Best Vitamin D Supplement of 2025
By Joshua Shafley
Ever wonder why so many people are deficient in the sunshine vitamin? Maybe because we’re all indoors doom scrolling instead of outside getting natural vitamin D.
But since you’re already here, let’s find you a supplement that actually works.
I’ve analyzed the 5 best vitamin D supplements for 2025, looking at ingredients, testing, and what real humans say about them. Here’s what you need to know:
Sports Research® Vitamin D3 w/Coconut MCT Oil
It’s made by a family-run brand from Southern California that actually does third-party testing (shocking, I know).
Goli Ashwagandha & Vitamin D Gummies
They’re vegan, non-GMO, and free of gluten and gelatin – making them accessible to pretty much everyone.
Micro Ingredients Vitamin D3 5,000 IU + K2 MK-7 100 mcg
This supplement pairs 5,000 IU of vitamin D3 with 100 mcg of vitamin K2 in the MK-7 form (the premium, longer-lasting version).
Micro Ingredients Vitamin D3 10,000 IU + K2 MK-7 200 mcg
This is the heavy hitter for people with serious deficiencies or those who need therapeutic doses.
1. Sports Research® Vitamin D3 w/Coconut MCT Oil — 5000 IU
It’s made by a family-run brand from Southern California that actually does third-party testing (shocking, I know).
This is a high-potency supplement (5000 IU) that uses coconut-derived MCT oil to boost absorption. No seed oils, no GMOs, no gluten – just clean ingredients in an easy-to-swallow softgel.
The good stuff:
- MCT oil helps your body actually absorb the vitamin D
- Clean formula with minimal fillers
- Tiny softgels that don’t feel like you’re swallowing a horse pill
The not-so-good:
- Not explicitly vegan (though the ingredients are plant-based)
- Some studies show MCT oil doesn’t actually improve athletic performance (but that’s not why it’s here anyway)
People love this one – 4.7/5 stars on Amazon with tons of repeat customers. When people keep buying the same supplement, you know it’s doing something right.
2. Goli Ashwagandha & Vitamin D Gummies
They’re vegan, non-GMO, and free of gluten and gelatin – making them accessible to pretty much everyone.
If you’re one of those people who gags at the thought of swallowing pills, Goli’s got your back. These mixed berry gummies combine vitamin D with ashwagandha (KSM-66), which is basically nature’s chill pill.
Why you might like them:
- They actually taste good (revolutionary concept in supplements)
- Two-for-one deal with stress support from ashwagandha
- Perfect for the pill-averse
The downsides:
- Gummies generally have lower vitamin D doses per serving
- Probably contain some added sugar (because that’s how gummies work)
- You might need to take more to get therapeutic doses
Bottom line: If taste and convenience matter more to you than maximum potency, these are your jam.
3. Micro Ingredients Vitamin D3 5,000 IU + K2 MK-7 100 mcg
This supplement pairs 5,000 IU of vitamin D3 with 100 mcg of vitamin K2 in the MK-7 form (the premium, longer-lasting version).
Why is this combo smart? Because vitamin D tells your body to absorb calcium, and K2 makes sure that calcium actually goes to your bones instead of clogging up your arteries. Pretty important distinction.
The highlights:
- Classic dose that works for most people
- D3 + K2 combo is smarter than D3 alone
- 300 softgels means you won’t be reordering every month
The drawbacks:
- If you need higher therapeutic doses, you might need to take more than one
Users praise how easy these are to swallow, and health nerds appreciate the synergy between D3 and K2 for bone and heart health.
4. Micro Ingredients Vitamin D3 10,000 IU + K2 MK-7 200 mcg
This is the heavy hitter for people with serious deficiencies or those who need therapeutic doses.
This is basically the big brother of the previous supplement – double the D3 (10,000 IU) and double the K2 (200 mcg), plus virgin coconut oil for better absorption.
What’s good:
- High potency means fewer pills for those who need more vitamin D
- Coconut oil boosts absorption
- Still comes in that massive 300-count bottle
What’s not:
- This dose isn’t for everyone – could be overkill for maintenance
- Should probably check with your doctor before taking this much daily
Expert take: High-dose supplements like this should generally be taken with medical guidance. The added K2 is crucial at this dose to help manage all that calcium your body will be absorbing.
Quick Comparison
| Product | Vitamin D3 | Vitamin K2 | Form | Standout Feature | Who It’s For |
|---|---|---|---|---|---|
| Sports Research | 5000 IU | No | Softgel | Clean MCT oil | Clean label seekers |
| Goli Gummies | Lower dose | No | Gummy | Tasty, with ashwagandha | Pill haters, stress cases |
| Micro Ingredients 5000 IU | 5000 IU | 100 mcg | Softgel | D3+K2 combo | Daily supplementers |
| Micro Ingredients 10,000 IU | 10,000 IU | 200 mcg | Softgel | High-dose therapy | Deficient people under doctor’s care |
Final Thoughts
The Sports Research D3 with MCT oil stands out for clean ingredients and third-party testing. The Goli gummies are perfect if you hate pills. And the Micro Ingredients options give you smart D3+K2 combos at either standard or therapeutic doses.
Remember: even the best vitamin D supplement won’t fix a life spent entirely indoors, surviving on pizza and energy drinks. But it’s a start.