Vitamin
Optimum Nutrition
6
Overall AI Score
Based on 2 reviews
Above Average

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Quick Facts

Form
Tablets
Dose
75+ ingredients per 3-tablet serving
Serving
3 tablets
Servings
50
Vegan
No
Made in
USA

Optimum Nutrition Opti-Men Multivitamin - 150 Tablets

by Optimum Nutrition

Informed Sport Certified GMP Certified Third-Party Tested

A sports-oriented men's multivitamin from the world's best-selling sports nutrition brand, featuring over 75 active ingredients across four proprietary blends: Amino Men, Phyto Men, Viri Men, and Enzy Men. Each three-tablet serving delivers a full spectrum of vitamins and minerals plus 1g of free-form amino acids and 18 fruit and vegetable concentrates. The 150-tablet bottle provides 50 servings. It is one of the most popular gym-focused multivitamins in the UK, widely available at supplement retailers and gym shops.

AI

AI Review Summary

Optimum Nutrition Opti-Men is a popular sports multivitamin with an impressive 75+ ingredient count, though the proprietary blend approach means many of those ingredients — particularly the amino acids and botanical extracts — are present in doses too small to be individually effective. The core vitamin and mineral profile is decent, and the Informed Sport certification is valuable for competitive athletes. However, the three-tablet-per-day serving, use of cheaper B-vitamin forms (cyanocobalamin, pyridoxine HCl), and premium price make it harder to justify versus more transparent alternatives.

Based on 2 reviews from Reddit, Amazon, YouTube, and other sources
Effectiveness How well the product works based on user reviews
6/10
Average
Ingredient Quality Clean label, bioavailable forms, minimal fillers
5/10
Average — Some unnecessary fillers present
Value for Money Price relative to quality and quantity
5/10
Average
Side Effects Profile Higher = fewer/milder side effects reported
7/10
Good — Minor side effects in small number of users
Certifications & Testing Third-party testing, GMP, and quality certifications
9/10
Excellent — Multiple independent certifications
Overall Score Weighted overall recommendation
6/10
Average

Pros

  • +Informed Sport certified — safe for drug-tested athletes
  • +Solid core vitamin and mineral doses
  • +Brand recognition and widespread UK availability
  • +Includes fruit, vegetable, and botanical blends

Cons

  • -Proprietary blends hide individual ingredient doses
  • -Uses cheaper B-vitamin forms (cyanocobalamin not methylcobalamin)
  • -Three tablets per serving is inconvenient and the tablets are large

Best For

Gym-goers wanting an all-in-one sports multivitamin Drug-tested athletes needing Informed Sport certification Those who prefer a recognised sports nutrition brand

Watch Out

  • !Proprietary blend amino acid doses are too low to provide meaningful sports benefits
  • !Contains oyster extract — not suitable for shellfish allergies

Ingredients & Composition

Active Ingredients

Vitamin A (as Beta-Carotene)
3000 IU
Vitamin C (as Ascorbic Acid)
300mg
Vitamin D3
1500 IU (37.5mcg)
Vitamin E (as D-Alpha Tocopheryl Acetate)
200 IU
Vitamin B6 (as Pyridoxine HCl)
50mg
Vitamin B12 (as Cyanocobalamin)
100mcg
Zinc (as Zinc Oxide)
15mg
Selenium (as Sodium Selenite)
200mcg
Amino Men Blend
1g (L-Arginine, L-Glutamine, BCAAs)
Phyto Men Blend
100mg (18 fruit/vegetable concentrates)
Viri Men Blend
60mg (Saw Palmetto, Ginseng, Ginkgo)

Other Ingredients

Microcrystalline Cellulose, Stearic Acid, Croscarmellose Sodium, Hydroxypropyl Methylcellulose (HPMC), Magnesium Stearate, Silica, Glycerin, Sunflower Oil

Clean Label Analysis

The excipient list is typical for a heavily compressed multi-ingredient tablet. Magnesium stearate and silica are present as standard flow agents. The proprietary blend approach makes it difficult to assess individual ingredient doses within the blends. Acceptable for the product type but not the cleanest formulation.

Allergens: Contains: shellfish (oyster). Free from: dairy, gluten

Quality & Testing

Third-Party Tested

This product has been independently tested by third-party laboratories for purity, potency, and safety.

Certifications

Informed Sport Certified
GMP Certified

Additional Specifications

Type
Vitamin
Form
Tablets
Dose
75+ ingredients per 3-tablet serving
Serving Size
3 tablets
Fillers Analysis
The excipient list is typical for a heavily compressed multi-ingredient tablet. Magnesium stearate and silica are present as standard flow agents. The proprietary blend approach makes it difficult to assess individual ingredient doses within the blends. Acceptable for the product type but not the cleanest formulation.
Allergens
Contains: shellfish (oyster). Free from: dairy, gluten
Made In
USA

How We Score Supplements

Our AI analyses reviews from Reddit, Amazon, YouTube, and specialist forums, then scores each product on a 1-10 scale across six evidence-based categories:

1

Effectiveness

How well the product delivers its claimed benefits, based on aggregated user experiences.

2

Ingredient Quality

Bioavailable forms, clean label, minimal fillers, no artificial junk. Higher = cleaner.

3

Value for Money

Price per serving relative to ingredient quality and effectiveness.

4

Side Effects Profile

Higher score = fewer side effects. 10 means virtually no adverse reactions reported.

5

Certifications & Testing

Third-party lab testing, GMP certification, and independent quality verification.

6

Overall Score

Weighted combination of all factors. Our bottom-line recommendation.

Disclaimer: AIScored provides AI-generated summaries based on publicly available reviews and product information. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Affiliate links may earn us a commission at no extra cost to you.