Tag: Vitamin safety

According to the National Institutes of Health, about one-third of US adults take a multivitamin supplement. For consumers concerned about quality, finding out if a company like Costco's multivitamins are third-party tested is a crucial step in ensuring product integrity and safety for their well-being.

While vitamin B12 deficiency is a well-known health concern, causing issues from fatigue to nerve damage, a much less common but still relevant question is about the potential toxicity of this essential nutrient. The good news is that, because vitamin B12 is water-soluble, excess amounts are typically excreted by the body, making toxicity from food sources almost impossible. However, high-dose supplementation, particularly via injections, can lead to elevated blood levels and potential side effects.

According to the National Institute on Alcohol Abuse and Alcoholism (NIAAA), combining alcohol with certain supplements can cause harmful interactions, including nausea, organ damage, and impaired coordination. Understanding which supplements should not be taken with alcohol is crucial for protecting your health and avoiding dangerous side effects.

According to reports by ConsumerLab.com, a significant percentage of multivitamin products have failed quality standards over the years, with some showing concerning levels of lead contamination. This fact highlights the critical question: Is there lead in vitamins, and what steps can consumers take to ensure they are purchasing safe, uncontaminated products?

According to SmartyPants, all of their formulas are third-party lab-tested for purity and potency to ensure that what's on the label is what's in the bottle. This commitment to quality and transparency is a core part of the brand's identity, but what does 'clean' truly mean for a supplement, and how do SmartyPants stack up?

Studies suggest that astaxanthin is generally considered safe for healthy adults at dosages between 2 and 12 mg per day. However, like any supplement, higher doses can come with potential side effects and may not provide additional benefits. Understanding the appropriate dosage for your health goals is crucial to maximize the antioxidant's benefits while minimizing risks.

The Recommended Dietary Allowance (RDA) for vitamin B12 is only 2.4 mcg for adults, so seeing much larger amounts like 600 mcg on a supplement label can be alarming. This significant difference often leads people to question whether 600 mcg of vitamin B12 is too much and if high doses are safe.

According to the National Institutes of Health, the tolerable upper intake level (UL) for vitamin C in adults is 2,000 mg per day. Exceeding this limit by consuming too much Emergen-C can lead to several adverse health effects, primarily due to its high concentration of vitamins and minerals.

According to a UPMC HealthBeat article from March 2025, while many supplement brands like Centrum are mentioned in the context of third-party testing, consumers must look for specific certification marks on the label. This naturally leads to the question: are Centrum Silver vitamins third party tested? The answer requires a closer look at what 'testing' means for a specific product and brand.

According to a study cited by the Cleveland Clinic, many people turn to supplements to fill nutritional gaps, but taking too many can be toxic and cause adverse side effects. This raises a critical question: Can I take 2-3 supplements a day and do so safely?