Testred Side Effects Center
Medical Editor: John P. Cunha, DO, FACOEP
Testred (methyltestosterone) is used in men and boys to treat conditions caused by a lack of testosterone, such as delayed puberty or other hormonal imbalances. This drug is also used in women to treat breast cancer that has spread to other parts of the body. It is a man-made form of testosterone, a naturally occurring male sex hormone. Common side effects include nausea, vomiting, headache, skin color changes, increased/decreased sexual interest, oily skin, hair loss, and acne.
The recommended dose of Testred for replacement therapy in androgen-deficient males is 10 to 50 mg daily. The usual dosage of Testred for androgen therapy in breast carcinoma in females is from 50-200 mg daily. Testred may interact with blood thinners, or insulin or oral diabetes medications. Tell your doctor all medications and supplements you use. Testred must not be used during pregnancy. It may harm a fetus. Consult your doctor to discuss birth control. It is recommended that women using this medication use 2 forms of birth control (such as condoms and birth control pills) while taking this medication. It is unknown if this drug passes into breast milk. It may affect milk production and it may harm a nursing infant. Breastfeeding while using this drug is not recommended.
Our Testred (methyltestosterone) Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
What is Patient Information in Detail?
Easy-to-read and understand detailed drug information and pill images for the patient or caregiver from Cerner Multum.
Testred in Detail - Patient Information: Side Effects
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have any of these serious side effects:
- feeling short of breath, even with mild exertion;
- swelling, rapid weight gain;
- increased or ongoing erection of the penis;
- bone pain, increased thirst, memory problems, restless feeling, confusion, nausea, loss of appetite, increased urination, weakness, muscle twitching; or
- nausea, vomiting, stomach pain, loss of appetite, and jaundice (yellowing of the skin or eyes).
Women receiving methyltestosterone may develop male characteristics, which could be irreversible if testosterone treatment is continued. Stop taking this medication and call your doctor at once if you notice any of these signs of excess testosterone:
- changes in menstrual periods;
- male-pattern hair growth (such as on the chin or chest);
- hoarse voice; or
- enlarged clitoris.
Less serious side effects (in men or women) may include:
- acne, changes in skin color;
- breast swelling;
- male pattern baldness;
- headache, anxiety, depressed mood;
- mild nausea;
- numbness or tingly feeling; or
- increased or decreased interest in sex.
This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect. You may report side effects to FDA at 1-800-FDA-1088.
Read the entire detailed patient monograph for Testred (Methyltestosterone) »
What is Patient Information Overview?
A concise overview of the drug for the patient or caregiver from First DataBank.
Testred Overview - Patient Information: Side Effects
Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects when it is used at normal doses.
Tell your doctor immediately if any of these unlikely but serious side effects occur: mental/mood changes (such as anxiety, depression, increased anger), trouble sleeping/snoring.
If you are male, tell your doctor immediately if any of these unlikely but serious side effects occur: trouble urinating, breast swelling/tenderness, too frequent/prolonged erections.
Rarely, males may have a painful or prolonged erection lasting 4 or more hours. If this occurs, stop using this drug and seek immediate medical attention, or permanent problems could occur.
This medication can decrease sperm production, an effect that may lower male fertility. Consult your doctor for more details.
If you are female, tell your doctor immediately if any of these unlikely but serious side effects occur: deepening of the voice, hoarseness, unusual facial/body hair growth, enlarged clitoris, irregular menstrual periods.
This medication can cause your body to hold on to extra body water (edema). This can increase your risk of heart failure. Tell your doctor immediately if any of these unlikely but serious signs of water retention or heart failure occur: decreased exercise ability, hands/ankles/feet swelling, unusual tiredness, shortness of breath while lying down.
Tell your doctor immediately if any of these rare but very serious side effects occur: signs of serious liver disease (such as persistent abdominal pain/nausea, unusual tiredness, yellowing eyes/skin, dark urine).
A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
In the US -
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
Read the entire patient information overview for Testred (Methyltestosterone)»
What is Prescribing information?
The FDA package insert formatted in easy-to-find categories for health professionals and clinicians.
Testred FDA Prescribing Information: Side Effects
Endocrine and Urogenital
Female: The most common side effects of androgen therapy are amenorrhea and other menstrual irregularities, inhibition of gonadotropin secretion and virilization, including deepening of the voice and clitoral enlargement. The latter usually is not reversible after androgens are discontinued. When administered to a pregnant woman androgens cause virilization of external genitalia of the female fetus.
Hematologic: Suppression of clotting factors II, V, VII, and X, bleeding in patients on concomitant anticoagulant therapy and polycythemia.
Metabolic: Increased serum cholesterol.
Miscellaneous: Rarely anaphylactoid reactions.
Drug abuse and Dependence
Methyltestosterone Capsules are classified as a schedule III Controlled Substance under the Anabolic Steroids Act of 1990.
Read the entire FDA prescribing information for Testred (Methyltestosterone) »
Additional Testred Information
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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