Ultimate ThermoFit by It Works! — Ingredients, Evidence & Safety

Product Label

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Safety Alerts

ℹ️ Contains proprietary blend — exact ingredient amounts not disclosed

Label Data

1 Tablet(s) Serving Size

60 Servings

Botanical with Nutrients Product Type

50% Evidence Coverage

Supplement Facts — Evidence Check

Vitamin B12

100 mcg (1667% DV)

📊 41.7× RDA — above typical dose 📚 138 studies (Tier A: 1, B: 44)

RDA 0.0024mg This product: 0.1mg

Chromium

200 mcg (167% DV)

📊 5.7× RDA — above typical dose 📚 197 studies (Tier A: 1, B: 55)

RDA 0.035mg This product: 0.2mg

Capsicum fruit extract

33 mg

Raspberry Ketones

33 mg

📊 Market median: 300.0mg (68 products)

Median 300.0mg This product: 33mg

Acai fruit 5:1 extract

100 mg

📊 Market median: 600.0mg (200 products) 📚 7 studies (Tier A: 0, B: 1)

This product: 100mg

Proprietary Blend

605 mg

Other Ingredients

Dicalcium Phosphate Microcrystalline Cellulose Croscarmellose Sodium Stearic Acid Film Coat Magnesium Stearate Silica

Label Claims — Verification

❓ All Other

❓ Structure/Function

All Other (99% of products) Structure/Function (89% of products) Nutrient (56% of products)

Target Groups

Adult (18 - 50 Years)

Product Information

📋 Directions for Use

What is the recommended dosage? Adults take one (1) tablet two to three times daily with meals.

Suggested use Adults take 1 tablet 2-3 times daily with meals. Drink at least 8 glasses of water daily.

⚠️ Warnings & Precautions

Is Ultimate ThermoFit safe for me to use if I am pregnant, nursing or have an ongoing medical condition? Before using any new product, whether a nutritional supplement, topical cream or treatment, or any other item, you should always consult your physician to find out if it is safe for you.

Can my children use this product? All It Works! products are recommended only for adults 18 years old or older.

Caution: Consult your physician if you are pregnant, nursing, taking medications, or have a medical condition.

🧪 Formulation Notes

Thermogenic weight loss formula with Acai fruit & Capsimax

Additional Information

Thermogenic weight loss formula

Product Details

DSLD Entry Date 2019-11-21

Product Type Botanical with Nutrients

Form Tablet or Pill

Brand It Works!

DSLD ID 208373

Data Updated 2026-04-11

Research Evidence

237 Research Sources

53 Avg Quality Score

83 Meta Analysis

74 Systematic Review

45 Rct

29 Clinical Trial

2 Guideline

2 Regulatory Source

1 Openfda Safety

A Associations between serum Homocysteine, vitamin B9, and vitamin B12 levels and the formation of intracranial Aneurysms: A systematic review and meta-analysis

Meta Analysis Journal of clinical neuroscience : official journal of the Neurosurgical Society of Australasia 2025

PubMed DOI

A Intake of vitamin B6, folate, and vitamin B12 and risk of coronary heart disease: a systematic review and dose-response meta-analysis of prospective cohort studies

Meta Analysis Critical reviews in food science and nutrition 2019

PubMed DOI

A Oral vitamin B12 versus intramuscular vitamin B12 for vitamin B12 deficiency

Systematic Review The Cochrane database of systematic reviews 2018

PubMed DOI Cochrane

A Effects of Vitamin B12 Supplementation on Cognitive Function, Depressive Symptoms, and Fatigue: A Systematic Review, Meta-Analysis, and Meta-Regression

Meta Analysis Nutrients 2021

PubMed DOI

A Efficacy of different routes of vitamin B12 supplementation for the treatment of patients with vitamin B12 deficiency: A systematic review and network meta-analysis

Systematic Review Irish journal of medical science 2024

PubMed DOI

B Helicobacter pylori infection and micronutrient deficiency in pregnant women: a systematic review and meta-analysis

Meta Analysis BMJ open gastroenterology 2020

PubMed DOI

B Vitamin B12 supplementation during pregnancy for maternal and child health outcomes

Systematic Review The Cochrane database of systematic reviews 2024

PubMed DOI Cochrane

B A comprehensive review and meta-regression analysis of randomized controlled trials examining the impact of vitamin B12 supplementation on homocysteine levels

Meta Analysis Nutrition reviews 2024

PubMed DOI

B Relationship between vitamin B12 levels and motor development: A systematic review

Systematic Review Clinical nutrition ESPEN 2024

PubMed DOI

B Vitamin B12, folate, and homocysteine in metabolic syndrome: a systematic review and meta-analysis

Meta Analysis Frontiers in endocrinology 2023

PubMed DOI

View all evidence for Vitamin B12 →