Deca 300

£39.00

Deca 300 is the high-concentration flagship Nandrolone Decanoate — 300mg/mL delivering a substantial productive weekly dose in a single millilitre injection. The 300mg/mL concentration makes weekly dosing protocols cleaner: one millilitre provides 300mg weekly, the minimum dose where Nandrolone’s full anabolic benefits (beyond just joint support) are meaningfully expressed in terms of muscle accrual. At 300–600mg weekly of Nandrolone Decanoate, users experience significant lean tissue accumulation over 14–16 week cycles, with the compound’s long decanoate ester building to a therapeutic plasma level around weeks 4–6 and maintaining it through the cycle. The profound improvements in recovery, joint comfort, and connective…

SKU: PHX-040
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Description

Deca 300 is the high-concentration flagship Nandrolone Decanoate — 300mg/mL delivering a substantial productive weekly dose in a single millilitre injection. The 300mg/mL concentration makes weekly dosing protocols cleaner: one millilitre provides 300mg weekly, the minimum dose where Nandrolone’s full anabolic benefits (beyond just joint support) are meaningfully expressed in terms of muscle accrual. At 300–600mg weekly of Nandrolone Decanoate, users experience significant lean tissue accumulation over 14–16 week cycles, with the compound’s long decanoate ester building to a therapeutic plasma level around weeks 4–6 and maintaining it through the cycle. The profound improvements in recovery, joint comfort, and connective tissue integrity that Nandrolone produces at these doses allow more frequent and more intense training — compounding the direct anabolic effect with indirect benefits. Comprehensive prolactin management with Cabergoline is non-negotiable. Verified at 99%+ purity by Puralytix. Once-weekly injection at 1–1.5mL (300–450mg) represents a productive mass-building dose. Monitor prolactin at 4 weeks and adjust Cabergoline dose accordingly. ‘Deca dick’ — the libido and erectile dysfunction associated with Nandrolone — is primarily driven by prolactin and suppressed DHT; Cabergoline management and maintaining a DHT-rich compound (Masteron, Proviron) effectively prevent this in most users.

Every Phalanx Anabolics batch is independently assayed by a third-party laboratory for identity, label-claim accuracy and heavy-metal content. The certificate below corresponds to the batch supplied for this product.

PHX-B1087-26Pass

Deca 300

Purity99.6%
Tested1 April 2026
LabPuralytix
Nandrolone Decanoate300mg/ml → 307mg/ml
Pb · NDHg · NDAs · NDCd · ND

Certificate issued by Puralytix. View all certificates →

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