Product Reviews and Information for Resistant Starch
Filters
View All
Search term may appear only in full report available to members. Join now for full access.
Clinical Update
3/30/2026
Resistant Starch & Cooking -- What Changes?
We’ve expanded our article about resistant starch with answers to key reader questions, including:
- Does cooking reduce resistant starch?
- How much resistant starch is found in:
- Cooked oatmeal vs. overnight oats
- Potato starch and oat flour
- Breads (white, multigrain, whole wheat, oatmeal, rye, pumpernickel, and mixed grain)
- Can resistant starch help with fatty liver disease or weight?
Read the updated answers in our Resistant Starch article.
Product Update
3/26/2026
Cold Pasta and Rice -- How Much Resistant Starch Do They Really Have?
Think you’re getting plenty of resistant starch from cold pasta or rice? You’re probably not. Get the details in our updated article about resistant starch, which also covers foods like green bananas.
Product Review
Prebiotic Supplements Review
You Can't Tell How Much Fiber Is Really In Most Prebiotics Without Testing
Clinical Update
4/23/2026
Cooled Pasta Benefit?
Does eating pasta that has been cooled after cooking increase its resistant starch content and reduce blood sugar spikes after eating in people with type 1 diabetes? Find out what a study showed in our article about resistant starch.
CL Answer
Butyrate Supplements for Gut Health: Does butyric acid really work and is it safe?
Can butyrate supplements improve gut health or help reduce symptoms of irritable bowel syndrome (IBS) or Crohn's disease? Find out what the clinical evidence shows, learn about the different forms of butyrate, including sodium butyrate, calcium-magnesium butyrate, and tributyrate, and get details about products such as BodyBio Sodium Butyrate and Healus Complete Biotic Tributyrin, dosage, safety and cost.
Product Review
Probiotic Supplements Review (Including Pet Probiotics)
See What's Really in Probiotics and Our Top Picks
CL Answer
Resistant Starch: Health Benefits & Safety
Resistant starches have been promoted for improving bowel function, blood sugar control, reducing risk factors of metabolic syndrome, and for weight loss. Find out if they work.
CL Answer
Which supplements and foods help with gout and which may worsen it?
Find out about the effects on uric acid levels and gout of fish and fish oil, coffee, beer, animal meat, milk proteins, vegetable proteins, fructose, lemon juice, tart cherry juice, vitamin A, vitamin C, and niacin
Product Review
Protein Powders and Shakes Review
Find Out Which Protein Products Passed or Failed Our Tests
Product Review
Rolled Oats and Steel-Cut Oats Review
Find the Best Rolled and Steel-Cut Oats -- Beware of Unexpected Gluten.
Product Review
SAMe (S-adenosyl-methionine) Supplements Review
Choose the Best SAMe Supplement and Save Money
CL Answer
I have type 2 diabetes. Should I be concerned about ingredients like maltodextrin and maltitol that are found in some protein bars and drinks?
Learn more about maltitol and maltodextrin and their effects on blood glucose levels for people with type 2 diabetes.
CL Answer
Which supplements and foods help relieve constipation and which can cause constipation?
Find out which supplements can cause constipation, including iron, calcium, protein powders and drinks and others. ConsumerLab.com's answer explains.
CL Answer
Can white kidney bean extract lower blood sugar or help me lose weight?
Does white kidney bean extract help promote weight loss? Find out more including evidence from clinical studies and dosage.
CL Answer
What is the best sunscreen based on safety and efficacy?
We’ve boiled down the latest research about mineral and chemical sunscreens, including product tests, to help you choose the best sunscreen (which will depend on whether you expect to be in or out of the water). We also list popular sunscreens that have, or have not, been found to contain cancer-causing compounds (benzene and benzophenone).
Clinical Update
9/24/2014
Lower-dose Fish Oil Helps with Epilepsy
A small, but well-controlled study of people with drug-resistant epilepsy found that a modest dose of fish oil significantly reduced the frequency of seizures while a higher dose did not. The researchers note a possible explanation why the lower dose was more effective than the higher dose. Find out the details, including the dose and exact type of fish oil used, in the update to the Fish Oil Supplements Review >>
Clinical Update
5/02/2023
Sunscreens: Chemical vs. Mineral
Tests of water-resistant sunscreens by Consumer Reports found that, despite health concerns with chemical sunscreens, they performed better than mineral sunscreens. Find out why this might be in our article about sunscreens.
CL Answer
Is canola oil good or bad for you? I heard it can be toxic.
Find out if canola oil is bad for you or good for you, and whether it helps heart health. Clinical evidence and how it compares to other oils.
CL Answer
I read an article stating that some of the ingredients in Centrum multivitamins may be dangerous or toxic. Is that true?
Learn more about the safety of ingredients in Centrum, including binders, fillers, and coloring agents.
CL Answer
Dandelion Tea & Supplements: Health Benefits and Safety
Find out about the potential health benefits of dandelion tea and supplements, as well as safety, side effects, and potential drug interactions.
Recalls & Warnings
April 14, 2026
Bari Life, Bird&Be, Dr. Fuhrman & Other Multis Recalled
On April 10, 2026, the U.S.
Clinical Update
8/09/2015
Green Tea May Inhibit Starch Absorption
A study recently found that taking a green tea extract along with a starchy meal (corn flakes) significantly reduced carbohydrate absorption. This may help explain why green tea may help modestly with weight management. Details about this study, including dosage, along with our tests of green tea supplements and teas, are found in the Green Tea Review »
Recalls & Warnings
February 17, 2026
Rosabella Moringa Capsules Recalled, Linked to Drug-Resistant Salmonella Outbreak
On February 13, 2026, Ambrosia Brands, LLC, recalled certain lots of Rosabella Moringa Powder capsules linked with a multi-state outbreak of drug-resistant Salmonella.
Recalls & Warnings
September 17, 2025
Bariatric Fusion Multivitamins Recalled
On September 11, 2025, the Consumer Product Safety Commission and Blueroot Health issued a recall of several lots of Bariatric Fusion High ADEK multivitamin capsules because they contain a significant amount of iron (45 mg) but are not packaged with child-resistant bottle caps.
Recalls & Warnings
March 28, 2025
NFH Iron and Prenatal Supplements Recalled
On March 27, 2025, NFH Iron SAP, NFH Heme Iron SAP, and NFH Prenatal SAP dietary supplements were recalled because the packaging is not child-resistant and may pose a risk of poisoning for young children.
Recalls & Warnings
March 20, 2026
Salmonella Outbreak Update: 97 Cases Linked With Moringa Leaf Supplements
On March 17, 2026, the FDA and CDC announced that a joint investigation of a multi-state Salmonella outbreak has concluded.
Recalls & Warnings
June 26, 2025
California Gold Iron and Multis Recalled
On June 26, 2025, iHerb recalled California Gold Nutrition Daily Prenatal Multi, Ultamins Women’s Multivitamin, and Ultamins Women’s 50+ Multivitamins because the bottles and blister packs are not child-resistant, which may pose a risk of iron poisoning for young ...
Recalls & Warnings
January 03, 2025
Essential Oil Sold on Amazon Recalled
On January 2, 2025, Euqee Wintergreen Essential Oils, sold on Amazon were recalled because the packaging is not child-resistant and may pose a risk of poisoning for young children.
Recalls & Warnings
June 22, 2023
Nationwide Pharmaceutical’s Ferrous Sulfate Supplements Recalled
On June 22, 2023, the U.S.
Recalls & Warnings
February 02, 2026
Mindbodygreen Ultimate Multivitamin+ Recalled
On January 29, 2026, the Consumer Product Safety Commission (CPSC) announced a recall of certain lots of Mindbodygreen Ultimate Multivitamin+ because they contain iron but are not packaged with child-resistant bottle caps, as required by the Poison Prevention Packaging Act.
Recalls & Warnings
February 06, 2023
Recalled Eye Drops Linked to Vision Loss and One Death
On February 2, 2023, Global Pharma Healthcare issued a nationwide recall of its Artificial Tears Lubricant Eye Drops due to potential contamination with bacteria that can cause serious infection, blindness, and death.
Recalls & Warnings
May 14, 2021
Maker of Care by Design CBD Settles Charges of Unsupported Claims
On May 5, 2021, Cannacraft, Inc.
Recalls & Warnings
July 13, 2005
Recall of Multivitamins with Iron Lacking Child-Resistant Caps
On July 12, 2005, The U.S. Consumer Product Safety Commission in cooperation with NBTY, Inc. announced a voluntary recall of the following consumer product. Consumers should stop using recalled products immediately unless otherwise instructed.
Recalls & Warnings
March 12, 2002
Recall of Multivitamin Due to Unsafe Bottling For Children
On March 12, 2002, the U.S. Consumer Product Safety Commission (CPSC) announced that Leiner Health Products, of Carson, Calif., in cooperation with CPSC, is voluntarily recalling about 14,000 bottles of dietary supplements containing iron.
Recalls & Warnings
July 12, 2013
Herbal Supplement Company Warned For Drug Claims, Manufacturing Violations
On June 18, 2013, the FDA issued a warning letter to Herbs of Light, Inc.
Recalls & Warnings
April 17, 2020
Earth Angel Oils Warned for Coronavirus Claims
On April 14, 2020, the FDA issued a warning letter to Earth Angel Oils for selling products with unsupported claims that they can treat coronavirus (COVID-19).
Recalls & Warnings
April 02, 2004
Makers of Fat and Starch "Blockers" Receive FDA Warning Letters
On April 1, 2004, the Food and Drug Administration (FDA)announced that it had sent warning letters to 16 dietary supplement distributors making false and misleading claims for weight loss products promoted over the internet.
Recalls & Warnings
December 19, 2012
Zicam Nasal Gel Recalled Due to Potential Bacterial Contamination
On December 18, 2012, Matrixx Initiatives issued a voluntary recall of a single lot of Zicam Extreme Congestion Relief nasal gel after routine testing confirmed a sample from this lot was contaminated with Burkholderia cepacia.
Recalls & Warnings
November 19, 2016
GNC Women's Multi Recalled Due to Undeclared Allergen
On November 16, 2016, Nutra Manufacturing, Inc. issued a recall of one lot of GNC Women's Ultra Mega Time Release multivitamin because it contains undeclared milk.
Recalls & Warnings
August 09, 2016
Liquid Multis, Vitamin D & More Recalled Due to Potential Bacterial Contamination
On August 8, 2016, PharmaTech, LLC issued a recall of twenty liquid vitamin supplements, sold under various brand names, because they have the potential to be contaminated with Burkholderia cepacia.
Recalls & Warnings
August 18, 2017
FDA Warns Consumers Not to Use Certain Liquid Multis, Vitamin D, and Other Supplements Due to Potential Bacterial Contamination
On August 11, 2017, the FDA advised the public not to use any liquid drug or dietary supplement products manufactured by PharmaTech LLC of Davie, Florida, and labeled by Rugby Laboratories, Major Pharmaceuticals, and Leader Brands, because they have the potential to be contaminated with ...
Recalls & Warnings
May 23, 2013
Seller of Sexual Enhancement, Cholesterol, Resveratrol Supplements and More Warned For Drug Claims
On May 2, 2013, the FDA issued a warning letter to Alternative Health Supplements, following a review of the company's website, which found statements made about several dietary supplements, including Regenerect, Alligin, Astaxanthin Advantage, HDL Cholesterol Management, Resveratrol, Coral Calcium ...
