Doctor's Best Best Collagen Types 1 & 3

Our assessment

The evidence shows that Doctor's Best Best Collagen Types 1 & 3 provides a specific protein source, but the primary data we have relates to the calcium content often found in such supplements. Our assessment is that you should verify the exact calcium amount on the label, as this mineral has both benefits and significant risks at high intakes. Data for the collagen itself is not available in our provided sources.

How it works

If this product contains calcium, think of it as a structural supporter for your body. Calcium supports bone density and mineral deposition through bone mineralization, and it also helps with muscle relaxation and nerve signaling via neuromuscular relaxation [NIH ODS]. The collagen component is intended to support connective tissues, though specific data on its mechanism is not provided here.

Safety profile

There have been 592,059 total adverse event reports for this product category, though a specific breakdown for collagen is not available. For calcium, safety data shows that high levels can cause poor muscle tone, poor kidney function, low phosphate levels, constipation, nausea, weight loss, extreme tiredness, frequent need to urinate, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS]. Some research also suggests that high calcium intakes might increase the risk of heart disease and prostate cancer [NIH ODS].

Our recommendation

Start by checking the label for the exact calcium content per serving, as this is the primary risk factor. If you take other medications, be aware that calcium can reduce the absorption of bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS]. Without specific data on the collagen itself, we cannot recommend a dosage for that ingredient. Data not available for collagen-specific side effects or studies.

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