• Nandrolone Undecanoate: Uses, Side Effects and Common Brands

  • Nandrolone undecanoate is an anabolic steroid that in composition is very similar to nandrolone decanoate. This medicine is not intended for oral administration and it is available as oil based injection. This medicine is considered safe for use in women; however it is indicated to assess all the risks prior to commencing the therapy with it. Nandrolone undecanoate is used to stimulate weight gain following extensive surgery, severe trauma or chronic infection or any other cases that result in inadequate weight gain. It may also be used to increase the muscle mass caused by long-term treatment with corticosteroids and to reduce bone pain associated with osteoporosis. The increase in muscle mass and strength is due to water retention in tissues and joints. It is a drug that may be obtained also without prescription. However, it is recommended to first consult a physician in order to assess its safety and efficiency prior to commencing to use it. Follow the therapy with it exactly as prescribed. Increased doses may increase the incidence of adverse reactions.


    • Nandrolone undecanoate is contraindicated in persons who have a known hypersensitivity to it or to any of its ingredients;
    • Do not use nandrolone undecanoate during pregnancy due to the fact that it crosses the placenta and may cause harm to the fetus. If you are pregnant or intend to become pregnant while on therapy with nandrolone undecanoate, prevent your doctor right away and discontinue with the drug.
    • It is contraindicated the use of nandrolone undecanoate if the patient is breastfeeding. It is excreted into breast milk and may harm the fetus. Nursing mothers are advised to stop the breastfeeding while using this drug.

    Administration and Dosage

    As already mentioned above, nandrolone undecanoate is a drug that comes in form of injection. An injection of 2 ml is equal to 2 ampoules, because each ampoule contains 80.5mg of nandrolone decanoate in 1ml. Nandrolone undecanoate has a shorter life period than nandrolone decanoate. Follow the usage exactly as indicated. In order to obtain the desired results it is important to follow a diet high in proteins and calories. For any other information, patients are advised to get the necessary counseling by consulting a physician. The dose of nandrolone undecanoate is set individually considering the medical condition and tolerance to the drug. Therefore, to get the right prescription for your particular medical condition, contact a physician. Nandrolone undecanoate is mostly injected twice a week. The minimum dosage is 2 ml per week. As this medicine is mostly used by athletes, the weekly dosage of 4 ml is sufficient for achieving the desired results. Higher dosages increase the incidence of side effects. For women it is recommended a dose of 1 ml per week in order to avoid the virilization symptoms.

    Prior to injection of nandrolone undecanoate visually inspect the vial in order to detect any particles or gloomy content.

    Important tips for the use of nandrolone undecanoate:

    • Prevent your doctor about all medicines you are taking daily, including prescription, non-prescription ones, herbal products, minerals and natural supplements. It is not recommended the concomitant administration of nandrolone undecanoate with the following medicines: oral anticoagulants, oral hypoglycemics, corticosteroids and enzyme inducing agents. For the full list of medicines that may interact with nandrolone undecanoate, contact your physician.
    • Inform your doctor about all existing diseases you have, including heart problems, kidney and liver disorders and others medical conditions. Make regular tests in order to periodically assess and evaluate the safety and efficiency of the drug for the desired results.
    • If any allergic reactions to the drug develop, report about them right away and discontinue with the drug.
    • Do not use higher doses of nandrolone undecanoate than the ones indicated by a physician or pharmacist. You may overdose and experience such adverse events as confusion, nausea and vomiting, diarrhea, dizziness and others. If you accidentally took a higher dose of nandrolone undecanoate, report about it and seek prompt medical help and assistance.

    Possible Side Effects

    Like most of medicines, nandrolone undecanoate may cause side effects when used in prescribed/indicated doses. It happens due to the fact that each person reacts in a different way to the medicine as others. As already mentioned, nandrolone undecanoate is very similar to the mechanism of action with nandrolone decanoate; however, its increased androgenic component helps the athlete achieve a good strength with few side effects. Therefore, patients respond well to the therapy with nandrolone undecanoate. Side effects are rare and occur mostly in sensitive persons’ or when high dosages of medicine are taken.

    Possible side effects with nandrolone undecanoate are the following:

    • Increased blood pressure (hypertension);
    • Elevated cholesterol levels;
    • Acne;Gynecomastia.

    Generally, most of the enumerated adverse reactions disappear after discontinuation of therapy with nandrolone undecanoate. However, there is increased incidence of side effects with any anabolic steroid that may have serious impact on your overall health condition.

    Other side effects with nandrolone undecanoate are the following:

    • Oily skin
    • Hoarseness and change in voice;
    • Unusual hair loss or unusual hair growth on the face and body;
    • Nausea and vomiting;
    • Bone pain;
    • Swelling of feet;
    • Sore throat and/or fever;
    • Unusual weight gain.

    If you forgot to take an injection of nandrolone undecanoate, take it as soon as you remember. If it is already too late to take the skipped dose, leave it and return to your usual schedule. Do not take a double dose to make up for the skipped one. Try to not miss more than one dose a day in order to not decrease the effect of the drug. If you have any questions related to the use of nandrolone undecanoate ask a pharmacist or contact a physician.


    It is recommended to keep nandrolone undecanoate in a clean and dry place at the room temperature below 30 degrees C. Store the drug away from the direct sunlight and heat. Also, try to not store the ampoules in the kitchen or in the bathroom near sink. Keep it out of the reach and sight of children. Do not store the medicine in the refrigerator in order to avoid freezing. Also, do not use expired medicine. Always check the expiry date on the bottom of the packaging.

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