Product Comparison
Compare the three dosing tiers head-to-head — maintenance, deficiency correction (gated), and the precision-drops format. The comparison runs on the only honest axis: dose matched to bloodwork, form matched to need.
At a glance
Thorne Vitamin D-1,000
NatureWise Vitamin D3 5,000 IU
Ddrops Liquid Vitamin D3
Multi-dimensional comparison
Multi-dimensional Comparison
| Metric | 🏆Thorne Vitamin D-1,000 Thorne | NatureWise Vitamin D3 5,000 IU NatureWise | Ddrops Liquid Vitamin D3 Ddrops |
|---|---|---|---|
| Delivery Form | Capsule | Softgel | Liquid Drops |
| Strength | 1000 IU | 5000 IU | 1000 IU per drop |
| Servings / Container | 120 | 360 | 365 |
| Retail Price | $17.00 | $14.99 | $16.99 |
| Cost / Serving | $0.14 | $0.04BEST 💰 | $0.05 |
| Overall Score | 90/100 | 83/100 | 83/100 |
| 3rd-Party Testing | None | None | None |
| Vegan Friendly | — No | — No | — No |
Did you know?
The test decides the tier
Maintenance (1,000–2,000 IU) for most adults; correction (4,000–5,000 IU) for documented deficiency, physician-guided, with retesting; drops for titration between the numbers. The blood test — not the marketing — picks the product.
The unsupervised ceiling
The IOM's tolerable upper intake level — the dose above which physician involvement is required. The 5,000 IU product exists for deficiency correction under supervision, never as a daily default.
The absorption rule
Fat-soluble means with-fat: softgels carry their own oil vehicle; capsules and drops want the meal to supply it. Half the dose is the timing.
The rhythm rule
Daily dosing outperformed boluses in the infection meta-analysis, and the megadose trial proved annual spikes harmful. The skin's steady rhythm is the dosing template — daily, moderate, sustained.
The drops advantage
Liquid D3 delivers dose precision — children's 400–600 IU, pregnancy's higher targets, and adult titration all become drop-counting. The format that makes test-guided dosing practical.
The sun still counts
Ten to thirty minutes of midday summer sun out-delivers every product on this page — free, self-regulating, and unavailable November-through-March at high latitude. The supplement is the sun's understudy, not its replacement.