Deca (Nandrolone Decanoate) is a 19-nortestosterone derivative known for its strong anabolic properties and relatively low androgenic effects. It promotes protein synthesis, increases red blood cell count, and enhances nitrogen retention, leading to notable improvements in muscle mass and endurance. One of the unique benefits of Deca 300mg is its ability to lubricate joints and relieve joint pain, making it popular among athletes dealing with connective tissue discomfort.
It has a slow release time due to the decanoate ester, making it ideal for users looking for steady results with infrequent injections. However, it can suppress natural testosterone production and often requires concurrent testosterone use to maintain hormonal balance.
Benefits
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Promotes significant lean muscle growth
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Enhances joint and connective tissue health
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Improves recovery and endurance
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Boosts nitrogen retention and red blood cell production
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Long-lasting effects with fewer injections
Side effects
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Testosterone suppression
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Water retention and potential bloating
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Elevated prolactin levels (may require dopamine agonist like Cabergoline)
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Possible gynecomastia
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Decreased libido or erectile dysfunction without test base
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Acne, oily skin, or hair thinning in sensitive individuals
Dosages & Protocol
Dosages for Men:
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Beginner: 300mg (1ml) per week
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Intermediate: 600mg (2ml) per week
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Advanced: Up to 900mg (3ml) per week (with prolactin control)
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Cycle length: 10–14 weeks
Always stack with a testosterone base to prevent sexual side effects and suppression.
Not recommended for women due to high risk of virilization.
How to administer
Administer via intramuscular injection using a 23–25 gauge needle (1–1.5 inch).
Injection sites: glutes, outer thigh, or deltoid.
Inject once or twice per week depending on total dosage and user preference. Always rotate injection sites and follow sterile procedures.
Storage
Store in a cool, dry place away from sunlight. Do not refrigerate. Keep sealed when not in use.
Half life & detectability
Half-Life: Approximately 6–12 days
Detection Time: Up to 18 months after last use
For athletes subject to drug testing, it is crucial to consider these detection times to avoid positive tests for banned substances.