PreZilla is a pre-workout supplement manufactured by Quadzilla Fitness. It earned an overall thumbs-down recommendation based on its nutrition label transparency, ingredients, dosing, claims, research rating, and ranking.

This page contains a thumbs-up or down recommendation followed by simple and detailed reports describing the product's effectiveness. The detailed report includes a more in-depth analysis of the product.

A question mark appears next to a section which corresponds to a question in the FAQ. Click it for more information.


PreZilla earned a thumbs-down recommendation. This recommendation is based on the criteria listed below. To earn an overall thumbs-up recommendation, a product must earn a thumbs-up in at least four of the seven areas below. Click on a graded area for an in-depth analysis.

Graded Area Thumb Up or Down
Effectiveness Rating
Ingredient Dosing
Research Rating
Nutrition Label Transparency
Ranking Within Category
Overall Recommendation

Table of Contents

  1. Simple Report
  2. Detailed Report
  3. Ranking Within Category
  4. Summary

PreZilla Simple Report

  • Product Name: PreZilla
  • Manufacturer: Quadzilla Fitness
  • Manufacturer Website: Quadzilla Fitness's Homepage
  • Manufacturer Social Media:
  • Supplement Category: Pre-Workout Supplements
  • Serving Size: 1 scoop (10g)
  • Effectiveness Rating: 1.63 out of 3
  • Number of Ingredients: 24
  • Research Rating: 31.250 (above 60 indicates sufficient research)
  • Nutrition Label Transparency Score: 71%
  • Ranking within Pre-Workout Supplements: 549 out of 570 (bottom third within category)
  • Ranking within all Supplement Products: 1293 out of 1357 (bottom third of all products)

PreZilla Detailed Report

The detailed report provides an in-depth analysis of the product's rating. In addition to showing ratings for each area, this report also provides the required criteria for a thumbs-up in each section.

Effectiveness Rating

PreZilla earned a thumbs-up in this category because its effectiveness rating is 1.63. A product's effectiveness rating must be at least 1.5 to receive a thumbs-up in this area. This effectiveness rating means PreZilla is made up of a mix of both high and low-quality ingredients and may lead to some positive results.

This category illustrates how well a product works based on what the research says about its ingredients. Researchers conduct studies on supplement ingredients to gauge effectiveness. The database grades products on how effective their ingredients are. The effectiveness rating of supplement products is evaluated on a 3 point scale: 3.0 is the most effective, 1.0 is the least effective.


PreZilla earned a thumbs-down in this category because it contains 54% extremely and/or moderately effective ingredients. A product must contain at least 75% extremely and/or moderately effective ingredients to receive a thumbs-up in this area.

This category rates a product's ingredient makeup. A product should contain mostly extremely and/or moderately effective ingredients with little or no ineffective ones. The database categorizes ingredients as extremely, moderately, or ineffective based on conclusions from research articles.

PreZilla contains:

  • extremely effective ingredients: 2
  • moderately effective ingredients: 11
  • ineffective ingredients: 8
  • total ingredients: 24

The following table lists all ingredients found in this product as well as their effectiveness ratings and amounts (if listed).

Ingredient Effectiveness Rating
Folic Acid 400mcg 3 out of 3
Sodium 80mg 3 out of 3
Vitamin B1 (Thiamine) 1.5mg 2.3 out of 3
Caffeine 175mg 2 out of 3
Beta Alanine 750mg 2 out of 3
Taurine Amount not listed. 1.9 out of 3
Creatine Malate 1.5g 1.7 out of 3
Magnesium 48mg 1.6 out of 3
Citrulline Malate Amount not listed. 1.6 out of 3
Betaine Amount not listed. 1.6 out of 3
Phosphorus 120mg 1.5 out of 3
Vitamin B6 2mg 1.5 out of 3
Potassium 75mg 1.5 out of 3
Chromium 30mcg 1.4 out of 3
Calcium 170mg 1.3 out of 3
Tyrosine Amount not listed. 1.3 out of 3
L-Arginine Alpha Ketoglutarate 1.5g 1 out of 3
Vitamin B5 (Pantothenic Acid) 5mg 1 out of 3
Vitamin B12 6mcg 1 out of 3
Niacin 20mg 1 out of 3
Vitamin B2 (Riboflavin) 1.7mg 1 out of 3
Waxy Maize* not rated
Glycocyamine* not rated
Glucuronolactone* not rated
Product Effectiveness Rating 1.63

* These ingredients are not included in the Supplement Database.

Ingredient Dosing

PreZilla earned a thumbs-down in this category because 0% of its ingredients are dosed within the effective range. Seventy-five (75)% of product's ingredients must be dosed within the effective range to receive a thumbs-up in this area.

This category compares a product's ingredient dosing to effective doses found in research articles and doses used in other products. When researchers study the efficacy of supplement ingredients, they use specific doses. Manufacturers should create products with ingredient doses that fall within established effective ranges.

PreZilla Dosing Compared to Research

This section is a comparison of ingredient doses found in PreZilla to amounts used in research articles. The first column contains the name of the ingredient as well as the amount. The second column contains the range of effective doses for that ingredient. Note: not all ingredients in the database contain dosing information; only ingredients with scientific dosing information are included in this analysis.

A green checkmark is shown if the ingredient amount falls within the effective range.

An orange up or down arrow is shown if an ingredient amount is either higher or lower than the effective range.

Ingredient & Amount Range
Potassium 0.075g 3g
Vitamin B6 2mg 20mg
Phosphorus 0.12g 1g
Chromium 0.03mg 0.2mg - 1mg
Beta Alanine 0.75g 2.4g - 6g

PreZilla Dosing Compared to Other Products

This section is a comparison of ingredient doses found in PreZilla to amounts used in other products. The first column displays the ingredient and amount. The second column displays the average amount of the ingredient found across all products in the database. The final column displays the range found across all products in the database.

A orange up or down arrow is shown if the ingredient amount is higher or lower than the average.

An equal sign is shown if the ingredient amount is equal to the average.

Ingredient & Amount Average Range
Sodium 0.08g 0.13g 0.01g - 2g
Potassium 0.08g 0.13g 0g - 2.01g
Vitamin B1 (Thiamine) 1.5mg 12.86mg 0.17mg - 100mg
Vitamin B2 (Riboflavin) 1.7mg 5.68mg 0.12mg - 100mg
Niacin 20mg 27.51mg 0.01mg - 200mg
Vitamin B6 0g 0.02g 0g - 1.7g
Folic Acid 0.4mg 0.39mg 0.02mg - 2.25mg
Vitamin B12 0g 0.01g 0g - 2.4g
Vitamin B5 (Pantothenic Acid) 5mg 28.94mg 0mg - 500mg
Calcium 0.17g 0.11g 0g - 2.25g
Phosphorus 120mg 92.58mg 9.5mg - 500mg
Magnesium 48mg 122.85mg 0.05mg - 900mg
Chromium 0.03mg 2.9mg 0.01mg - 200mg
Creatine Malate 1.5g 1.36g 0.5g - 1.5g
L-Arginine Alpha Ketoglutarate 1.5g 1.48g 0.1g - 5.5g
Beta Alanine 0.75g 2.37g 0g - 6.4g
Caffeine 175mg 241.3mg 3mg - 700mg


PreZilla earned a thumbs-down in this category because 68% of its claims are rated as either extremely or moderately effective. Seventy-five (75)% of a product's claims must be rated as extremely or moderately effective to receive a thumbs-up in this area.

The product’s effectiveness rating is an overall picture of how well a product does or doesn't work. Individual studies research an ingredient's effects on certain claims. For example: does creatine monohydrate increase strength, or does beta alanine improve running performance?

The Supplement Database compiles the conclusions of these studies, and based on a product's ingredient makeup, calculates how well a product does on various claims. The claims below are organized by effectiveness (extremely, moderately, ineffective).

Research Rating

PreZilla earned a thumbs-down in this category because its research rating is 31.250. A product's research rating must be at least 60 to receive a thumbs-up in this area.

A research rating of 31.250 means there is an insufficient amount of research on the product's ingredients to ensure its effectiveness rating is valid.

The research rating is a measure of how much research has been conducted on a product's ingredient makeup. Manufacturers often rely on ingredients without adequate research backing. They may do this to compete with other products that are already using poorly researched ingredients. They may also only use a very small amount of cherry-picked research as a poor justification to use certain ingredients.

The amount of research contained in the database on a product's ingredients determines its research rating. Products with higher ratings are made up of thoroughly researched ingredients.

Nutrition Label and Ingredient Transparency

PreZilla earned a thumbs-down in this category because it discloses 71% of its ingredient amounts. A product must disclose all ingredient amounts to receive a thumbs-up in this area.

Nutrition label transparency refers to how many ingredients are listed with amounts on the product label. Many supplement manufacturers hide ingredient amounts under the guise of great-sounding proprietary blends such as "Maximum Muscular Size Enhancer" or "Anabolic Cell Strength Matrix."

When manufacturers use proprietary blends, they can hide ingredient amounts making it difficult for consumers to know whether a product is effective.

PreZilla contains:

  • total ingredients: 24
  • ingredients with amounts listed: 17
  • ingredients without amounts listed: 7
  • percent of ingredient amounts disclosed: 71%

Product Label

The label below was generated from the information contained in the database about the product's ingredients and amounts. Actual product labels may differ in appearance.

PreZilla by Quadzilla Fitness Product Label

Ranking Within Category

PreZilla earned a thumbs-down in this category because it ranks 549 out of 570 in the category (bottom third). A product must be ranked in the top two-thirds of its category to receive a thumbs-up in this area.

PreZilla ranks 549 out of 570 in the Pre-Workout Supplements category and 1293 out of 1357 in the entire database. The table below lists comparisons with similarly ranked . Click on a link for an in-depth comparison between the two.

Product Comparison
PreZilla vs Solimo Pre Workout
PreZilla vs 1.M.R
PreZilla vs C4 Original
PreZilla vs Excelsior
PreZilla vs B-Nox

See more comparisons: Is PreZilla the best pre-workout supplement?


Graded Area Reason
Effectiveness Rating rating is greater or equal to the required 1.5
Ingredients less than 75% of ingredients are rated as effective
Ingredient Dosing less than 75% of ingredients are dosed properly
Claims less than 75% of claims are rated as effective
Research Rating research rating is lower than the required 60
Nutrition Label Transparency does not disclose all ingredient amounts on label
Ranking Within Category ranks in the bottom third of category
Overall Recommendation received a thumbs down the majority of areas