Antioxidant Bioavailability

Status unconfirmed · Not applicable · Has a placebo group

Conditions studied: Pharmacokinetics

In brief

A small cross-over trial on 3 different doses of liposomal vitamin C, comparing vitamin C uptake and downstream effects when 24 people consume 1, 2, and 5 grams on different test days, compared to placebo.

Key facts

Study ID

NCT04463030

Run by

Natural Immune Systems Inc

People needed

24

Starts

2020-07-01

Expected to finish

2023-06-25

Last updated by the study team

2022-09-27

Who can join

Age: 18 and older, up to 70. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• Adult people of either gender;
• BMI between 18.0 and 34.9 (inclusive);
• Willing to abstain from coffee, tea, and soft-drinks for at least one hour prior to a clinic visit;
• Willing to abstain from alcohol for at least 12 hours prior to a clinic visit;
• Willing to maintain a consistent habit of abstaining from exercising, tobacco use, and nutritional supplements on the morning of a study visit.

You may not qualify if…

• Cancer during past 12 months;
• Chemotherapy during past 12 months;
• Significant active uncontrolled illness (such as lymphoma, liver disease, kidney failure, heart failure).
• Previous major surgery to stomach or intestines [(absorption of test product may be altered) minor surgery is not a problem, including appendix and gallbladder removal];
• Currently taking nutritional supplements judged by the study coordinator to negate or camouflage the effects of the test product;
• Food allergies related to ingredients in test product;
• Women who are pregnant, nursing, or trying to become pregnant.

Where it is running

• Gitte Jensen — Klamath Falls, Oregon, United States (enrolling)

Full record on ClinicalTrials.gov

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