SRW Rpr¹ Men’s Health & Vitality Supplement

Product Overview

SRW Rpr¹ Men's Health addresses the progressive androgen decline that begins in men in their late 30s to early 40s — a phase characterised by declining free testosterone, increasing sex hormone-binding globulin (SHBG), reduced libido, declining physical stamina, and early benign prostatic hyperplasia (BPH) risk. This trajectory, sometimes termed "andropause" or late-onset hypogonadism, is well documented in the Endocrine Society clinical practice guidelines and represents a major driver of metabolic and quality-of-life decline in middle-aged and older men across Singapore's ageing population.

The formulation's primary active, LJBOOST® Tongkat Ali, uses patented microencapsulation technology to protect Eurycoma longifolia standardised extract through gastric transit, improving bioavailability compared to unformulated Tongkat Ali extracts. Eurycoma longifolia has been evaluated in multiple human randomised controlled trials demonstrating effects on free testosterone, SHBG reduction, and subjective measures of libido and vitality. Saw Palmetto (Serenoa repens) berry extract provides complementary prostate health support by inhibiting 5-alpha reductase, the enzyme responsible for converting testosterone to dihydrotestosterone (DHT) — elevated DHT being the primary driver of BPH. Lycopene, a carotenoid found in high concentrations in prostate tissue, provides antioxidant defence specifically within the prostate gland.

Supplement Facts

Clinical Applications

• Testosterone support and SHBG modulation: Eurycoma longifolia (Tongkat Ali) standardised extracts have been assessed in human RCTs demonstrating increases in free testosterone, reductions in sex hormone-binding globulin (SHBG), and improvements in subjective measures of vitality and libido in middle-aged men — with favourable safety profiles at study doses.
• Prostate health maintenance: Saw Palmetto berry extract inhibits both isoforms of 5-alpha reductase (types I and II), reducing intraprostatic DHT concentration. Multiple systematic reviews, including a Cochrane meta-analysis, have documented Saw Palmetto's role in improving lower urinary tract symptoms (LUTS) associated with early benign prostatic hyperplasia.
• Prostate antioxidant defence: Lycopene is selectively accumulated in prostate tissue at concentrations higher than any other organ; epidemiological studies associate higher lycopene intake with lower risk of prostate oxidative stress. As an antioxidant, lycopene quenches singlet oxygen and inhibits lipid peroxidation in prostatic cells.
• Physical vitality and energy: By supporting healthy testosterone within the physiological range, Rpr¹ complements resistance training and aerobic exercise in middle-aged men seeking to maintain muscle mass, energy levels, and recovery capacity as endogenous androgen production declines with age.
• Sexual health and libido: Tongkat Ali standardised extracts at therapeutic concentrations have been associated with improvements in erectile function scores (IIEF) and self-reported libido in RCTs conducted in men with late-onset hypogonadism, providing an evidence-based botanical alternative to pharmacological intervention for borderline cases.
• Preventive men's health supplementation: Suitable for Singapore men aged 40+ seeking evidence-based botanical supplementation for hormonal balance, prostate health, and physical vitality as part of a comprehensive preventive health strategy alongside regular physical activity and medical monitoring.

Frequently Asked Questions

Q: What is LJBOOST® and how does it improve Tongkat Ali bioavailability?
A: LJBOOST® is a patented microencapsulation technology applied to Eurycoma longifolia standardised extract. The microencapsulation process protects the bioactive eurycomanone and glycoprotein fractions through gastric acid exposure, enabling intestinal release where pH conditions are optimal for absorption. This technology enhances the consistency and bioavailability of the active fractions compared to standard Tongkat Ali extracts, which may be partially degraded in the gastric environment.

Q: How long does SRW Rpr¹ take to show noticeable effects?
A: Human clinical trials of Eurycoma longifolia standardised extracts have documented improvements in testosterone-related parameters over 4–12 weeks of daily supplementation. Saw Palmetto effects on lower urinary tract symptoms typically manifest over 4–8 weeks of continuous use. SRW Laboratories recommends a minimum 90-day trial for comprehensive hormonal and prostate health assessment. Baseline and follow-up testosterone and PSA testing under a physician's guidance is advisable for men over 50.

Q: Is SRW Rpr¹ a replacement for testosterone replacement therapy (TRT)?
A: No. SRW Rpr¹ is a health supplement designed to support healthy testosterone levels within the physiological range — it is not a testosterone replacement therapy and does not introduce exogenous androgens. Men with clinically diagnosed hypogonadism (low testosterone confirmed by repeated serum testing with associated symptoms) should discuss prescription TRT options with an endocrinologist or urologist. Rpr¹ may be appropriate as a supportive supplement alongside lifestyle modifications in men with borderline or low-normal testosterone.

Q: Should PSA (prostate-specific antigen) levels be monitored while taking SRW Rpr¹?
A: Men over 50, or those with a family history of prostate conditions, should maintain regular PSA monitoring regardless of supplementation, as per standard preventive screening guidelines. While Saw Palmetto may slightly reduce PSA levels (making it important to inform your urologist of supplementation before PSA testing), lycopene and Tongkat Ali at supplement doses have not been associated with significant PSA elevation in published studies. Always inform your physician of all supplements being taken before prostate screening.

Q: Is SRW Rpr¹ available through Singapore healthcare providers?
A: Yes. EMIS Asia supplies SRW Rpr¹ to Singapore integrative medicine clinics, men's health practitioners, and corporate wellness programmes. As a health supplement under Singapore's HSA Health Products Act, Rpr¹ does not require medical device registration. Bulk procurement and institutional pricing are available for eligible healthcare providers.