Find the best quality low-dose lithium supplement and get quality and cost comparisons for popular brands, including lithium orotate and lithium aspartate. Learn whether low-dose lithium can help for mood and memory, plus information about dosage, safety, side effects, potential drug interactions and more.

See our tests and comparisons of vitamin D supplements and find out which we consider the best to use -- including those with calcium. Also learn how to choose the right dose and form of vitamin D, how to take vitamin D to get the most from it, what vitamin D does and doesn't do, and how much is "too much" vitamin D.

Find the best protein powders containing whey, casein, pea, egg, and hemp, and see how much sodium, carbs, fats, and calories are really in popular brands. Learn to choose one that is high quality without contamination, and low cost, with the right dose for maintaining muscle, and best for meal replacement.

On September 24, 2026, Galil Importing Corp recalled <em>Lior Cinnamon Ground Seasoning</em> because testing found elevated levels of lead.

ConsumerLab explains how to avoid counterfeit vitamins and supplements when shopping online on Amazon, Walmart.com, and other sites. Learn to identify authorized sites and sellers and avoid fake supplements. Use the brand-by-brand guide to protect yourself from risk.

Trying to find the best iron supplement? See which iron supplements passed ConsumerLab.com's independent tests and are best for specific needs, including moderate-dose, high-dose, pills, liquids, and chews. Plus, learn about taking iron to treat iron deficiency anemia and unexplained fatigue, the different forms of iron, and how to avoid stomach upset and constipation when taking iron.

Find the best calcium supplements for bone health based on our tests and comparisons. See which products failed tests and which are our Top Picks based on quality, dosage, and cost. Also learn the best sources of calcium, safe dosage, and side effects of calcium.

See CL's top picks for best dark chocolate bars and cocoa and cacao powders based on independent tests for cocoa flavanols and contaminants like cadmium. Find out which ones passed or failed our review and learn about cardiovascular, memory, blood sugar, and other effects and side effects of cocoa.

Read our reviews of B vitamin supplements to find the best B complex, niacin, B-6, B-12, biotin, thiamin and folate, including "methyl" forms such as methylfolate. Get information about dosage, safety, and B vitamins for energy, memory, depression and more.

Be careful when trying to find best red yeast rice: Our tests of 7 products showed that most contained little of the cholesterol-lowering compound lovastatin. We also tested products for citrinin, a possible kidney toxin. See which products passed or failed our review and find out which is our Top Pick for red yeast rice.

Vitamins and supplements that may help with hair loss and thinning, including saw palmetto, beta-sitosterol, protein, iron, and vitamin D.

Find the best creatine supplement based on ConsumerLab's independent laboratory tests, including tests for contamination. Also see the latest research for or against creatine for increasing muscle size, strength, and endurance, as well as for memory and other uses , and learn about creatine dosage, safety, side effects and more.

Learn about ingredients you want in your toothpaste, mouthwash and other dental products and which ingredients you may want to avoid.

ConsumerLab tested low-carb and keto breads and bagels from Base Culture, Carbonaut, Dave's Killer Bread, Food for Life Ezekial 4:9,Hero, Nature's Own, Royo, and Schmidt to see if the labels were accurate, including carbs, net carbs, fiber, protein and sugar. See the results and our Top Picks.

Find the best creatine supplement based on ConsumerLab's independent laboratory tests, including tests for contamination. Also see the latest research for or against creatine for increasing muscle size, strength, and endurance, as well as for memory and other uses , and learn about creatine dosage, safety, side effects and more.

Learn about ingredients you want in your toothpaste, mouthwash and other dental products and which ingredients you may want to avoid.

Find out if portable air cleaners can remove the virus that causes COVID-19 infection from the air and learn which type air cleaners work best.

Certain supplements may be helpful when taking a GLP-1 agonist, but others should be used with caution or avoided. It may also be important to monitor levels of certain vitamins and minerals. Get the details.

FDA Supplement Manufacturing Inspections: ConsumerLab found that 49.1% of 800 dietary supplement manufacturing facilities inspected by the FDA in FY 2025 received letters indicating noncompliance with cGMPs. Learn which countries had the highest citation rates and how the results compare to prior years.

Trying to find the best extra virgin olive oil (EVOO)? We tested 11 popular olive oils chemically as well as for aroma and flavor. See the results and our Top Picks, plus learn about the health benefits of extra virgin olive oil. Products tested include extra virgin olive oils by Atlas Olive Oils, Bertolli, Bragg, California Olive Ranch (Everyday and Global Blend), Graza (Drizzle and Sizzle), Kirkland/Costco (Italian and Organic), and Terra Delyssa (Premium).

Trying to find the best berberine or goldenseal supplements? ConsumerLab tested 10 different products. Many failed our tests of quality. Find out why, see our top picks for berberine and goldenseal, and learn if these are effective for weight management, type 2 diabetes, fatty liver, high cholesterol, H. pylori infection, and other conditions.

See the top-rated multivitamins from ConsumerLab's independent testing. Comparison of popular multivitamin/multimineral supplements for women, men, children, and seniors, plus supplements for people with diabetes, people who need to avoid iodine, pets, and more. Also find out which multivitamins failed testing due to problems.

Read our review to find the best prostate supplements with saw palmetto and beta-sitosterol, evidence for using for benign prostatic hyperplasia, or BPH, safety, side effects, drug interactions and more. Find out which ones passed our test and why.

Learn about the health benefits of grape seed extract, and find out it improves venous insufficiency, leg swelling, swelling after surgery, or can help to lower blood pressure.

If you want to find the best green tea high in antioxidants such as EGCG, you'll want to see our laboratory findings. We discovered a shocking range of EGCG, from 8 mg to more than 450 mg per serving! See results for popular brands of green tea as tea bags, loose leaf tea, bottled tea, ceremonial matcha powder, and green tea extract supplements. Also see how much caffeine we found, compare prices, and learn what conditions green tea is good for and about potential side effects.

Seaweed snacks and dried seaweeds can be dangerous due to excessive iodine and heavy metal contamination, particularly with lead and cadmium, as our recent tests revealed. See which seaweed snacks rated best and which could not be approved.

Find the best creatine supplement based on ConsumerLab's independent laboratory tests, including tests for contamination. Also see the latest research for or against creatine for increasing muscle size, strength, and endurance, as well as for memory and other uses , and learn about creatine dosage, safety, side effects and more.

Trying to find the best probiotic supplements? Our tests found that not all products enough cells (CFUs) to match what's been shown to work. See our results, comparisons, and Top Picks for popular brands and get the evidence for specific probiotic strains for uses such as IBS, diarrhea, gas, allergies and colds, infections, weight loss and more. Plus, get information about proper storage, safety, side effects, and drug interactions with probiotics.

See which vitamin K supplements are ConsumerLab's Top Picks. Also learn what vitamin K does and does not do, the difference between vitamin K1 and the MK-4 and MK-7 forms of vitamin K2, and information on the correct dosage, safety and side effects of vitamin K.

Learn about the pros and cons of using sugar substitutes and artificial sweeteners in place of table sugar. Sweeteners discussed include stevia, monk fruit, and other high-intensity sweeteners; xylitol, erythritol, allulose and other low-calorie sweeteners; and agave syrup, black sugar, coconut sugar, honey, molasses and other sugar alternatives.

Find the best collagen supplement for wrinkles and joint pain based on independent testing and review by ConsumerLab.com. We analyzed and compared popular collagen hydrolysates providing collagen peptides from ingredients such as Verisol, and we reviewed the clinical research behind them. Also learn about collagen dosage and safety, and about UC-II cartilage.

Trying to find the best extra virgin olive oil (EVOO)? We tested 11 popular olive oils chemically as well as for aroma and flavor. See the results and our Top Picks, plus learn about the health benefi...

We tested the leading joint health supplements to find the best products containing glucosamine, chondroitin, MSM, boswellia, turmeric, and collagen. Four failed to pass our tests. Find out which were best and if these products can really help with joint pain, knee pain, or osteoarthritis and get information about dosage, safety, side effects, and drug interactions.

Red light and near infrared light therapy devices are promoted for numerous conditions, including acne, fibromyalgia, pain, cognitive function and other uses. Find out if these devices work and if they are safe.

On August 21, 2026, Vitruvias Therapeutics, Inc. recalled one lot of <em>Thyroid Tablets, USP 30 mg</em> because testing confirmed the product may be superpotent (i.e., may contain a higher dose than indicated on the label).

On August 10, 2026, Church &amp; Dwight Co., Inc. recalled certain lots of <em>Zicam Cold Remedy Medicated Nasal Swabs With Cooling Menthol &amp; Eucalyptus</em> because an FDA inspection of the contract manufacturer found deviations from current Good Manufacturing Practice (cGMPs).

Trying to find the best extra virgin olive oil (EVOO)? We tested 11 popular olive oils chemically as well as for aroma and flavor. See the results and our Top Picks, plus learn about the health benefits of extra virgin olive oil. Products tested include extra virgin olive oils by Atlas Olive Oils, Bertolli, Bragg, California Olive Ranch (Everyday and Global Blend), Graza (Drizzle and Sizzle), Kirkland/Costco (Italian and Organic), and Terra Delyssa (Premium).

Find the best melatonin supplements based on independent tests and reviews by ConsumerLab.com evaluating quality, dose and price. Includes fact-based information about what melatonin can and cannot do, appropriate dosage, and melatonin side effects. Melatonin products tested include low and high dose, immediate and time release, pills, liquids, lozenges, melts, and gummies.

Be cautious with rice! Our research uncovered concerning levels of arsenic in several products -- prompting recommendations to limit use and avoid consumption by children. Explore our findings and discover our Top Picks among medium-grain and long-grain white rice, basmati rice, jasmine rice, brown rice, black rice, and wild rice. Brands reviewed include Ben's, Lotus Foods, Kirkland (Costco), Kokuho, Mahatma, Royal, Trader Joe's, Lundberg, Nishiki, and 365 (Whole Foods).

Find the best vitamin C supplements based on ConsumerLab's independent tests. Read our reviews and comparisons of popular vitamin C pills, gummies, powders, and liquids and learn when to use different forms of vitamin C (ascorbic acid, sodium ascorbate, calcium ascorbate, liposomal vitamin C), if vitamin C supplements help prevent colds, provide energy, or have other health benefits, plus information about dosage, safety, and potential side effects of vitamin C.

Find the best creatine supplement based on ConsumerLab's independent laboratory tests, including tests for contamination. Also see the latest research for or against creatine for increasing muscle size, strength, and endurance, as well as for memory and other uses , and learn about creatine dosage, safety, side effects and more.

Relaxium Sleep claims to be "America’s #1 Trusted Sleep Aid." Find out if research supports this claim and if it's worth its price.

Plasmalogen supplements claim to improve cognitive function, support memory, and reduce brain fog. Find out if they work.

Basil seeds are often marketed for benefits such as improved digestion, weight management, and better blood sugar control due to their fiber (which swells when wet) — but do they actually deliver? Find out.

Be careful when trying to find best red yeast rice: Our tests of 7 products showed that most contained little of the cholesterol-lowering compound lovastatin. We also tested products for citrinin, a possible kidney toxin. See which products passed or failed our review and find out which is our Top Pick for red yeast rice.

Find the best protein powders containing whey, casein, pea, egg, and hemp, and see how much sodium, carbs, fats, and calories are really in popular brands. Learn to choose one that is high quality without contamination, and low cost, with the right dose for maintaining muscle, and best for meal replacement.

Are "fruit" and "veggie" powders and pills worthwhile? See ConsumerLab's tests and reviews of supplements, including those that contain grasses, chlorella, and spirulina. Also learn what nutrients these ingredients provide and potential side effects.

See CL's top picks for best dark chocolate bars and cocoa and cacao powders based on independent tests for cocoa flavanols and contaminants like cadmium. Find out which ones passed or failed our review and learn about cardiovascular, memory, blood sugar, and other effects and side effects of cocoa.