Oversized Vitamin B tablets caused bright urine; excellent customer service resolved issue with refund and capsule alternative.
Massive Vitamin B tablets led to bright yellow urine; responsive company issued refund and suggested capsule alternative despite user switching brands.
This review is from Amazon.com for product:
Multivitamin for Men - Daily Mens Multivitamins & Multiminerals with Vitamin D, Vitamin C, B12 Zinc & More. Essential Vitamins for Men for Energy, Focus, Stamina, Performance, Mens Health. 60 Capsules
The pills are HUGE! (See pic with ruler.) I wish the company would have a picture of the tablet pills with dimensions because they could have saved both myself and them the trouble. Also, the tablets turn urine yellow. Many B vitamin products will turn urine yellow, but this was pretty bright and more than once a day. The company was EXTREMELY HELPFUL and refunded my money. They also offered a capsule version to try for free, which they say is smaller. I decided to a different direction with another brand and cannot speak for their capsules.
Vitamin Basics & Tips
Vitamin B supplements, particularly those containing B2 (riboflavin), often cause bright yellow urine due to excess water-soluble nutrients being excreted. This harmless effect – called flavinuria – occurs because the body can only absorb limited amounts of riboflavin at once. The intensity of discoloration depends on dosage and individual metabolism, with tablet forms sometimes releasing nutrients more abruptly than capsules.
Tablet size frequently impacts user compliance, as larger pills can be difficult to swallow. Many manufacturers now offer capsule alternatives or split-dose regimens. When choosing B-complex vitamins, consider timed-release formulas or methylated versions (like methylcobalamin for B12) for better absorption. Always check label measurements, as pill dimensions aren’t always clearly advertised.
While B vitamins are generally safe, extremely high doses may cause nerve tingling (B6) or mask other deficiencies. The National Institutes of Health recommends daily values of 1.3mg B1, 1.3mg B2, and 2.4mcg B12 for adults. Those experiencing persistent urine discoloration or digestive discomfort should consult healthcare providers about adjusting their supplementation strategy.
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