New Sun Fiber Cleanse with Cascara & Oat Bran

Our assessment

The evidence shows that New Sun Fiber Cleanse with Cascara & Oat Bran contains calcium, a mineral with established benefits for bone health. However, we must be very clear: the data provided does not include any specific information about the effectiveness of this product for "cleansing" or its other ingredients like cascara or oat bran. Our assessment is limited to the calcium content, for which the data shows it supports bone mineralization and neuromuscular relaxation [NIH ODS].

How it works

Think of the calcium in this product as a structural builder — it supports bone density and mineral deposition, helping to keep your skeleton strong [NIH ODS]. It also plays a role in neuromuscular relaxation, which supports muscle relaxation and nerve signaling [NIH ODS]. For any other claimed benefits of the "Fiber Cleanse" or its cascara and oat bran components, the data is not available.

Safety profile

The FDA has received a total of 592,059 adverse event reports across all products, but specific report counts for this product are not available. Regarding calcium specifically, very high levels can cause poor muscle tone, poor kidney function, constipation, nausea, weight loss, extreme tiredness, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS]. Some research also suggests high calcium intakes might increase the risk of heart disease and prostate cancer [NIH ODS]. Calcium can also reduce the absorption of medications like bisphosphonates, tetracycline antibiotics, and levothyroxine [NIH ODS].

Our recommendation

We recommend caution. Because the data does not provide specific evidence for the "cleanse" or "fiber" components of this product, we cannot recommend it for those purposes. If you are considering this product for its calcium content, be aware of the potential risks from high intake and the interactions with medications. You should consult your healthcare provider before using this product, especially if you take prescription medications or have a history of kidney or heart problems [NIH ODS].

Supplement labels contain several key sections regulated by the FDA:

• Serving Size — The recommended amount per dose. Always check this — some products require multiple capsules per serving.
• Amount Per Serving — Shows the quantity of each nutrient in the product, typically in IU (International Units), mg (milligrams), or mcg (micrograms).
• % Daily Value (%DV) — Indicates how much a nutrient in a serving contributes to a daily diet. 5% DV or less is low; 20% DV or more is high.
• Other Ingredients — Lists inactive ingredients like fillers, binders, and capsule materials (e.g., gelatin, cellulose, magnesium stearate).
• Suggested Use — The manufacturer's recommended directions for taking the supplement, including timing and dosage.

Source: FDA Dietary Supplement Labeling Guide