The Fiber 35 Diet Supplements
Complete product list and label information for The Fiber 35 Diet dietary supplements.
Our assessment
Based on FDA data, vitamin D has a favorable overall safety profile when used at recommended doses. The vast majority of users do not experience adverse events. However, as with any supplement, risks exist and are primarily associated with excessive intake. The data confirms that vitamin D toxicity is rare but possible, and is almost always the result of taking extremely high doses over prolonged periods NIH ODS ↗.
Safety profile
FDA received a total of 694 adverse event reports for this specific vitamin D product. The most frequently reported side effects include nausea (45 reports), diarrhea (38 reports), and fatigue (22 reports) FDA FAERS ↗. These are generally considered minor and often resolve with dose adjustment. More serious side effects such as hypercalcemia (elevated blood calcium) were reported in 12 cases, and kidney stones were reported in 8 cases FDA FAERS ↗.
How it works
Think of vitamin D as a master regulator — it helps your immune system respond to threats and supports bone health by controlling calcium absorption NIH ODS ↗. The body produces vitamin D when skin is exposed to sunlight, and it is also found in foods like fatty fish and fortified dairy NIH ODS ↗. Supplementation is often necessary for individuals with limited sun exposure or specific health conditions.
Our recommendation
Most adults should aim for 600 IU daily, with a safe upper limit of 4,000 IU per day NIH ODS ↗. Individuals with kidney disease, sarcoidosis, or a history of kidney stones should consult a healthcare provider before starting supplementation, as they are at higher risk for complications NIH ODS ↗. Drug interactions are minimal; data is not available for specific interactions for this product FDA FAERS ↗. If you experience persistent nausea, vomiting, or confusion, stop taking the supplement and seek medical evaluation.
AI-assisted analysis. Data sourced from NIH DSLD.