Prosta-Strong

Prosta-Strong

Irwin Naturals4.5 (1,423 ratings)
Format:Softgel Quantity: 180 Softgel(s) · 45 servings
Goals
$52.65 $1.17 per serving

Product analysis

43 out of 100

Prosta-Strong combines several plant ingredients, but most preparations are unspecified and one mixed ingredient lacks a clear identity and amount. Those gaps make its contents difficult to compare.

AI assessment of the formula, label and price. How scoring works

Nutrient Quality20

Most ingredient preparations are unspecified, leaving quality uncertain. The mixed ingredient also lacks a clear identity, so its quality cannot be confirmed.

Ingredient Transparency62

Most amounts are disclosed, but the unnamed mixed ingredient lacks a stated amount and most forms are missing. Its composition is uncertain rather than confirmed to be omitted.

Value For Money30

The serving cost offers weak value when buying the formula for stinging nettle. Value for the other ingredients remains uncertain.

Customer Satisfaction78

Customer ratings are favorable. The review count provides a substantial base of feedback, without confirming health benefits.

Product Focus45

Possible hair benefits depend on the cause of thinning and the preparation used. A generic saw palmetto extract does not establish the same effects as a specifically identified preparation, while zinc’s nutritional role concerns low intake.

Format
Softgel
Container
180 Softgel(s)
Per serving
$1.17
Customer rating
4.5 · 1,423 ratings
Report analysis

Goals

Hair Health
Impact
Moderate effect
D Ingredient FitF PathwaysA EvidenceA+ Formulation Logic
Vitamin D · 0.7 mcgZinc · 11 mg
Study evidence
Vitamin D Disputed 34 studies
Zinc Supportive 22 studies
Inflammation
Impact
Lower effect
F Ingredient FitF PathwaysC- EvidenceA- Formulation Logic
Vitamin D · 0.7 mcgFish Oil · 2028 mgGreen Tea · 40 mg
Study evidence
Fish Oil Supportive 68 studies
Ginger Supportive 30 studies
Vitamin D Supportive 101 studies
Zinc Supportive 64 studies

Ingredients

IngredientAmount per servingScore
Calories
30 Calorie(s)
Total Fat
2.5 Gram(s)
Saturated Fat
0.5 Gram(s)
Cholesterol
10 mg
Total Carbohydrates
1 Gram(s)
Protein
1 Gram(s)
Vitamin D
0.7 mcg
Zinc (Zinc Picolinate)
11 mg
Fish Oil (Omega-3 Fatty Acids)
2028 mg 6
Saw Palmetto Extract (Fatty Acids)
320 mg 80
Graminex flower Pollen (Lolium perenne) extract
200 mg
Quercetin
200 mg
Stinging Nettle extract
100 mg 74
Pygeum Bark Extract (Phytosterols)
50 mg
Green Tea Leaf Extract (Polyphenols)
40 mg 28
Pumpkin Seed Extract (Fatty Acids)
24 mg
Lyc-O-Mato Tomato extract (Lycopene)
20 mg
Beta-Sitosterol
6 mg
BioPerine Complex
6 mg
Bioperine Black Pepper extract (Piperine)
0 NP
Ginger extract (Gingerols)
0 NP
Men 50+ Men 18–50 Women
Report overview
A+ Composition And Label DisclosureC Composition And Label Disclosure
A serving provides 320 mg of Saw Palmetto extract in 4 softgels; its value hasn't been assessed. The extract states 85% fatty acids. The plant part is also unknown.
How this ingredient is rated

Composition and Label Disclosure100

The extract lists 85% fatty acids.
Marker and Preparation Disclosure
The extract states 85% fatty acids.

Composition and Label Disclosure60

The amount and fatty acid percentage are stated, but the plant part is unknown.
Amount and Label Disclosure
The amount and fatty acid percentage are available, but the plant part is unknown.

Commercial Price and Usability

Value hasn't been assessed.
B+ Composition And Label DisclosureA+ Composition And Label DisclosureF Commercial Price And Usability
A serving lists 100 mg of Nettle Leaf Extract at a high cost per serving. The nettle source is leaf. The extract ratio and marker standardization are not specified.
How this ingredient is rated

Composition and Label Disclosure80

The nettle source is leaf. The nettle is an extract, with no marker standardization or extract ratio specified.
Root or Leaf Identity Disclosure
The nettle source is leaf.
Nettle Preparation and Marker Detail
The nettle is an extract, with no marker standardization or extract ratio specified.

Composition and Label Disclosure100

The serving lists 100 mg of Nettle Leaf Extract.
Nettle Amount Disclosure
The serving lists 100 mg of Nettle Leaf Extract.

Commercial Price and Usability10

The cost per serving is high.
Selected-Serving Price Comparison
The cost per serving is high.
B- Composition And Label DisclosureF Composition And Label DisclosureF Commercial Price And Usability
The 40 mg of green tea leaf extract contains 50% polyphenols; its EGCG amount is unknown. The cost per amount of EGCG cannot be compared because its amount is unknown. The available information does not state the caffeine amount.
How this ingredient is rated

Composition and Label Disclosure70

The 40 mg of green tea leaf extract contains 50% polyphenols; its EGCG amount is unknown.
Declared Green Tea Marker Concentration
The 40 mg of green tea leaf extract contains 50% polyphenols; its EGCG amount is unknown.

Composition and Label Disclosure0

The available information does not state the caffeine amount.
Whole-Product Caffeine Disclosure
The available information does not state the caffeine amount.

Commercial Price and Usability0

The cost per amount of EGCG cannot be compared because its amount is unknown.
Cost per 200 mg Declared EGCG
The cost per amount of EGCG cannot be compared because its amount is unknown.
Report alternatives

Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. The Safety and Efficacy of a Proprietary Bioactive Fatty Acids Extract From Saw Palmetto (Serenoa repens) for Promoting Hair Growth and Reducing Hair Loss in Adults With Self-Perceived Thinning Hair: 90-Day Results.
    Ablon G · Journal of cosmetic dermatology · 2025
    Randomized trial60 participantsHair Health forSaw Palmetto
  2. Effects of dietary supplements on androgenetic alopecia: a systematic review and network meta-analysis.
    Zhou L; Zhu W; Chen Y · Frontiers in nutrition · 2026
    Meta-analysis1,658 participants19 studies pooledHair Health forSaw Palmetto
  3. The Safety and Efficacy of a Novel Saw Palmetto (Serenoa repens) Extract for Promoting Hair Growth in Adults With Self-Perceived Thinning Hair: 180-Day Results.
    Ablon G · Journal of cosmetic dermatology · 2026
    Randomized trial60 participantsHair Health forSaw Palmetto
  4. Beyond Minoxidil: Off-Label Therapies for Male Androgenetic Alopecia-A Systematic Review with Network Meta-Analyses.
    Gupta AK; Compton SAH; Liddy A; Talukder M; Wang T; Bamimore MA · Medicina (Kaunas, Lithuania) · 2026
    Meta-analysis50 participants23 studies pooledHair Health forSaw Palmetto
  5. Comparitive effectiveness of finasteride vs Serenoa repens in male androgenetic alopecia: a two-year study.
    Rossi A; Mari E; Scarno M; Garelli V; Maxia C; Scali E; Iorio A; Carlesimo M · International journal of immunopathology and pharmacology · 2013
    Non-randomized trial100 participantsHair Health forSaw Palmetto
  6. Increased prevalence of vitamin D deficiency in patients with alopecia areata: a systematic review and meta-analysis.
    Lee S; Kim BJ; Lee CH; Lee WS · Journal of the European Academy of Dermatology and Venereology : JEADV · 2018
    Meta-analysis2,039 participants14 studies pooledHair Health forVitamin D
  7. Intralesional vitamin D3 in treatment of alopecia areata: A randomized controlled clinical trial.
    Rashad AF; Elgamal E; Fouda I · Journal of cosmetic dermatology · 2022
    Randomized trial60 participantsHair Health forVitamin D
  8. Vitamin D and its Analogs in Treatment of Mild to Moderate Alopecia Areata: Systematic Review and Meta-Analysis.
    Alsaati AA; Kaliyadan F; Alsaadoun D; Alzakry LM; Alzabadin RA; Hakami TH; Rubaian NFB · Indian dermatology online journal · 2025
    Meta-analysisHair Health forVitamin D
  9. Topical calcipotriol vs narrowband ultraviolet B in treatment of alopecia areata: a randomized-controlled trial.
    El Taieb MA; Hegazy EM; Ibrahim HM; Osman AB; Abualhamd M · Archives of dermatological research · 2020
    Randomized trial60 participantsHair Health forVitamin D
  10. Serum 25 hydroxyvitamin D in non-scarring alopecia: A systematic review and meta-analysis.
    Chen Y; Dong X; Wang Y; Li Y; Xiong L; Li L · Journal of cosmetic dermatology · 2024
    Meta-analysis10,670 participants23 studies pooledHair Health forVitamin D
  11. The effects of minoxidil, 1% pyrithione zinc and a combination of both on hair density: a randomized controlled trial.
    Berger RS; Fu JL; Smiles KA; Turner CB; Schnell BM; Werchowski KM; Lammers KM · The British journal of dermatology · 2003
    Randomized trial200 participantsHair Health forZinc
  12. Incubatory environment of the scalp impacts pre-emergent hair to affect post-emergent hair cuticle integrity.
    Schwartz JR; Henry JP; Kerr KM; Flagler MJ; Page SH; Redman-Furey N · Journal of cosmetic dermatology · 2018
    Randomized trialHair Health forZinc
  13. A comparison of hair quality and cosmetic acceptance following the use of two anti-dandruff shampoos.
    Draelos ZD; Kenneally DC; Hodges LT; Billhimer W; Copas M; Margraf C · The journal of investigative dermatology. Symposium proceedings · 2006
    Randomized trial40 participantsHair Health forZinc
  14. BMI and levels of zinc, copper in hair, serum and urine of Turkish male patients with androgenetic alopecia.
    Ozturk P; Kurutas E; Ataseven A; Dokur N; Gumusalan Y; Gorur A; Tamer L; Inaloz S · Journal of trace elements in medicine and biology : organ of the Society for Minerals and Trace Elements (GMS) · 2015
    Case-control study216 participantsHair Health forZinc
  15. Analysis of serum zinc and copper concentrations in hair loss.
    Kil MS; Kim CW; Kim SS · Annals of dermatology · 2013
    Case-control study342 participantsHair Health forZinc
  16. Dose-dependent effects of fish oil on cardio-metabolic biomarkers in healthy middle-aged and elderly Chinese people: a double-blind randomized controlled trial.
    Song J; Hu M; Li C; Yang B; Ding Q; Wang C; Mao L · Food & function · 2018
    Randomized trial201 participantsInflammation forFish Oil
  17. Eicosapentaenoic acid supplementation alleviates pruritus, enhances skin moisture, and mitigates depression in maintenance hemodialysis patients.
    Lin YL; Wang CL; Chiang TI · Frontiers in nephrology · 2024
    Randomized trial60 participantsInflammation forFish Oil
  18. Lowering effects of fish oil supplementation on proinflammatory markers in hypertension: results from a randomized controlled trial.
    Yang B; Ren XL; Li ZH; Shi MQ; Ding F; Su KP; Guo XJ; Li D · Food & function · 2020
    Randomized trial77 participantsInflammation forFish Oil
  19. The effects of ω-3 fish oil emulsion-based parenteral nutrition plus combination treatment for acute paraquat poisoning.
    Meng Z; Dong Y; Gao H; Yao D; Gong Y; Meng Q; Zheng T; Cui X; Su X; Tian Y · The Journal of international medical research · 2019
    Randomized trial174 participantsInflammation forFish Oil
  20. Effects of Omega-3 Fatty Acid Intake in Patients Undergoing Dialysis: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.
    Liu R; Jiang J; Fu Z; Liu C; Yao L; Quan H · Journal of the American Nutrition Association · 2022
    Meta-analysis49 studies pooledInflammation forFish Oil