, or feet
• pain
• pain during sexual intercourse
• pain in the ankles or knees
• pain or discomfort in the arms, jaw, back, or neck
• pain or feeling of pressure in pelvis
• painful, red lumps under the skin, mostly on the legs
• pains in the stomach, side, or abdomen, possibly radiating to the back
• pelvic pain
• persistent crusting or scaling of the nipple
• pinpoint red or purple spots on the skin
• poor insight and judgment problems with memory or speech
• red, irritated eyes
• redness or swelling of the breast
• ringing in the ears
• sensitivity to the sun
• shortness of breath
• skin thinness
• slow speech
• sore on the skin of the breast that does not heal
• sore throat
• sores, ulcers, or white spots in the mouth or on the lips
• stomach pain
• sudden shortness of breath or troubled breathing
• sweating
• swelling
• swelling of the fingers, hands, feet, or lower legs
• tenderness of the breast
• thick, white curd-like vaginal discharge without odor or with mild odor
• tiredness
• tremor
• trouble recognizing objects
• trouble thinking and planning
• trouble walking
• troubled breathing at rest
• unexpected or excess milk flow from breasts
• unpleasant breath odor
• vaginal bleeding
• vision changes
• vomiting of blood
• weakness
• weight gain
• yellow eyes or skin

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

• Blemishes on the skin
• brown, blotchy spots on the exposed skin
• decreased interest in sexual intercourse
• depression
• headache, severe and throbbing
• inability to have or keep an erection
• increase or decrease in weight
• increased hair growth, especially on the face
• increased in sexual ability, desire, drive, or performance
• increased interest in sexual intercourse
• irritability
• leg cramps
• loss in sexual ability, desire, drive, or performance
• loss of hair
• mental depression
• pimples
• redness of the skin
• swelling or inflammation of the mouth
• twitching, uncontrolled movements of the tongue, lips, face, arms, or legs

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

Estrogens

Estrogens are important in the development and maintenance of the female reproductive system and secondary sex characteristics. They promote growth and development of the vagina, uterus, and fallopian tubes, and enlargement of the breasts. Indirectly, they contribute to the shaping of the skeleton, maintenance of tone and elasticity of urogenital structures, changes in the epiphyses of the long bones that allow for the pubertal growth spurt and its termination, growth of axillary and pubic hair, and pigmentation of the nipples and genitals. Decline of estrogenic activity at the end of the menstrual cycle can bring on menstruation, although the cessation of progesterone secretion is the most important factor in the mature ovulatory cycle. However, in the preovulatory or nonovulatory cycle, estrogen is the primary determinant in the onset of menstruation. Estrogens also affect the release of pituitary gonadotropins. The pharmacologic effects of esterified estrogens are similar to those of endogenous estrogens. They are soluble in water and are well absorbed from the gastrointestinal tract.

In responsive tissues (female genital organs, breasts, hypothalamus, pituitary) estrogens enter the cell and are transported into the nucleus. As a result of estrogen action, specific RNA and protein synthesis occurs.

Estrogen Pharmacokinetics

Metabolism and inactivation occur primarily in the liver. Some estrogens are excreted into the bile; however they are reabsorbed from the intestine and returned to the liver through the portal venous system. Water soluble esterified estrogens are strongly acidic and are ionized in body fluids, which favor excretion through the kidneys since tubular reabsorption is minimal.

Androgens

Endogenous androgens are responsible for the normal growth and development of the male sex organs and for maintenance of secondary sex characteristics. These effects include the growth and maturation of prostate, seminal vesicles, penis, and scrotum; the development of male hair distribution, such as beard, pubic, chest and axillary hair, laryngeal enlargement, vocal cord thickening, alterations in body musculature, and fat distribution. Drugs in this class also cause retention of nitrogen, sodium, potassium, phosphorus, and decreased urinary excretion of calcium. Androgens have been reported to increase protein anabolism and decrease protein catabolism. Nitrogen balance is improved only when there is sufficient intake of calories and protein. Androgens are responsible for the growth spurt of adolescence and for the eventual termination of linear growth centers. In children, exogenous androgens accelerate linear growth rates, but may cause a disproportionate advancement in bone maturation. Use over long periods may result in fusion of the epiphyseal growth centers and termination of growth process. Androgens have been reported to stimulate the production of red blood cells by enhancing the production of erythropoietic stimulating factor.

Androgen Pharmacokinetics

Testosterone given orally is metabolized by the gut and 44 percent is cleared by the liver in the first pass. Oral doses as high as 400 mg per day are needed to achieve clinically effective blood levels for full replacement therapy. The synthetic androgens (methyltestosterone and fluoxymesterone) are less extensively metabolized by the liver and have longer half-lives. They are more suitable than testosterone for oral administration.

Testosterone in plasma is 98 percent bound to a specific testosterone estradiol binding globulin, and about 2 percent is free. Generally, the amount of this sex-hormone binding globulin in the plasma will determine the distribution of testosterone between free and bound forms, and the free testosterone concentration will determine its half-life.

About 90 percent of a dose of testosterone is excreted in the urine as glucuronic and sulfuric acid conjugates of testosterone and its metabolites; about 6 percent of a dose is excreted in the feces, mostly in the unconjugated form. Inactivation of testosterone occurs primarily in the liver. Testosterone is metabolized to various 17-keto steroids through two different pathways. There are considerable variations of the half-life of testosterone as reported in the literature, ranging from 10 to 100 minutes.

In many tissues the activity of testosterone appears to depend on reduction to dihydrotestosterone, which binds to cytosol receptor proteins. The steroid-receptor complex is transported to the nucleus where it initiates transcription events and cellular changes related to androgen action.

Associated with

A. General Precautions

1.       A complete medical and family history should be taken prior to the initiation of any estrogen therapy. The pretreatment and periodic physical examinations should include special reference to blood pressure, breasts, abdomen, and pelvic organs, and should include a Papanicolaou smear. As a general rule, estrogen should not be prescribed for longer than one year without another physical examination being performed.

2.       Fluid retention– Because estrogens may cause some degree of fluid retention, conditions which might be influenced by this factor such as asthma, epilepsy, migraine, and cardiac or renal dysfunction, require careful observation.

3.       Certain patients may develop undesirable manifestations of excessive estrogenic stimulation, such as abnormal or excessive uterine bleeding, mastodynia, etc.

4.       Oral contraceptives appear to be associated with an increased incidence of mental depression.24 Although it is not clear whether this is due to the estrogenic or progestogenic component of the contraceptive, patients with a history of depression should be carefully observed.

5.       Preexisting uterine leiomyomata may increase in size during estrogen use.

6.       The pathologist should be advised of estrogen therapy when relevant specimens are submitted.

7.       Patients with a past history of jaundice during pregnancy have an increased risk of recurrence of jaundice while receiving estrogen-containing oral contraceptive therapy. If jaundice develops in any patient receiving estrogen, the medication should be discontinued while the cause is investigated.

8.       Estrogens may be poorly metabolized in patients with impaired liver function and they should be administered with caution in such patients.

9.       Because estrogens influence the metabolism of calcium and phosphorus, they should be used with caution in patients with metabolic bone diseases that are associated with hypercalcemia or in patients with renal insufficiency.

10.       Because of the effects of estrogens on epiphyseal closure, they should be used judiciously in young patients in whom bone growth is not complete.

11.       Certain endocrine and liver function tests may be affected by estrogen-containing oral contraceptives. The following similar changes may be expected with larger doses of estrogen:
a.       Increased sulfobromophthalein retention.
b.       Increased prothrombin and factors VII, VIII, IX and X; decreased antithrombin 3: increased norepinephrine induced platelet aggregability.
c.       Increased thyroid binding globulin (TBG) leading to increased circulating total thyroid hormone, as measured by PBI, T4 by column, or T4 by radioimmunoassay. Free T3 resin uptakes is decreased, reflecting the elevated TBG; free T4 concentration is unaltered.
d.       Impaired glucose tolerance.
e.       Decreased pregnanediol excretion.
f.       Reduced response to metyrapone test.
g.       Reduced serum folate concentration.
h.       Increased serum triglyceride and phospholipid concentration.

B. Information for the Patient

See Patient Package Insert.

C. Pregnancy Category X

See CONTRAINDICATIONS and Boxed WARNING.

D. Nursing Mothers

As a general principle, the administration of any drug to nursing mothers should be done only when clearly necessary since many drugs are excreted in human milk.

Associated with Methyltestosterone

A. General Precautions

1.       Women should be observed for signs of virilization (deepening of the voice, hirsutism, acne, clitoromegaly, and menstrual irregularities). Discontinuation of drug therapy at the time of evidence of mild virilism is necessary to prevent irreversible virilization. Such virilization is usual following androgen use at high doses.

2.       Prolonged dosage of androgen may result in sodium and fluid retention. This may present a problem, especially in patients with compromised cardiac reserve or renal disease.

3.       Hypersensitivity may occur rarely.

4.       PBI may be decreased in patients taking androgens.

5.       Hypercalcemia may occur. If this does occur, the drug should be discontinued.

B. Information for the Patient

The physician should instruct patients to report any of the following side effects of androgens:

Women: Hoarseness, acne, changes in menstrual periods, or more hair on the face.

All Patients: Any nausea, vomiting, changes in skin color of ankle swelling.

C. Laboratory Tests

1.       Women with disseminated breast carcinoma should have frequent determination of urine and serum calcium levels during the course of androgen therapy (see WARNINGS).

2.       Because of the hepatotoxicity associated with the use of 17-alpha-alkylated androgens, liver function tests should be obtained periodically.

3.       Hemoglobin and hematocrit should be checked periodically for polycythemia in patients who are receiving high doses of androgens

.

D. Drug Interactions

1.       Anticoagulants C-17 substituted derivatives of testosterone, such as methandrostenolone, have been reported to decrease the anticoagulant requirements of patients receiving oral anticoagulants. Patients receiving oral anticoagulant therapy require close monitoring, especially when androgens are started or stopped.

2.       Oxyphenbutazone. Concurrent administration of oxyphenbutazone and androgens may result in elevated serum levels of oxyphenbutazone.

3.       Insulin. In diabetic patients the metabolic effects of androgens may decrease blood glucose and insulin requirements.

E. Drug/Laboratory Test Interferences

Androgens may decrease levels of thyroxine-binding globulin, resulting in decreased T4 serum levels and increased resin uptake of T3 and T4. Free thyroid hormone levels remain unchanged, however, and there is no clinical evidence of thyroid dysfunction.

F. Carcinogenesis

Animal Data. Testosterone has been tested by subcutaneous injection and implantation in mice and rats. The implant induced cervical-uterine tumors in mice, which metastasized in some cases. There is suggestive evidence that injection of testosterone into some strains of female mice increases their susceptibility to hepatoma. Testosterone is also known to increase the number of tumors and decrease the degree of differentiation of chemically induced carcinomas of the liver in rats.

Human Data. There are rare reports of hepatocellular carcinoma in patients receiving long-term therapy with androgens in high doses. Withdrawal of the drugs did not lead to regression of the tumors in all cases.

Geriatric Patients treated with androgens may be at an increased risk for the development of prostatic hypertrophy and prostatic carcinoma.

G. Pregnancy

Teratogenic Effects. Pregnancy Category X (see CONTRAINDICATIONS).

H. Nursing Mothers

It is not known whether androgens are excreted in human milk. Because many drugs are excreted in human milk and because of the potential for serious adverse reactions in nursing infants from androgens, a decision should be made whether to discontinue nursing or to discontinue the drug, taking into account the importance of the drug to the mother.

Numerous reports of ingestion of large doses of estrogen-containing oral contraceptives by young children indicate that serious ill effects do not occur. Overdosage of estrogen may cause nausea, and withdrawal bleeding may occur in females.

There have been no reports of acute overdosage with the androgens.

Esterified Estrogens and Methyltestosterone TABLETS Full Strength in bottles of 100.

Esterified Estrogens and Methyltestosterone TABLETS Full Strength light green, oval-shaped, film-coated, oral tablets, debossed "SYNTHO" on one side and "231" on other. Contains: 1.25 mg of Esterified Estrogens, USP and 2.5 mg of Methyltestosterone, USP.

Esterified Estrogens and Methyltestosterone TABLETS Half Strength in bottles of 100.

Esterified Estrogens and Methyltestosterone TABLETS Half Strength light blue, capsule-shaped, film-coated, oral tablets, debossed "SYNTHO" on one side and "230" on other. Contains: 0.625 mg of Esterified Estrogens, USP and 1.25 mg of Methyltestosterone, USP.

Store at 20°-25°C (68°-77°F); excursions permitted to 15°-30°C (59°-86°F). [See USP Controlled Room Temperature.]

Rx only

NDC 58657-406-01
Esterified Estrogens and
Methyltestosterone
Half strength Tablets
0.625 mg/ 1.25 mg
100 Tablets
Rx Only

Applies to esterified estrogens / methyltestosterone: oral tablet

Along with its needed effects, esterified estrogens / methyltestosterone may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur while taking esterified estrogens / methyltestosterone:

• Absent, missed, or irregular menstrual periods
• acne or oily skin
• decreased breast size
• enlarging clitoris
• hoarseness or deepening of the voice
• menstrual changes
• stopping of menstrual bleeding
• unnatural hair growth or loss

• Continuing nausea
• cough
• dark-colored urine
• difficulty with swallowing
• dizziness
• fast heartbeat
• fever
• hives
• itching
• light-colored stools
• loss of appetite
• puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
• purple or red-colored spots on the body or inside the mouth or nose
• shortness of breath
• skin rash
• sore throat
• tightness in the chest
• unusual tiredness or weakness
• vomiting
• wheezing

• Abdominal or stomach bloating, cramps, or pain
• anxiety
• bleeding from gums or nose
• blistering, peeling, or loosening of the skin
• bloating
• bloody or cloudy urine
• burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
• change in vaginal discharge
• changes in skin color, pain, or tenderness
• chest pain or discomfort
• chills
• clay-colored stools
• clear or bloody discharge from nipple
• confusion
• constipation
• convulsions
• darkening of urine
• decrease in amount of urine
• diarrhea
• difficult, burning, or painful urination
• difficulty with breathing
• difficulty with moving
• difficulty with speaking
• dimpling of the breast skin
• dizziness or lightheadedness
• double vision
• eye pain
• fainting
• fever
• fluid-filled skin blisters
• frequent urge to urinate
• headache
• heavy bleeding
• inability to move the arms, legs, or facial muscles
• inability to speak
• indigestion
• inverted nipple
• irregular heartbeats
• itching of the vagina or genital area
• joint or muscle pain
• large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
• light-colored stools
• loss of appetite
• lump in the breast or under the arm
• mood or mental changes
• muscle cramps in the hands, arms, feet, legs, or face
• muscle pain or stiffness
• nausea
• noisy, rattling breathing
• numbness and tingling around the mouth, fingertips, or feet
• pain
• pain during sexual intercourse
• pain in the ankles or knees
• pain or discomfort in the arms, jaw, back, or neck
• pain or feeling of pressure in pelvis
• painful, red lumps under the skin, mostly on the legs
• pains in the stomach, side, or abdomen, possibly radiating to the back
• pelvic pain
• persistent crusting or scaling of the nipple
• pinpoint red or purple spots on the skin
• poor insight and judgment problems with memory or speech
• red, irritated eyes
• redness or swelling of the breast
• ringing in the ears
• sensitivity to the sun
• shortness of breath
• skin thinness
• slow speech
• sore on the skin of the breast that does not heal
• sore throat
• sores, ulcers, or white spots in the mouth or on the lips
• stomach pain
• sudden shortness of breath or troubled breathing
• sweating
• swelling
• swelling of the fingers, hands, feet, or lower legs
• tenderness of the breast
• thick, white curd-like vaginal discharge without odor or with mild odor
• tiredness
• tremor
• trouble recognizing objects
• trouble thinking and planning
• trouble walking
• troubled breathing at rest
• unexpected or excess milk flow from breasts
• unpleasant breath odor
• vaginal bleeding
• vision changes
• vomiting of blood
• weakness
• weight gain
• yellow eyes or skin

Some side effects of esterified estrogens / methyltestosterone may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

• Blemishes on the skin
• brown, blotchy spots on the exposed skin
• decreased interest in sexual intercourse
• depression
• headache, severe and throbbing
• inability to have or keep an erection
• increase or decrease in weight
• increased hair growth, especially on the face
• increased in sexual ability, desire, drive, or performance
• increased interest in sexual intercourse
• irritability
• leg cramps
• loss in sexual ability, desire, drive, or performance
• loss of hair
• mental depression
• pimples
• redness of the skin
• swelling or inflammation of the mouth
• twitching, uncontrolled movements of the tongue, lips, face, arms, or legs