Package: 10 ampoules (100mg/ml 1 ml)

Active Substance: Methenolone Enanthate

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Primobolan, also known as Methenolone Enanthate, is an injectable anabolic steroid produced by Genetic Pharmaceuticals. Known for its mild anabolic properties, it is a popular choice among bodybuilders and athletes aiming to enhance muscle definition and performance without excessive side effects. This guide will provide a detailed overview of Primobolan, including its indications, contra-indications, administration, medical action, precautions, side effects, overdosage, and a conclusion.


Primobolan is primarily indicated for promoting lean muscle mass, improving muscle definition, and enhancing overall physical performance. It is particularly favored during cutting cycles, where the goal is to preserve muscle mass while reducing body fat. Primobolan is also used medically to treat conditions such as muscle wasting, osteoporosis, and severe weight loss due to chronic illness or malnutrition.

In bodybuilding, Primobolan is valued for its ability to help athletes achieve a hard and defined physique without significant water retention. This makes it an ideal choice for those preparing for competitions or seeking a lean, aesthetic look.


Primobolan is not suitable for everyone and should be avoided by individuals with certain health conditions. It is contraindicated in patients with prostate cancer, breast cancer, or any other androgen-sensitive conditions. Individuals with severe liver or kidney disease should avoid using Primobolan, as it can exacerbate these conditions. Primobolan is also not recommended for those with a history of cardiovascular issues, as it can affect cholesterol levels and increase the risk of heart problems.

Pregnant or breastfeeding women should not use Primobolan due to potential risks to the fetus or infant. Additionally, individuals with known hypersensitivity to Methenolone or any of its components should avoid using this steroid. It is crucial to consult with a healthcare provider before starting Primobolan to ensure it is safe and appropriate for your specific health condition.


Primobolan is administered via intramuscular injection. The dosage varies depending on the individual’s goals, experience level, and response to the steroid. For bodybuilding purposes, the typical dosage ranges from 400 to 800 milligrams per week, divided into two or three injections. Beginners are advised to start at the lower end of the dosage spectrum to assess their tolerance and minimize the risk of side effects.

Primobolan has a relatively long half-life, which allows for less frequent injections compared to other anabolic steroids. However, splitting the weekly dosage into multiple injections can help maintain more stable blood levels and reduce the risk of side effects. Cycle lengths typically range from 8 to 12 weeks. It is important to follow the prescribed dosage and administration guidelines to achieve the desired effects while minimizing potential risks.

Medical Action

Primobolan works by enhancing protein synthesis and nitrogen retention in muscles, which are essential for muscle growth and repair. It also increases red blood cell production, improving oxygen delivery to tissues and enhancing endurance and recovery. One of the key benefits of Primobolan is its ability to increase collagen synthesis and bone mineral content, strengthening bones and connective tissues. This makes it particularly useful for athletes who put significant stress on their joints and ligaments during intense training.

Primobolan has a moderate binding affinity to androgen receptors, which contributes to its anabolic effects. It does not aromatize into estrogen, meaning it does not cause water retention or gynecomastia, which are common side effects of many other anabolic steroids. This property makes Primobolan an excellent choice for athletes looking to achieve a lean and defined physique.


Using Primobolan requires several precautions to ensure safe and effective use. Regular monitoring of liver and kidney function is essential, as prolonged use can strain these organs. It is important to keep track of cholesterol levels, as Primobolan can negatively impact lipid profiles, increasing the risk of cardiovascular issues. Maintaining a healthy diet and exercise regimen is crucial to support overall health and minimize potential risks. Users should avoid alcohol and other hepatotoxic substances while using this steroid.

Consulting with a healthcare provider before and during use is highly recommended to ensure safe administration and monitor any potential side effects. Proper sterile injection techniques should be used to prevent infections. Additionally, users should be aware of the potential psychological effects of Primobolan, including increased aggression and mood swings, and take steps to manage these effects responsibly.

Side Effects

As with all anabolic steroids, Primobolan can cause side effects. Common side effects include acne, oily skin, and increased body hair growth due to its androgenic properties. Some individuals may experience hair loss if they are genetically predisposed to male pattern baldness. Primobolan can also cause water retention and high blood pressure, which can increase the risk of cardiovascular problems.

Androgenic Side Effects

The androgenic side effects of Primobolan include acne, oily skin, and increased body hair. Women using Primobolan may experience virilization symptoms, such as deepening of the voice, increased body hair, and menstrual irregularities. Although Primobolan does not aromatize into estrogen, it can still cause androgenic side effects like aggression and mood swings.

Cardiovascular Side Effects

Primobolan can negatively impact cholesterol levels, increasing LDL (bad cholesterol) and decreasing HDL (good cholesterol). This can raise the risk of cardiovascular issues, such as heart attack and stroke. Monitoring cholesterol levels and maintaining a heart-healthy diet and exercise regimen are essential while using Primobolan.


While Primobolan is not known to be highly hepatotoxic, prolonged use or high doses can still strain the liver. Regular liver function tests are recommended to monitor for any signs of liver damage. Avoiding alcohol and other hepatotoxic substances is crucial to protect liver health.


Overdosage of Primobolan can lead to severe health complications. Symptoms of overdose may include severe headaches, nausea, vomiting, liver pain, and jaundice (yellowing of the skin or eyes) due to liver damage. Prolonged or excessive use can cause irreversible side effects such as liver tumors or significant cardiovascular issues. If an overdose is suspected, immediate medical attention is crucial. Adhering to the prescribed dosage and cycle length is essential to avoid the risk of overdose and associated health issues. Users should never exceed the recommended dose or extend their cycle length without consulting a healthcare professional. Regular monitoring and responsible use are key to preventing overdose and its serious consequences.


Primobolan from Genetic Pharmaceuticals is a mild yet effective injectable anabolic steroid known for its benefits in muscle growth, strength enhancement, and overall physical performance. Its unique properties make it particularly effective for those looking to gain lean muscle mass and achieve a well-defined physique. However, due to its potential side effects and health risks, it should be used responsibly and under the guidance of a healthcare professional.

By following proper dosage guidelines, taking necessary precautions, and monitoring health parameters, individuals can achieve significant benefits from Primobolan while minimizing risks. Always consult with a healthcare provider before starting any steroid regimen to ensure it is appropriate for your health and fitness goals. Overall, Primobolan offers a balanced and effective solution for those looking to enhance their physique and performance, provided it is used responsibly and with proper medical supervision.

In conclusion, Primobolan is a valuable tool in the arsenal of athletes and bodybuilders. Its unique properties and effects make it a powerful addition to any muscle-building or performance-enhancing regimen. By understanding its indications, contra-indications, administration, medical action, precautions, side effects, and the importance of avoiding overdosage, users can make informed decisions and optimize their results. Always prioritize health and safety, and consult with a healthcare professional to ensure the best possible outcomes while using Primobolan.


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