Included in this kit:
1 × RAD-140 | 100 pellets, 10 mg each
1 × YK-11 | 100 pellets, 10 mg each
1 × MK-677 | 100 pellets, 10 mg each
Intensive Growth Kit
£159.70 Original price was: £159.70.£139.70Current price is: £139.70.
Available on backorder
RAD-140 SAFETY DATA SHEET
YK-11 SAFETY DATA SHEET
MK-677 SAFETY DATA SHEET
The Intensive Growth Kit is a three-compound combination designed for advanced preclinical investigation of hypertrophic signalling beyond conventional anabolic limits. It pairs a high-potency SARM with a myostatin-modulating steroidal SARM and a long-acting growth hormone secretagogue, forming a research framework that engages androgen receptor activation, follistatin upregulation, and sustained IGF-1 signalling within a single experimental design.
The mechanistic rationale lies in the inclusion of YK-11, a compound with distinctive activity at the intersection of AR modulation and myostatin pathway suppression. RAD-140 supplies tissue-selective AR agonism, MK-677 contributes elevated GH and IGF-1 levels, and YK-11 modulates follistatin expression to attenuate myostatin-mediated growth inhibition. Together they form a multi-axis hypertrophy model in which conventional AR signalling is supplemented by suppression of negative regulatory pathways.
Included in this kit:
- 1 × RAD-140 | 100 pellets, 10 mg active compound per pellet
- 1 × YK-11 | 100 pellets, 10 mg active compound per pellet
- 1 × MK-677 | 100 pellets, 10 mg active compound per pellet
Total: 300 pellets / 3,000 mg active compound.


Compound roles in this bundle:
RAD-140 (Testolone) – high-potency non-steroidal SARM providing tissue-selective AR agonism, with reduced off-target activity in prostate and dermal tissues.
YK-11 – steroidal SARM and myostatin modulator contributing the follistatin upregulation axis, with documented hypertrophic activity exceeding that of conventional non-steroidal SARMs in in vitro models.
MK-677 (Ibutamoren) – ghrelin receptor agonist supplying the somatotropic component through sustained GH and IGF-1 elevation.
Combined research applications:
- Preclinical models of advanced hypertrophic signalling beyond AR-mediated limits
- Studies of follistatin and myostatin pathway modulation alongside AR stimulation
- Investigation of myogenic differentiation and hypertrophic activity in muscle precursor cell models
- Research into bone mineral density under combined AR and somatotropic stimulation
- Comparative analysis of three-pathway anabolic stimulation versus AR-only controls
This kit is positioned as an intensive multi-pathway anabolic combination featuring high-potency compounds with overlapping anabolic mechanisms. Due to YK-11’s potential for partial suppression of endogenous testosterone in research models, investigators should account for HPG-axis monitoring within the experimental design and consider appropriate post-cycle endocrine recovery protocols.
⚠ Important Note: This product is supplied strictly for laboratory research use only. It is not approved for human consumption or therapeutic use. Not intended to diagnose, treat, cure, or prevent any disease.
| Delivery - UK | Next working day |
|---|---|
| Delivery - Worldwide | 5-7 working days + customs processing time (varies) |
| Stock levels | Low |
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