Hi-Tech Pharmaceuticals Protropin is a powerful HGH releaser built on two independent clinical studies — the first from the University of Rome documenting that oral administration of 1,200mg L-Arginine-2-Pyrrolidone-5-Carboxylate combined with 1,200mg (S)-2,6-Diaminocaproic Acid provoked a reproducible release of pituitary somatotrophin (growth hormone) and insulin, with biological activity confirmed by radioreceptor assay and somatomedin induction — more than 10 times more effective at raising blood HGH levels than L-Arginine alone, yielding an average net GH increase of over 700%. The second study, conducted by USP Labs on PowerFULL® (Mucuna Pruriens standardized to 250mg L-Dopa), documented a 221% increase in HGH from a single dose, alongside a 53%+ increase in natural testosterone and dramatic improvements in sleep quality and recovery. Protropin combines both clinically studied formulas into one product, enhanced with Cyclosome® Technology for increased bioavailability of ingredients not typically well-absorbed orally. Non-hormonal and non-methylated — no PCT required, and safe for both men and women. Take 5 tablets 30 minutes before bedtime. Optimal effectiveness is typically seen within 1-3 weeks of continuous use. Recommended for use up to 8 weeks (2 bottles) before taking a one-month break. For healthy adults 18 years of age or older.†
Supplement Facts — Hi-Tech Pharmaceuticals Protropin (Per 5 Tablets / 30 Servings)
L-Arginine-2-Pyrrolidone-5-Carboxylate — 1,200mg
(S)-2,6-Diaminocaproic Acid — 1,200mg
PowerFULL® Mucuna Pruriens Extract 15% (standardized to 250mg L-Dopa) — 1,750mg
Chlorophytum Borivilianum Extract — 500mg
Other Ingredients: Microcrystalline Cellulose, Phosphatidylcholine 75%, Hydroxypropyl Beta Cyclodextrin (HPBCD), Phytosterols, Magnesium Stearate, Silica
Delivery: Cyclosome® Technology — liposomal cyclodextrin complex, "Trojan Horse" lymphatic delivery bypassing liver inactivation, fast onset with prolonged release
Non-methylated, non-hormonal — no PCT required
Safe for men and women
150 tablets — 30 servings at 5 tablets daily
Take 5 tablets 30 minutes prior to bedtime
Optimal effectiveness typically within 1-3 weeks of continuous, uninterrupted use
Recommended use: up to 8 weeks (2 bottles) before a one-month break, though cycling is not strictly required
For healthy adults 18 years of age or older
Not for pregnant or nursing women
California Prop 65 Warning applies.
The University of Rome Study — 700% Net GH Increase
Protropin's foundation compounds are based on some of the first clinical studies to qualitatively evaluate the secretion of growth factors following stimulation by oral compounds. Researchers at the University of Rome found that a combination of 1,200mg L-Arginine-2-Pyrrolidone-5-Carboxylate and 1,200mg (S)-2,6-Diaminocaproic Acid, given orally to male volunteers, was more than 10 times more effective at increasing blood levels of human growth hormone than taking L-Arginine alone — yielding an average net GH increase of more than 700%. According to the researchers, "the association of the two amino acids does result in the release of biologically active GH able to affect peripheral cellular receptors and thus cell growth in general" — meaning the growth hormone released wasn't just detectable, it was functionally active, as confirmed by radioreceptor assay and somatomedin induction testing.†
The PowerFULL® / USP Labs Study — 221% HGH, 53%+ Testosterone
The second clinical study behind Protropin was conducted by USP Labs on PowerFULL® — the branded Mucuna Pruriens extract standardized to 250mg of L-Dopa. This study scientifically documented a 221% increase in HGH from a single dose, alongside a significant 53%+ increase in natural testosterone. The study also showed a dramatic increase in sleep quality and increased recovery. Mucuna Pruriens' L-Dopa content crosses the blood-brain barrier and converts directly to dopamine — activating the dopamine neurons of the brain essential for normal movement and sensory-motor integration, which is the mechanistic basis for Protropin's documented improvement in athletic movements and increased contractile strength during weight training.†
Chlorophytum Borivilianum — The Adaptogenic Layer
Chlorophytum Borivilianum Extract contributes specific triterpene steroid saponins and sapogenins that function as adaptogens — compounds that help the body respond more efficiently to physical and hormonal stress. Hi-Tech describes hormonal adaptogens like the alkaloids found in this extract as helping "supercharge" hormonal output — supporting increased testosterone release, reduced estrogen, and overall improved stress resilience, complementing the GH-releasing mechanisms of the formula's other three compounds.†
Why Bedtime Dosing Matters
Take 5 tablets 30 minutes prior to bedtime — this timing is deliberate, not arbitrary. The body's largest natural pulse of growth hormone release occurs during deep sleep (particularly slow-wave sleep), making the nighttime window the most physiologically relevant time to support and potentially amplify the body's own GH secretion pattern. This also aligns with Protropin's documented sleep quality improvements — users report both enhanced sleep and enhanced recovery as complementary, overlapping benefits of nighttime dosing.†
Non-Hormonal — No PCT, Safe for Women
Unlike Hi-Tech's androgenic prohormone lineup (Sustanon 250, Trenabol, Halodrol, and others), Protropin works entirely through non-hormonal amino acid and adaptogenic pathways to stimulate the body's own natural growth hormone release — it does not introduce exogenous androgens or DHEA-derived compounds. This means no PCT is required after use, and the product is considered safe for both men and women, a meaningful distinction from the "men only, 21+" restriction that applies to most of Hi-Tech's other prohormone-category products.†
Frequently Asked Questions
Do I need to cycle Protropin?
You do not strictly need to cycle Protropin, but it is recommended. Hi-Tech suggests using it for up to 8 weeks (2 bottles) before taking a month off, as general good practice for any supplement used consistently over extended periods.†
Do I need a PCT after using Protropin?
No — a PCT is not required, since Protropin is not a prohormone. It works through non-hormonal amino acid and adaptogenic pathways rather than introducing exogenous androgens. It can be stacked with your prohormone of choice if you're also running an androgenic cycle.†
Can women use Protropin?
Yes — Protropin is a non-hormonal growth hormone support formula safe for use by both men and women. It is not designed to raise testosterone specifically in women; its primary purpose is supporting HGH release, sleep quality, and recovery.†
What can Protropin be stacked with?
Protropin pairs well with Hi-Tech Somatomax or similar sleep/GH support products for combined nighttime recovery benefits, and can also be stacked with any prohormone cycle since it doesn't share overlapping hormonal mechanisms.†
How to Take Hi-Tech Pharmaceuticals Protropin
Take 5 tablets 30 minutes prior to bedtime. Optimal effectiveness is typically felt within 1-3 weeks of continuous, uninterrupted use. Recommended use is up to 8 weeks (2 bottles) before taking a one-month break, though strict cycling is not required. For healthy adults 18 years of age or older. Not for pregnant or nursing women. Consult your healthcare provider before use, especially if taking any prescription or over-the-counter medication or if you have any pre-existing medical condition. Discontinue use and consult a healthcare professional immediately if you experience any adverse reaction. Do not exceed the recommended serving. California Prop 65 Warning applies.†
Why Buy at Get Yok'd
Real-time inventory across all five Southern California stores
Available in Burbank, Glendale, Glendale Galleria, Pasadena, and North Hollywood
Authorized Hi-Tech Pharmaceuticals retailer — carrying Protropin alongside Somatomax and the full Hi-Tech recovery and growth factor lineup
Staff who can help you incorporate Protropin into a complete nighttime recovery, sleep, and growth hormone support protocol
One of the best loyalty programs in the supplement industry — earn rewards on every purchase
Who Should Exercise Caution with Protropin
For healthy adults 18 years of age or older only
Not for pregnant or nursing women
Individuals taking dopamine-affecting medications (Parkinson's medications, antipsychotics) should consult a physician — Mucuna Pruriens' L-Dopa content directly affects dopamine pathways
Individuals with diabetes or blood sugar regulation concerns should consult a physician — GH release can affect insulin sensitivity
Consult your healthcare provider before use, especially if taking any prescription or over-the-counter medication or having any pre-existing medical condition
Discontinue use and consult a healthcare professional immediately if you experience any adverse reaction
Do not exceed the recommended serving
California Prop 65 Warning applies.
Keep out of reach of children.
†These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.