Reviews and Information for Tylenol
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CL Answer
Are there any supplements I should avoid when taking acetaminophen (Tylenol)?
Find out if there are any supplements that should be avoided when taking acetaminophen (Tylenol).
CL Answer
Can taking N-acetylcysteine (NAC) supplements reduce my risk of liver damage from acetaminophen?
Information on taking NAC supplements (N-acetylcysteine) to reduce the risk of liver damage from acetaminophen.
CL Answer
How do the COVID-19 vaccines compare in terms of efficacy, safety and side effects? How, when and where do I get the COVID-19 vaccine?
Find out how the COVID-19 vaccines from Pfizer and Moderna compare and learn how when and where you can get the COVID-19 vaccine.
CL Answer
What is the best way to take melatonin to get a good night's sleep?
Learn more about the best way to take melatonin for better sleep. When to take it, how to take it, and general melatonin information.
CL Answer
Is it better to use a powdered product that you mix with liquid than to take a pill? I was told that the vitamins will be more completely absorbed. Is that true?
Learn more about taking supplements & multivitamins in powder or tablet form, including tips on how to get the most from your supplement.
CL Answer
Is it possible to take too much vitamin C?
Find out the daily value of vitamin C, along with possible side effects of excessive vitamin C intake. ConsumerLab explores the topic of proper vitamin C supplement usage, and why taking too much can be harmful.
CL Answer
What are the benefits of calcium-d-glucarate?
Learn more about calcium-d-glucarate, including evidence from clinical studies on cancer and cholesterol and safety.
Product Review
NAC (N-Acetyl Cysteine) Supplements Review
Choose the Best N-Acetyl Cysteine Supplement. See Our Tests of Popular NAC Supplements and Top Picks for Quality and Value.
Product Review
Holy Basil Supplements Review
Find the Best Holy Basil (Tulsi) Supplements. Tests and Reviews of Popular Holy Basil Supplements & CL's Top Pick.
CL Answer
Should I be worried that my supplement contains "caramel coloring IV"? I've heard that it has been linked to cancer.
Learn more about caramel coloring IV, including evidence from studies on cancer.
CL Answer
What are the health benefits of andrographis? Can it treat colds, help with joint pain, or other conditions, and is it safe?
Learn about the health benefits of andrographis, whether it can help relieve cold symptoms, reduce pain and stiffness of osteoarthritis or rheumatoid arthritis, decrease symptoms of ulcerative colitis, or slow the growth of cancer. See the clinical evidence for the branded andrographis extract ParActin. Plus, learn about dosage, side effects and drug interactions with andrographis.
CL Answer
Which supplements can help me sleep and which cause insomnia?
Find out which supplements may improve sleep, including melatonin, L-tryptophan, and magnesium, and which may make sleeping more difficult.
CL Answer
Do arnica pills, gels, creams, or sprays reduce bruising, pain, or swelling?
Find out if arnica pills, gels, creams, or sprays can reduce bruising, pain, or swelling, help with varicose veins, or muscle pain after exercise.
CL Answer
Is kratom too dangerous to use?
Find out if kratom is safe/legal to use, including potential adverse effects, such as agitation, rapid heartbeat, nausea, drowsiness, seizures, and possible drug interactions.
CL Answer
How are you staying healthy during the coronavirus pandemic?
Tips for staying healthy during the coronavirus (COVID-19) pandemic. Tips from ConsumerLab members for maintaining physical health, mental health and social well-being during COVID-19.
Recalls & Warnings
February 06, 2023
FDA Warns Companies Promoting Products to Treat Monkeypox, COVID-19, & Other Viruses
On January 30, 2023, the FDA issued a warning letter to four companies following review of the company websites, which found statements about company products to be drug claims because they were promoted to mitigate, prevent, treat, diagnose, or cure viruses such as monkeypox.