Testosterone Undecanoate 200 mg/ml

Testosterone Undecanoate is an androgenic anabolic steroid — the longest-acting ester of testosterone. It is produced in a concentration of 200 mg/ml. After injection it provides very slow release, maintaining stable hormone levels for 2–4 weeks.
Main effects:

Significant muscle mass growth and strength increase.
Improved recovery and endurance.
Enhanced mood, motivation, and libido.
Stable testosterone levels over a long period.

Usage and dosages:

Beginners: 250–500 mg per week or 1000 mg every 2–3 weeks.
Experienced users: 500–750 mg per week or 1000–1500 mg every 2 weeks.
Course duration: 10–16 weeks.
Injections: 1 time every 7–14 days (or longer).

It can be used solo or in combination with other steroids. After the cycle, Post-Cycle Therapy (PCT) is required.
Advantages:

Very long duration of action and stable levels.
Extremely convenient injection schedule.
Suitable for long-term cycles and HRT.

Disadvantages:

Slow to start working.
Difficult to adjust dosage quickly.
Aromatization and suppression of natural testosterone production.