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Prosta-Strong

Irwin Naturals
4.4
★ ★ ★ ★ ★
(1492 ratings)
Saw Palmetto 320 mg
Stinging Nettle 100 mg
Green Tea 40 mg
Fish Oil 2028 mg
Product Image
Score66
A prostate-focused blend has a credible saw palmetto core and useful companion ingredients. Weak standardization, opaque fish-oil actives, and a heavy serving burden limit it.
How scoring works
Quantity:90 Softgel(s) • (22 servings)
Goals:
Hair Health

Score 66

A prostate-focused blend has a credible saw palmetto core and useful companion ingredients. Weak standardization, opaque fish-oil actives, and a heavy serving burden limit it.
How scoring works
$34.99($1.59 per serving)
Vitacost
$ 34.99
Amazon
$ 0.00
iHerb
$ 34.99
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Analysis

Saw palmetto is present at a commonly used extract amount and is supported by quercetin, pollen extract, nettle, pygeum, pumpkin, and zinc. The fish-oil softgel provides an oil-based delivery environment for the lipid-soluble ingredients.

Saw palmetto fatty-acid standardization is not stated, and fish oil lacks EPA and DHA amounts. Nettle, green tea, pygeum, phytosterols, and lycopene are modest or incompletely characterized, so the formula has more breadth than dose depth.

The four-softgel daily serving is burdensome and the serving value is weak. It best fits users specifically seeking a comprehensive prostate blend who can review its hormone-related and medication considerations.

Who is it for
  • Adult men seeking a broad prostate formula
  • Users comfortable taking four softgels daily
  • People able to review hormone-related medication fit
Best for
  • Prostate-oriented botanical support
  • Saw palmetto plus nettle and pygeum
  • Users who prefer an oil-based multi-ingredient formula

Pros

  • Full saw palmetto extract amount
  • Several complementary prostate botanicals
  • Includes zinc and quercetin

Cons

  • Saw palmetto fatty-acid standardization is missing
  • EPA and DHA are not disclosed
  • Four-softgel serving is inconvenient

Warnings

  • Saw palmetto can affect androgen-related pathways and needs extra care around hormone-sensitive conditions or related treatment.
  • Fish oil makes the formula unsuitable for people with a fish allergy and may add to bleeding risk with anticoagulants.
  • Green tea caffeine is not quantified, which matters for caffeine-sensitive users.
  • BioPerine may alter absorption of some medicines, so users with complex drug regimens should check compatibility.

Nutrient quality

74 High impact

Saw palmetto has a commonly used total with disclosed fatty acids, while complementary prostate botanicals broaden the formula. Several additions are modest, fish-oil actives remain unclear, and combined oil and botanical effects may increase bleeding tendency for susceptible users.

Ingredient transparency

69 High impact

Most main totals and several active markers are stated. EPA, DHA, some extract ratios, complete directions, and softgel excipients remain missing.

Customer satisfaction

66 High impact

The fair average rating and large review count make the aggregate satisfaction signal reasonably dependable. No detailed review text was provided, so recurring complaints and purpose alignment cannot be assessed.

Value for money

54 Moderate impact

A coherent prostate formula and meaningful saw-palmetto amount provide some value. High serving cost, many small additions, and incomplete fish-oil detail weaken competitiveness.

Report analysis

Goals

Hair Health
Impact
Moderate effect
C Goal FitC+ Strength of SupportD+ CoverageC Formula Quality
Vitamin D · 0.7 mcgZinc · 11 mg

Saw palmetto is supplied at a commonly used extract amount and may suit people concerned about androgen-related shedding. Zinc and related prostate botanicals provide limited additional support for that hormonal pathway.

The extract lacks fatty-acid standardization, so its active potency cannot be verified. The formula is designed for prostate support and does not provide structural proteins, sulfur amino acids, or broad follicle nutrition.

Study evidence
Saw Palmetto Supportive 5 studies
Vitamin D Disputed 34 studies
Zinc Supportive 22 studies

Ingredients

IngredientAmount per serving
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
11 mg
Fish Oil
2028 mg
Fatty Acids
608.4 mg
Saw Palmetto extract
320 mg
Fatty Acids
272 mg
Graminex flower pollen extract
200 mg
Quercetin
200 mg
Stinging Nettle extract
100 mg
Pygeum extract
50 mg
Phytosterols
6.5 mg
Green Tea extract
40 mg
Polyphenols
20 mg
Pumpkin extract
24 mg
Fatty Acids
6 mg
Lyc-O-Mato Tomato extract
20 mg
Lycopene
1.2 mg
Beta-Sitosterol
6 mg
BioPerine Complex
6 mg
Bioperine Black Pepper extract
0 NP
Ginger extract
0 NP
Adults 18–50 Women
Report overview
Saw Palmetto · 320 mg OverallScore47
D Active Ingredient Quality & BioavailabilityD+ Dose, Safety & Label TransparencyD- Value

The oil-compatible format supports absorption, but extract standardization and purity details are incomplete. The daily amount matches the established extract target. The broader formula offers partial value, but the saw palmetto component has important limitations.

Stinging Nettle · 100 mg OverallScore40
F Active Ingredient Quality & BioavailabilityC+ Dose, Safety & Label TransparencyF Value

The label identifies an extract but not the plant part, concentration ratio, or active markers. The 100 mg amount is below a stand-alone target, though other primary actives add context and the weight is clear. The high serving cost makes value poor for the disclosed nettle contribution.

Green Tea · 40 mg OverallScore12
F Active Ingredient Quality & BioavailabilityF Dose, Safety & Label TransparencyF Value

Black pepper extract may help absorption of the small green tea component. No catechin standardization, EGCG yield, or caffeine content is disclosed. The prostate blend is costly and cannot be valued as a targeted EGCG source.

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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