This information is intended for use by health professionals

1. Name of the medicinal product

Deca-Durabolin 50mg/ml

2. Qualitative and quantitative composition

Each ampoule contains 1 ml of 50 mg/ml nandrolone decanoate. For the full list of excipients, see section 6.1.

3. Pharmaceutical form

Solution for injection

Clear, yellow, oily solution

4. Clinical particulars
4.1 Therapeutic indications

For use in osteoporosis in post-menopausal women.

Established osteoporosis should have been diagnosed by the following parameters:

i) crush or wedge fractures of the vertebrae

ii) other osteoporotic fractures

iii) established reduction in bone mineral content as measured by accepted BMC measurements.

4.2 Posology and method of administration


Post-menopausal women

50mg every three weeks

The duration of treatment depends on the clinical response and the possible occurrence of side-effects.

We would recommend that the effectiveness of therapy be monitored with the appropriate methods for osteoporosis on a 6-12 monthly basis.

Method of administration:

Deca-Durabolin should be administered by deep intramuscular injection

4.3 Contraindications

Pregnancy (see section 4.6).



Hypersensitivity to the active substance or to any of the excipients, including arachis oil. Deca-Durabolin is therefore contraindicated in patients allergic to peanuts or soya (see section 4.4).

4.4 Special warnings and precautions for use

Medical examination:

Physicians should consider monitoring patients receiving Deca-Durabolin before the start of treatment, at quarterly intervals for the first 12 months and yearly thereafter for the following parameters:

• Hematocrit and hemoglobin to exclude polycythemia.

Conditions that need supervision:

Patients, especially the elderly, with the following conditions should be monitored for:

Tumours – Mammary carcinoma, hypernephroma, bronchial carcinoma and skeletal metastases. In these patients hypercalcaemia or hypercalciuria may develop spontaneously, and also during androgen therapy. Nevertheless, the hypercalcaemia or hypercalciuria should first be treated appropriately and after restoration of normal calcium levels, if judged necessary and taking into account the risks and benefits on a case by case basis, hormone therapy can be resumed, with caution.

Pre-existing conditions-In patients with pre-existing cardiac, renal or hepatic insufficiency/disease or epilepsy or migraine anabolic steroid treatment may cause complications characterized by oedema with or without congestive heart failure. In such cases treatment must be stopped immediately. Patients who experienced myocardial infarction, cardiac-, hepatic- or renal insufficiency, hypertension, epilepsy, or migraine should be monitored due to the risk of deterioration of or reoccurrence of disease. In such cases treatment must be stopped immediately.

Diabetes mellitus – Deca-Durabolin can improve glucose tolerance in diabetic patients (see section 4.5).

Anti-coagulant therapy – Deca-Durabolin can enhance the anti-coagulant action of coumarin-type agents (see also section 4.5).

Liver dysfunction - caution should be used in patients with severe hepatic impairment and Deca-Durabolin 50mg/ml should only be used if the benefits outweigh the risks.

Adverse events:

If anabolic steroid-associated adverse reactions occur (see section 4.8), treatment with Deca-Durabolin should be discontinued and, upon resolution of complaints, treatment can be resumed.


Patients should be informed about the potential occurrence of signs of virilisation. In particular, singers and women with speech professions should be informed about the risk of deepening of the voice.

If signs of virilisation develop, the risk/benefit ratio has to be newly assessed with the individual patient.

(Mis) use in sports:

Nandrolone is classified as a prohibited substance under the Olympic Movement Anti- doping Code (OMAC 1999). The misuse of Nandrolone and other anabolic steroids to enhance ability in sports carries serious health risks and is to be discouraged.

Drug abuse and dependence:

Anabolic androgenic steroids have been subject to abuse, typically at doses higher than recommended for the approved indication(s) and in combination with testosterone. Abuse of anabolic androgenic steroids including testosterone can lead to serious adverse reactions including: cardiovascular (with fatal outcomes in some cases), hepatic and/or psychiatric events. Anabolic androgenic steroid abuse may result in dependence and withdrawal symptoms upon significant dose reduction or abrupt discontinuation of use. The abuse of anabolic androgenic steroids including testosterone carries serious health risks and is to be discouraged.


Deca-Durabolin contains arachis oil (peanut oil) and should not be taken/applied by patients known to be allergic to peanut. As there is a possible relationship between allergy to peanut and allergy to soya, patients with soya allergy should also avoid Deca-Durabolin (see section 4.3).

Deca-Durabolin 50mg/ml contains 100 mg benzyl alcohol per ml solution and must not be given to premature babies or neonates. Benzyl alcohol may cause anaphylactoid reactions in infants and children up to 3 years old.

Paediatric Population:

Safety and efficacy have not been adequately determined in children and adolescents. In pre-pubertal children statural growth and sexual development should be monitored since anabolic steroids in general and Deca-Durabolin in high dosages may accelerate epiphyseal closure and sexual maturation.

4.5 Interaction with other medicinal products and other forms of interaction

Enzyme-inducing agents may decrease and enzyme-inhibiting drugs may increase nandrolone levels. Therefore, adjustment of the dose of Deca-Durabolin may be required.

Insulin and other anti-diabetic medicines:

Anabolic steroids may improve glucose tolerance and decrease the need for insulin or other anti-diabetic drugs in diabetic patients (see section 4.4). Patients with diabetes mellitus should therefore be monitored especially at the beginning or end of treatment and at periodic intervals during Deca-Durabolin treatment.

Anti-coagulant therapy:

High doses of Deca-Durabolin may enhance the anti-coagulant action of coumarin- type agents (see section 4.4). Therefore close monitoring of prothrombin time and if necessary a dose reduction of the anti-coagulant is required during therapy.

ACTH or corticosteroids:

The concurrent administration of anabolic steroids with ACTH or corticosteroids may enhance edema formations; thus these active substances should be administered cautiously, particularly in patients with cardiac or hepatic disease or in patient predisposed to edema (see section 4.4).

Laboratory test interactions:

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

Recombinant Human Erythropoietin:

Combination of Deca-Durabolin with rhEPO (recombinant human erythropoietin), especially in females, may enable a reduction of the erythropoietin dose to reduce anemia.

4.6 Pregnancy, lactation and fertility

Deca-Durabolin is contra-indicated in women who are pregnant (see section 4.3).


There are no adequate data for the use of Deca-Durabolin in pregnant women. In view of the risk of virilisation of the foetus, Deca-Durabolin should not be used during pregnancy. Treatment with Deca-Durabolin should be discontinued when pregnancy occurs.


There are no adequate data for the use of this medicine during lactation to assess potential harm to the infant or a possible influence on milk production. Therefore, Deca-Durabolin should not be used during lactation.


In men treatment with Deca-Durabolin can lead to fertility disorders by repressing sperm-formation. In women treatment with androgens can lead to an infrequent or repressed menstrual cycle (see section 4.8).

4.7 Effects on ability to drive and use machines

Deca-Durabolin has no influence on the ability to drive and use machines.

4.8 Undesirable effects

Due to the nature of Deca-Durabolin, side effects cannot be quickly reversed by discontinuing medication. Injectables in general, may cause local reaction at the injection site.

Deca-Durabolin at the recommended dosages is unlikely to produce virilising effects. High dosages, prolonged treatment and/or too frequent administration may cause:

System Organ Class

MedDRA term

Endocrine disorders


Metabolism and nutrition disorders

Lipids abnormal1

Psychiatric disorders

Libido increased

Vascular disorders


Respiratory, thoracic and mediastinal disorders


Gastrointestinal disorders


Hepatobiliary disorders

Hepatic function abnormal

Peliosis hepatis

Liver tumours

Skin and subcutaneous tissue disorders




Renal and urinary disorders

Urine flow decreased

Reproductive system and breast disorders

Enlarged clitoris

General disorders and administration site conditions


Injection site reaction

Sodium retention


Haemoglobin increased

1. Decrease in serum LDL-C, HDL-C and triglycerides.

Virilisation which appears in sensitive women as hoarseness, acne, hirsutism and increase of libido. Hoarseness may be the first symptom of vocal change which may end in long-lasting, sometimes irreversible deepening of the voice.

The terms used to describe the undesirable effects above are also meant to include synonyms and related terms.

Reporting of suspected adverse reactions

Reporting suspected adverse reactions after authorisation of the medicinal product is important. It allows continued monitoring of the benefit/risk balance of the medicinal product. Healthcare professionals are asked to report any suspected adverse reactions via the Yellow Card Scheme at: or search for MHRA Yellow Card in the Google Play or Apple App Store.

4.9 Overdose

The acute toxicity of nandrolone decanoate in animals is very low. There are no reports of acute overdosage with Deca-Durabolin in the human.

5. Pharmacological properties
5.1 Pharmacodynamic properties

Pharmacotherapeutic group: Anabolic steroids. ATC code: A14A B01

Nandrolone is chemically related to testosterone and shows enhanced anabolic and a reduced androgenic activity.

In humans Deca-Durabolin has been shown to positively influence calcium metabolism and to increase bone mass in osteoporosis.

Androgenic effects (e.g. virilisation) are relatively uncommon at the recommended dosages. Nandrolone lacks the C17 alpha-alkyl group which is associated with the occurrence of liver dysfunction and cholestasis.

5.2 Pharmacokinetic properties


Nandrolone decanoate is slowly released from the injection site into the blood with a half-life of 6 days.


The ester is rapidly hydrolysed to nandrolone in the blood with a half-life of one hour or less. The half-life for the combined process of hydrolysis of nandrolone decanoate and of distribution and elimination of nandrolone is 4.3 hours.

Biotransformation and excretion

Nandrolone is metabolised by the liver. 19-norandrosterone, 19-noretiocholanolone and 19-norepiandrosterone have been identified as metabolites in the urine. It is not known whether these metabolites display a pharmacological action.

5.3 Preclinical safety data

Toxicity studies in animals after repeated dosing did not indicate a safety risk for humans. No formal studies to assess reproduction toxicity, genotoxicity and carcinogenicity have been conducted by the company. As a class, anabolic steroids are considered to be probably carcinogenic to humans (IARC Group 2a).

The use of androgens in different species has resulted in virilisation of the external genitals of female foetuses. Investigations into the genotoxic potential of nandrolone showed it to be positive in an in vitro micronucleus assay and an in vivo micronucleus assay in mouse but not rat, and in the comet assay of mouse and rat. The clinical relevance of these findings is unknown, therefore the risk to patients cannot be ruled out.

6. Pharmaceutical particulars
6.1 List of excipients

Benzyl alcohol Arachis oil

6.2 Incompatibilities

None known

6.3 Shelf life

3 years

6.4 Special precautions for storage

Store below 30°C

Do not refrigerate or freeze.

Store in the original package in order to protect from light.

6.5 Nature and contents of container

Deca-Durabolin 50 mg/ml solution for injection: 1 ml type I ampoules sold in packs of 1, 3 or 6 ampoules.

Not all pack sizes may be marketed.

6.6 Special precautions for disposal and other handling

No special requirements for disposal.

7. Marketing authorisation holder

Aspen Pharma Trading Limited,

3016 Lake Drive,

Citywest Business Campus,

Dublin 24,


8. Marketing authorisation number(s)

PL 39699/0055

9. Date of first authorisation/renewal of the authorisation

Date of first authorisation: 27/09/1988

Date of latest renewal: 26/04/2005

10. Date of revision of the text

April 2019