Bulking·Intermediate·18 weeks

Bulking — Classic Mass

Test + Deca + Dbol kickstart — the canonical intermediate mass protocol.

Overview

The research-canonical intermediate mass cycle. Testosterone Enanthate as the foundation (long ester, stable serum levels), Nandrolone Decanoate for mass and joint recovery (documented synergy with test), Dianabol as a 4-week oral kickstart to amplify early gains. Aromatase control and full PCT are built in. This is the most-studied mass protocol in the bodybuilding literature.

Who it's for

  • 01Intermediate researchers with ≥1 prior clean testosterone-only cycle
  • 02Ages 27+ with complete bloodwork history
  • 03Researchers with joint-recovery goals (Deca has documented collagen synthesis effects)

What's inside — 6 compounds

Testosterone base
Test Enanthate

250mg/ml

Dose
250 mg
Frequency
2× weekly
Weeks
1-16
Category
injectables

500 mg/week split Mon/Thu

Mass builder — 19-nor
Deca Durabolin

200mg/ml

Dose
200 mg
Frequency
2× weekly
Weeks
1-14
Category
injectables

400 mg/week split. Drop 2 weeks before test to let Deca clear faster than Test

Oral kickstart
Dianabol

50 × 20mg

Dose
25 mg
Frequency
Daily
Weeks
1-4
Category
orals

Split AM/PM. Kickstart only — not for the full cycle (hepatotoxicity)

Aromatase inhibitor
Arimidex

50 × 1mg

Dose
0.5 mg
Frequency
Every other day
Weeks
1-16
Category
orals

May need 0.5 mg EOD due to Dbol aromatization in weeks 1-4, then 0.25 EOD

PCT SERM
Nolvadex

50 × 20mg

Dose
20 mg
Frequency
Daily
Weeks
17-20
Category
orals

Start 3 weeks after last Test injection (Deca-ET half-life considerations)

PCT SERM
Clomid

50 × 25mg

Dose
50 mg
Frequency
Daily
Weeks
17-20
Category
orals

50 mg daily × 4 weeks, optionally taper to 25 mg final week

Weekly Protocol

Weeks 1–4: Dbol kickstart + Test + Deca. Weeks 5–14: Test + Deca. Weeks 15–16: Test only (Deca dropped). Weeks 17–20: PCT. Deca's long ester requires a 3-week wait before PCT begins (vs 2 weeks for Test-only).

CompoundDoseFrequencyWeeks
Test Enanthate250 mg2× weekly1-16
Deca Durabolin200 mg2× weekly1-14
Dianabol25 mgDaily1-4
Arimidex0.5 mgEvery other day1-16
Nolvadex20 mgDaily17-20
Clomid50 mgDaily17-20

Expected Outcomes

  • 25–40 lb scale weight over 16 weeks (meaningful water + glycogen retention)
  • 15–30% strength increase on compound lifts
  • Joint-related complaints often resolve (Deca mechanism)
  • Longer PCT window due to 19-nor progestational activity

Support Requirements

Items referenced in the protocol. Some are included in the stack; support-only items may need to be ordered separately.

ArimidexIncluded

Estradiol control throughout

NolvadexIncluded

PCT — primary SERM

ClomidIncluded

PCT — LH/FSH rebound

HCG 5000IURecommended

Optional: testicular volume preservation on-cycle

ProvironRecommended

Optional: libido support (19-nor stacks often reduce libido)

Safety & Warnings

  • 19-nor progestational activity can cause prolactin-driven sides — cabergoline on hand recommended.
  • Dbol is hepatotoxic — do NOT extend past 4 weeks. Liver panel at week 5.
  • Deca kills libido in most users without testosterone dominance — keep Test dose ≥ Deca dose.
  • Longer clearance = longer PCT wait. Don't start PCT at week 15.
  • Not a first cycle. If you haven't done a test-only cycle, start there.

Frequently Asked

Why not run Dbol the whole cycle?

Hepatotoxicity. 4 weeks at 25 mg is within most researchers' tolerance window; 8 weeks at any dose stresses the liver meaningfully. Kickstart is the evidence-based use.

Can I swap Deca for EQ (Boldenone)?

Yes — EQ is a reasonable swap if prolactin issues are a concern. Different profile (more vascularity, less mass, longer ester). Dose 400–600 mg/wk, 16-week cycle.

Why 3-week wait before PCT?

Deca has a ~15-day half-life (Decanoate ester). Starting PCT while Deca is still suppressing HPTA wastes the SERM window. 3 weeks gives Deca time to clear meaningfully.

Research disclaimer

All stack suggestions reflect the published literature and are provided for research-reference purposes only. Individual protocols require compound-specific planning. Consult the stacking theory guide before designing your protocol. Not medical advice.