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)
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