2,000 IU label strength
Vitamin D3
Foundational daily D3 at a 2,000 IU label claim, with heavy metals tested and published per batch.
$26.00
- Try it risk-free for 30 days. Not for you? Email Grant for a full refund. No need to send it back. Details
- Screened for heavy metals. An independent lab tested this batch for arsenic, cadmium, lead, and mercury, and all four passed. You can read the report for your lot. Read the report
- One softgel a day. 2,000 IU vitamin D3 as cholecalciferol. 100 softgels per bottle.
- $0.22 a serving on subscribe. $22.10 for 100 servings, shipped free. Skip or cancel anytime.
Micronized Creatine Monohydrate
5g a day for strength and power.
Complete Multivitamin
Two capsules for daily micronutrient coverage.
The Trinity Stack
All three products, free U.S. shipping. $94.00 if bought separately.
Made in an FDA-registered, cGMP facility. As seen on FOX59, CBS4 Indianapolis, and Inside Indiana Business. Questions go straight to Grant: grant@peakfusionsupplements.com
Supplement facts
Tap the Facts thumbnail in the product gallery to view the Supplement Facts panel.
Shipping
Ships from a U.S. fulfillment center. Free U.S. shipping on orders $75 or more. The Trinity Stack ships free.
Frequently asked questions
Questions about Vitamin D3
How much Vitamin D3 should I take daily?
The NIH Office of Dietary Supplements sets the adult RDA at 600 IU (800 IU over 70) and the adult upper limit at 4,000 IU. PeakFusion D3 provides 2,000 IU, and the multivitamin adds 400 IU, for 2,400 IU a day across the routine, within that upper limit. If you’re unsure about your level, ask your doctor about testing.
What is the difference between Vitamin D3 and Vitamin D2?
D3 (cholecalciferol) is the form synthesized in human skin and is significantly more effective at raising serum vitamin D levels than D2 (ergocalciferol). Research shows D3 is approximately 87% more effective than D2 at equivalent doses. PeakFusion uses D3 only.
When should I take Vitamin D3?
Take with a meal containing fat. Vitamin D3 is fat-soluble, meaning dietary fat significantly improves absorption. Morning or evening with a meal both work equally well — daily consistency is what matters.
How do I know if I am Vitamin D deficient?
Vitamin D levels shift with sun exposure and the seasons. In U.S. lab testing data, levels tended to peak in September and were lowest in March (Kroll et al., 2015). A 25(OH)D blood test through a healthcare provider is the only accurate way to assess your status.
How is PeakFusion Vitamin D3 tested?
Current lot VS240798 was independently tested for heavy metals (arsenic, cadmium, lead, and mercury) by ICP-MS/MS through an independent third-party lab, with every analyte in-spec. Full test results are publicly available on our lab results page.
Can I get Vitamin D3 on a subscription?
Yes. Subscribe & Save delivers a fresh bottle every 14 weeks at 15% off, timed to the 100-softgel supply. Skip, pause, or cancel anytime from your account, and every refill ships from the same third-party tested lots.
