Investigating the Bioavailability of Broccoli Extract Supplements
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: Avmacol Extra Strength with coating - 1 tablet, Avmacol chewable wafer - 2 tablets, Avmacol Extra Strength with coating - 2 tablets.
- Who it may be relevant to
- Registry conditions: Diet, Healthy. Basic parameters: 18 years — 60 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- United States
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Overview
The goal of this clinical trial is to compare how much glucoraphanin and sulforaphane from 3 different versions of broccoli extract supplements is absorbed into the body and excreted in urine. This study involves generally healthy adults age 18-60 years. The supplements contain glucoraphanin and myrosinase enzyme, both naturally occurring in cruciferous vegetables. Once ingested, glucoraphanin is converted to the bioactive compound sulforaphane, which is thought to have numerous health benefits, including cancer prevention. Participants will: * consume 3 different versions of broccoli extract supplements (glucoraphanin will range from 35-70 mg) * complete 3 separate 24 hour study cycles * submit blood and urine samples for 24 hours * follow diet restrictions (no cruciferous vegetables or condiments or phytochemical/herbal supplements for 1 week prior to and during each study cycle)
Detailed description
This study aims to compare the bioavailability of 3 different versions of a broccoli extract supplement in generally healthy adults age 18-60 years who do not smoke or are not pregnant/lactating. The supplements contain glucoraphanin and myrosinase enzyme, both naturally occurring in cruciferous vegetables. Once ingested, glucoraphanin is converted to the bioactive compound sulforaphane, which is thought to have numerous health benefits, including cancer prevention. The amount of glucoraphanin that subjects will take will range from 35-70 mg. Glucoraphanin, sulforaphane, and sulforaphane metabolites will be measured in plasma and urine for 24 hours (plasma: 0, 0.5, 1, 2, 4, 8, and 24 hours after supplement consumption; urine: 0-2, 2-4, 4-8, and 8-24 hour after supplement consumption).
Interventions
- Dietary supplement Avmacol Extra Strength with coating - 1 tablet
Participants will swallow by mouth 1 tablet Avamacol Extra Strength with coating (35 mg glucoraphanin per tablet) - Dietary supplement Avmacol chewable wafer - 2 tablets
Participants will chew and swallow by mouth 2 wafers Avmacol chewable wafers (30 mg glucoraphanin per wafer) - Dietary supplement Avmacol Extra Strength with coating - 2 tablets
Participants will swallow by mouth 2 tablets Avamacol Extra Strength with coating (35 mg glucoraphanin per tablet)
Primary outcome measures
- Urine sulforaphane [Time frame: 0, 2, 4, 8, and 24 hours]
- Urine sulforaphane metabolites [Time frame: 0, 2, 4, 8, and 24 hours]
- Plasma glucoraphanin [Time frame: 0, 1, 2, 4, 8, and 24 hours]
- Plasma sulforaphane [Time frame: 0, 1, 2, 4, 8, and 24 hours]
- Plasma sulforaphane metabolites [Time frame: 0, 1, 2, 4, 8, and 24 hours]
Eligibility criteria
Inclusion criteria
- Healthy adults, 18-60 years of age
- Willing to stop taking herbal and phytochemical (plant-based extract or phytochemical) supplements for 1 week prior to and during each study cycle
- Willing to stop cruciferous vegetable intake 1 week prior to and during each study cycle
- Must be able to give written informed consent
Exclusion criteria
- Body Mass Index (BMI) <18.5 or >30.0 kg/m2
- Tobacco use, including e-cigarettes, or smoking of any substance (e.g. cannabis) in the past three months
- Pregnancy, breastfeeding, or planning to become pregnant before completing the study
- Engaging in vigorous exercise more than 7 hours per week
- Have a significant acute or chronic illness such as cardiovascular disease, kidney or liver disease, diabetes, thyroid disorder, or radiation or chemotherapy treatment for cancer within the past five years
- Use of medications to control cholesterol (e.g. statins, cholestyramine) or fat absorption (e.g. orlistat)
- Have had bariatric surgery (e.g. gastric bypass, gastric banding, sleeve gastrectomy, etc.), other gastrointestinal procedure (e.g. cholecystectomy) or disorders (e.g. Crohn's disease, celiac disease, ulcerative colitis)
- Allergic to broccoli, moringa, mustard, or maitake mushrooms
- Weighs less than 110 pounds
- Diagnosis of sickle cell disease
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: Yes
Study design
- Allocation
- Randomized
- Model
- Crossover
- Masking
- Double blind
- Primary purpose
- Basic science
Study locations
United States · 1 center
- Oregon State University — Corvallis
Identifiers
NCT: NCT07564674 · LPI-2026-2211