Testosterone Booster Extra Strength by Purely Optimal — Ingredients, Evidence & Safety

🟢 100/100

This product looks safe

No ingredients exceed tolerable upper intake levels
22% of ingredients have research evidence

B Label Compliance Grade

Product Label

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Label Data

2 Capsule(s) Serving Size

30 Servings

Other Combinations Product Type

22% Evidence Coverage

Supplement Facts — Evidence Check

Horny Goat Weed 4:1 extract

1000 mg

Maca

150 mg

📊 Market median: 500.0mg (357 products) 📚 1 studies — no high-quality reviews

This product: 150mg

Tribulin Tribulus herb extract

100 mg

Saw Palmetto

100 mg

📊 Market median: 320.0mg (426 products) 📚 24 studies (Tier A: 0, B: 5)

This product: 100mg

Citrulline Malate

100 mg

📊 Market median: 2000.0mg (275 products)

Median 2000.0mg This product: 100mg

L-Arginine

50 mg

📊 Market median: 500.0mg (143 products)

This product: 50mg

Tongkat Ali

50 mg

Panax Ginseng

50 mg

📊 Market median: 450.0mg (390 products) 📚 155 studies (Tier A: 0, B: 63)

This product: 50mg

Fenugreek seed 4:1 extract

50 mg

📊 Market median: 500.0mg (193 products) 📚 7 studies — no high-quality reviews

This product: 50mg

Other Ingredients

Vegetable Cellulose Magnesium Stearate Silicon Dioxide Microcrystalline Cellulose

Label Claims — Verification

❓ All Other

❓ Structure/Function

All Other (97% of products) Structure/Function (91% of products) Nutrient (29% of products) No Claim (2% of products)

Target Groups

Vegetarian Adult (18 - 50 Years)

Product Information

📋 Directions for Use

Suggested Use: As a dietary supplement, take two (2) capsules once a day with or without food or as directed by your health care professional.

⚠️ Warnings & Precautions

Caution: Do not exceed recommended dose.

Pregnant or nursing mothers, children under the age of 18, and individuals with a known medical condition should consult a physician before using this or any dietary supplement.

Pregnant or nursing mothers, children under the age of 18, and individuals with a known medical condition should consult a physician before using this or any dietary supplement. Keep out of reach of children.

Do not use if safety seal is damaged or missing.

🧪 Formulation Notes

With Tribulin & L-Arginine

Builds lean muscles Maintains energy & stamina Supports testosterone levels Improves physical performance

Professional grade

Vegetarian friendly

Additional Information

Store in a cool, dry place.

100% natural

cGMP Facility Good Manufacturing Practice Certification

Lab Tested 3rd Party Certified for Purity & Potency

Product Details

UPC / SKU X002I80SUZ

DSLD Entry Date 2021-02-25

Product Type Other Combinations

Form Capsule

Brand Purely Optimal

DSLD ID 244063

Data Updated 2026-04-11

Research Evidence

12 Research Sources

45 Avg Quality Score

6 Rct

5 Clinical Trial

1 Meta Analysis

C Effect of food sources of nitrate, polyphenols, L-arginine and L-citrulline on endurance exercise performance: a systematic review and meta-analysis of randomised controlled trials

Meta Analysis Journal of the International Society of Sports Nutrition 2021

PubMed DOI

C Effects of L-Citrulline Supplementation on Endothelial Function and Blood Pressure in Hypertensive Postmenopausal Women.

Rct Nutrients

PubMed DOI

C Effects of Acute Citrulline Malate Supplementation on CrossFit® Exercise Performance: A Randomized, Double-Blind, Placebo-Controlled, Cross-Over Study.

Rct Nutrients

PubMed DOI

C Impact of L-Citrulline Supplementation and HIIT on Lipid Profile, Arterial Stiffness, and Fat Mass in Obese Adolescents with Metabolic-Dysfunction-Associated Fatty Liver Disease: A Randomized Clinical Trial.

Rct Nutrients

PubMed DOI

C Effect of L-Citrulline Supplementation on NAFLD in Adolescents With Obesity

Clinical Trial ClinicalTrials.gov 2021

ClinicalTrials.gov

C Effects of L-Citrulline or Citrulline-malate on Neuromuscular Performance in Resistance-trained Adults

Clinical Trial ClinicalTrials.gov 2022

ClinicalTrials.gov

C Acute effects of Nitrosigine® and citrulline malate on vasodilation in young adults.

Rct Journal of the International Society of Sports Nutrition

PubMed DOI

C Effects of Combined Versus Single Supplementation of Creatine, Beta-Alanine, and L-Citrulline During Short Sprint Interval Training on Basketball Players' Performance: A Double-Blind Randomized Placebo-Controlled Trial.

Rct International journal of sports physiology and performance

PubMed DOI

C Acute effects of combined supplementation of L-arginine and citrulline malate on aerobic, anaerobic, and CrossFit exercise performance.

Rct Scientific reports

PubMed DOI

C L-Citrulline in Peripheral Artery Disease

Clinical Trial ClinicalTrials.gov 2016

ClinicalTrials.gov

View all evidence for Citrulline →