LGD-4033 and MK-677 Stack

$124.00

Category: SARMs Stacks

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LGD-4033 and MK-677 Stack For Sale

Buy LGD-4033 and MK-677 Stacks with a 98% Purity or Higher

Our LGD-4033 and MK-677 stack includes one discounted 30 mL, 10 mg/mL bottle of LGD-4033 and one discounted 30 mL, 25 mg/mL bottle of MK-677. Stack the savings!

About All Products

Each bottle includes a graduated 1 mL glass pipette for convenient measurement.
Glass bottles with UV resistance to minimize degradation.
Tamper-proof seals to ensure safety in transit.
Less than 5% variance in concentration, guaranteeing consistency.
Formulated and packaged to prevent evaporation in storage.
SKU: 24

FAQ For LGD-4033 and MK-677 Stack

What distinguishes LGD-4033 from other selective androgen receptor modulators (SARMs) in terms of tissue selectivity?

LGD-4033, also known as ligandrol, is considered one of the most tissue-selective SARMs available. This means that it has a high affinity for androgen receptors (ARs) in muscle tissue and a relatively low affinity for ARs in other tissues, such as the prostate gland and breast tissue. This selectivity helps to minimize the risk of side effects associated with non-selective androgenic compounds.

What is the primary mechanism of action of MK-677?

MK-677, also known as ibutamoren, binds to the ghrelin receptor in the hypothalamus, which is a region of the brain that controls growth hormone (GH) release. By binding to this receptor, MK-677 mimics the effects of ghrelin, a hormone that stimulates GH release. This leads to increased GH levels.

Is LGD-4033 liver toxic?

Some of the known SARMs include enobosarm (Ostarine, MK-2866 or S-22), andarine (S4), ligandrol (LGD-4033), and testolone (RAD-140). The liver injury in the case of SARMs is thought to be idiosyncratic, extrapolating a similar mechanism to androgenic steroids.

Why is Sports Technology Labs the best place to buy SARM Stacks online?

A recent study involving chemical analyses of 44 different products sold and marketed as selective androgen receptor modulators on the internet revealed that quality control in this industry varies significantly from one company to the next.

Only 52% of the products tested contained the product advertised, 59% contained amounts that differed from the label, a shocking 39% contained other unapproved drugs, 25% contained substances not listed on the label, and 9% contained no active substance at all.

It is critical when performing research with SARMs to only purchase the highest quality, verified by third-party analysis.

If you are trying to figure out where to buy SARMs, there appears to be no shortage of options out there. Sports Technology Labs is the best place to buy SARMs online because of their consistent, verifiable, high-quality products, safe bottling and packaging, fast shipping, and excellent customer service.

When you buy SARMs from Sports Technology Labs, you are choosing the highest quality ingredients. Minimum 98% pure compounds tested and certified by accredited American third-party labs, suspended in USP-grade (the highest grade) PEG-400, bottled in America.

Our products come in glass bottles with fixed glass droppers to prevent the leaching of unwanted plasticizers like BPA, and to avoid contamination when using external measuring tools.

We run a transparent business, with no discreet payment methods necessary and no misrepresentation of our products, only the highest quality research chemicals available online, secured by our 60-day money-back guarantee.

All Sports Technology Labs SARMs are third-party tested by MZ Biolabs, an independent laboratory based in Arizona. Each batch is bottled and tested in the USA to ensure accuracy and purity. Our Certificates of Analysis confirm that products meet the listed specifications:

Ligandrol / LGD-4033

Date: 10/26/25
Purity Level: 99.74%

Data on Our Liquid LGD-4033 for Sale

CAS Number: 1165910-22-4
Formula: C14H12F6N2O
Molar Mass: 338.258 g/mol
Half-life: 24-36 hours
Class: Selective androgen receptor modulator
Storage: Store in a cool, dry place away from direct sunlight to maximize shelf life.

Data on Our Liquid MK-677 for Sale

CAS Number: 159752-10-0
Formula: C27H36N4O5S
Molar Mass: 528.662 g/mol
Half-life: 24 hours
Class: Ghrelin agonist, growth hormone-releasing agent
Storage: Store in a cool, dry place away from direct sunlight to maximize shelf life.

Abuse Warning

Selective androgen receptor modulators are investigational compounds still awaiting FDA approval and are not dietary supplements. At Sports Technology Labs, we are chemical suppliers, not medical doctors, and our expertise is sourcing and quality control.

Sports Technology Labs does not encourage or condone consumer use of SARMs products; they are for research purposes only. Anecdotal reports and guides may not match those used in carefully designed medical research protocols and may pose a serious risk of adverse effects in users.

Individual variables, comorbidities, and polypharmacy can also contribute significantly to the risk of health problems.

Selective androgen receptor modulators should only be used under the supervision and direction of a medical doctor or designated research authority. We strongly discourage the use of SARMs for performance enhancement in sports and bodybuilding, and warn against “bro science” and peer consensus when making decisions about health.