Deca 300

What Is Dragon Pharma Deca 300?

Deca 300 contains Nandrolone Decanoate at 300mg/ml in a 10ml multi-dose vial. Nandrolone is one of the most established mass-building steroids, valued for quality lean gains, joint relief, and collagen synthesis support. It has been used in clinical settings for anaemia, osteoporosis, and muscle-wasting conditions since the 1960s.

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What Are the Key Specs?

• Active compound: Nandrolone Decanoate 300mg/ml
• Vial size: 10ml (3,000mg total)
• Half-life: 6 to 12 days
• Detection time: 18 months
• Anabolic rating: 125
• Androgenic rating: 37
• Aromatisation: Low (approximately 20% of testosterone)

How Is Deca 300 Typically Used?

Dosed at 200 to 400mg per week for 12 to 16 weeks. Due to its long half-life, once-weekly injection is sufficient. Always run with a testosterone base (testosterone dose should be equal to or greater than Nandrolone dose to prevent “Deca Dick” from progesterone-related libido suppression).

Classic mass stack: Enantat 250 at 500mg/week + Deca 300 at 300mg/week for 14 weeks. PCT requires extended recovery time (start 3 weeks after last injection) due to Nandrolone’s long detection time. Arimidex for estrogen management.

Also available: Deca 500 (higher concentration), NPP 150 (shorter ester, Janoshik tested at 149.29mg/ml, 100%), and Deca 200/Test E 200 (convenience blend). Brand quality confirmed: 8.5/10 in our 2026 review.