Testosterone Undecanoate is a testosterone ester, which is converted to dihydrotestosterone (DHT). Only a small part of the substance can be converted into estrogen, since dihydrotestosterone is a non-aromatizing androgen. Therefore, Andriol does not cause feminization symptoms, such as gynecomastia or increased fat accumulation.

Andriol is a good alternative for athletes who have problems with testosterone preparations, which are administered by injection.

Women should avoid using Andriol, because the drug contains androgenic components. When used in female bodybuilders, Andriol sometimes causes high blood pressure, water retention, acne, and masculinization. In men, the drug can cause priapism (painful and prolonged erection), oligospermia, and decrease in semen volume. Furthermore, the drug promotes water and sodium retention in the body.

Good tolerability – this is a great advantage of Andriol. For example, it can be used in combination with Deca Durabolin. However, the effect of Andriol is weaker than with Sustanon and Testosterone Enanthate. In practice, Andriol is the main oral medication for athletes who already had a negative experience with injectable testosterone, as well as for older athletes.

Andriol should be stored in a cool place (store better in the refrigerator), because the capsules are very sensitive to heat.

Instructions for Use

Andriol is used as hormone replacement therapy for testosterone deficiency and similar disorders, as well as for certain non-cancerous tumors. Doctors may also recommend Andriol in the following cases:

  • Erectile dysfunction associated with a lack of androgens;
  • Infertility caused by impaired spermatogenesis;
  • Osteoporosis caused by androgen deficiency;
  • Climacteric disorders.

In women, the drug can be prescribed for uterine fibroid tumors, endometriosis and dysfunctional uterine bleeding caused by testosterone deficiency.

Andriol (Testosterone Undecanoate) action

Andriol moves through the gastrointestinal tract very quickly. The maximum level of testosterone can be reached within 2 hours after the administration of the drug. It is believed that the drug is excreted very rapidly. Therefore, it is very popular in bodybuilding.

Andriol works as androgenic anabolic steroid: it increases bone density and muscle mass, improves protein synthesis, increases libido. Andriol is not used in women (the drug may lead to masculinization).

Andriol does not aromatize. The drug is popular among those who have already experienced negative impact of other steroids – sharp declines in testosterone and gynecomastia. But if you need a better effect, Testosterone Undecanoate should be taken in high doses.

Andriol (Testosterone Undecanoate) key properties

Unlike methyltestosterone (one of the most toxic steroids), Andriol is harmless to human health. Unlike other oral anabolic steroids, it has no toxic effect on the liver. Besides, Andriol does not aromatize and does not demonstrate estrogenic activity. Thus, you can avoid side effects such as acne and gynecomastia. Andriol does not affect testosterone levels (if you do not take high doses).

Disadvantages of Andriol (Testosterone Undecanoate)

Despite the fact that Andriol radically differs from other anabolic steroids, the drug has certain disadvantages. Primarily, this drug is absolutely contraindicated in women, as it may cause water retention, hypertension and acne.

Bodybuilders state that Andriol should be taken in high doses in order to achieve significant results.

How to take Andriol (Testosterone Undecanoate), Dosage.

The dose for Andriol in bodybuilding should be determined individually. The reason is that the therapeutic dosage of Andriol (10 mg per day for those with lower levels of natural hormones) is not suitable for all athletes. The common dosage is of 240 mg per day in the morning or in 2-3 doses per day. This drug should be taken during meals. The capsules should be swallowed whole without chewing.

Andriol (Testosterone Undecanoate) Side effects

It has been argued that Andriol has no side effects. In practice, high doses of this drug may cause the following side effects: acne, unwanted erections, sleep disorders, high blood pressure, fluid retention. These effects may be critical for competitions; therefore, the drug should be used in conjunction with other forms of injectable steroids. Andriol is contraindicated in those with high blood pressure, heart, kidney and liver failure, and cancer.

The drug should be used with caution in patients with heart diseases (Andriol can cause complications characterized by edema), obesity or chronic lung disease. If you have one of these diseases, you should consult with your doctor before taking this medication.

Some patients may experience diarrhea, pain or discomfort in the stomach while taking the drug. If you have any of these side effects or you notice other side effects not mentioned above, inform your doctor. In case of side effects associated with Andriol treatment, stop the therapy or reduce the dosage of the drug.

The drug is not indicated for pregnant and lactating women (it may cause fetal masculinization).


Andriol is the best oral steroid for athletes who take anabolic steroids in low doses. This is also a good alternative to injectable steroids (Andriol is safer than injections). The approximate daily dose is 240-280 mg (dose reduction won’t bring the desired effects). Another advantage of Andriol is that it can be combined with other drugs, such as Deca Durabolin. Generally speaking, Andriol is a popular steroid for those who do not want to start using injectable steroids.

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