Reviews and Information for Kirkland
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Product Review
Canned Tuna, Salmon, Sardines & Mackerel Review
Find Fish With the Least Mercury & Arsenic and Most Omega-3s
Product Review
Nutrition Bars Review (Protein, Energy, and Nut & Fruit Bars)
Our Tests Showed What's Hiding in Protein Bars
Product Review
Joint Health Supplements Review (Glucosamine, Chondroitin, MSM, Boswellia, Collagen and Turmeric)
18% of Joint Health Supplements Failed to Pass Our Tests. See Which Passed or Failed, and Our Top Picks.
Product Review
Turmeric and Curcumin Supplements and Spices Review
See Our Top Picks Among Turmeric Products
Product Review
Water Filter Pitchers Review
See the Best Pitchers For Different Filtering Needs
Product Review
Rice Review (White, Brown, Black, Wild, and Combination)
Discover Arsenic Levels in Rice and Our Top Picks.
Product Review
Cinnamon Supplements and Spices Review
CAUTION: Limit Use of Some Cinnamon Due to Liver Toxin. See Our Findings and Top Picks.
Product Review
Multivitamin and Multimineral Supplements Review
Best Multivitamins -- Caution with Gummies
Product Review
Bone Broth Review
Find the Best Bone Broth for Quality, Taste, and Value. Four of 10 Products Fail to Get CL Approval.
Product Review
Vitamin D Supplements Review (Including Calcium, Magnesium, Vitamin K, and Boron)
Find the Best Vitamin D Supplement and Avoid Problems
Product Review
Prebiotic Supplements Review
You Can't Tell How Much Fiber Is Really In Most Prebiotics Without Testing
Product Review
Collagen Supplements Review
See our Top Picks for Wrinkles and Joints
Product Review
Lactose Intolerance Products Review (Lactase Enzyme Supplements and Lactose-Free Milks)
Choose the Best Lactase Enzyme Supplement and Lactose-Free Milk. Find a CL Approved Lactose Intolerance Product.
Product Review
Green Tea Review: Tea Bags, Loose Leaf Tea, Matcha Powders, and Supplements
Some green teas provide barely any green tea polyphenols, while some others are high strength. See the Test Results and Our Top Picks for Green Tea.
Product Review
Shelled Walnuts (Halves & Pieces)
See Our Top Picks for Walnuts
Product Review
Calcium and Bone Health Supplements Review (Including Vitamins D & K, Magnesium and Boron)
See Which Bone Health Supplements Are Top Picks and Which Fail
Product Review
Gluten-Free Grains Review (Buckwheat, Quinoa, Sorghum, Millet, and Teff)
31% of Gluten-Free Grains Fail Our Tests Due to Contaminants. Quinoa, Buckwheat, Sorghum, Millet and Teff Tested.
Product Review
Astaxanthin Supplements Review
See Which Astaxanthin Products Passed or Failed CL's Tests
Product Review
Coconut Oil and Medium Chain Triglycerides (MCT) Oil Review — Semi-Solid and Liquid Oils & Supplements
Find the Best Coconut Oil and MCT Oil. See How These Oils Compare on Medium Chain Triglycerides (MCTs), Quality, and Value.
Product Review
Extra Virgin Olive Oil Review
Many Extra Virgin Olive Oils Don't Seem to Make the Grade
Product Review
Toprol XL vs. Generic Metoprolol Succinate Extended-release (ER) Tablets Review Article
Choose the Best Blood Pressure Medication. Find Out Why Some Generic Blood Pressure Medications Are Not the Same as the Original & May Increase Blood Pressure or Have Other Disturbing Side Effects.
Product Review
Vitamin E Supplements Review
Find the Best Vitamin E Supplement. Tests and Reviews of Popular Vitamin E Supplements & CL's Top Picks.
Product Review
B Vitamin Supplements Review (B Complexes, B6, B12, Biotin, Folate, Niacin, Riboflavin & More)
See Our Top Picks and Which 5 Failed Testing
Product Review
Seaweed Snacks and Foods Review
Tests Reveal Seaweed Snack Risks
Product Review
Fish Oil, Krill Oil, and Algal Oil Omega-3 (DHA & EPA) Supplements Review
See Our Omega-3 Top Picks and Avoid Rancid Fish Oils.
Product Review
CoQ10 and Ubiquinol Supplements Review
Find the Best CoQ10 and Ubiquinol Supplements and Learn How They Differ
Product Review
Vitamin C Supplements Review
Find the Best Vitamin C Supplements
Product Review
Probiotic Supplements Review (Including Pet Probiotics)
See What's Really in Probiotics and Our Top Picks
Product Review
Cranberry Juices and Supplements Review
CL's Tests Show Which Cranberry Juices and Supplements Are Best and Cost the Least
