If you’ve been told you’re low in Vitamin D (like most of us) and you’ve waded into the confusing world of supplements, you’ve probably heard the “big secret”: you must take it with K2.
If you’re looking to cut through the noise, protect your bones, and support your heart without spending a fortune, I’m going to tell you right now to buy the D3 + K2 supplement from Micro Labs—which you will find online under the brand name Micro Ingredients. This is the one. It’s affordable, has the exact right form of K2, and has become a non-negotiable part of my daily routine.
My Experience With Micro Labs D3 K2

My journey here started with a routine blood test. My doctor hit me with the classic line:
“Well, your Vitamin D is low. I want you to start supplementing.”
I, of course, went home and started researching. That’s when I fell down the rabbit hole.
I quickly learned that just taking D3 alone was, at best, inefficient and, at worst, potentially problematic.
The consensus from all my reading was that Vitamin D3 is the “gate-opener” that pulls calcium into your body. But without a director, that calcium can end up in the wrong places, like your arteries. That’s where Vitamin K2 comes in. K2 is the “traffic cop” that directs all that new calcium to your bones and teeth, where it belongs.
So, my mission was clear: find a combined D3/K2 supplement. I first stumbled onto the name “Micro Labs” in forums. People kept talking about this brand, but I was confused. When I searched, I found Micro Labs Limited, a massive, legitimate pharmaceutical company based in India. But I couldn’t find their D3/K2 supplement. Then I realized everyone was actually talking about Micro Ingredients, a brand that sells its supplements in large, minimalist-looking resealable bags. This brand confusion is super common, but I quickly confirmed that “Micro Ingredients” was the product everyone was reviewing.
I bought a bag of their “Vitamin D3 + K2” softgels. The dosage was exactly what I was looking for: 5000 IU of D3 and 100 mcg of K2 as MK-7 (Menaquinone-7), which my research suggested was the superior, more bioavailable form. The pills themselves are tiny. They are incredibly small, dark softgels that are suspended in sunflower seed oil, which is great because D3 and K2 are fat-soluble vitamins, meaning they need fat to be absorbed properly.
I’ve been taking one of these tiny softgels every morning with my breakfast for over six months now. I don’t “feel” it in the way I’d feel a cup of coffee. It’s not a magic energy pill. But what I have noticed is concrete. My follow-up bloodwork showed my Vitamin D levels are now in the optimal range for the first time in my adult life. I also just feel more robust. It’s subtle, but I’ve had fewer random aches, and I have a sense of security knowing I’m actively supporting my bone and cardiovascular health. For the price and the quality, this has been one of the easiest and most effective additions to my health regimen.
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Pros Of Micro Labs D3 K2

- The Perfect Formulation: This is the most important pro. Micro Ingredients (the brand you’ll buy) uses the correct, synergistic forms of these vitamins. You get D3 (Cholecalciferol), which is the most active form of Vitamin D, paired with K2 as MK-7 (Menaquinone-7). Many cheaper brands use the MK-4 form of K2, which has a very short half-life, meaning it’s out of your system in a few hours. MK-7 is the long-lasting, more bioavailable form that stays in your body for days, giving it more time to do its job of directing calcium.
- Clinically Relevant Dosages: The 5000 IU of D3 is a potent, but standard, dose for anyone looking to correct a deficiency or maintain levels (though you should always check with your doctor). The 100 mcg of K2 is the “gold standard” amount that research suggests is effective for partnering with this level of D3. They didn’t skimp on one or the other; the ratio feels balanced and purposeful.
- Incredible Value: This is where this brand just wins, hands down. You get a one-year supply (365 softgels) in a single bag for a price that is often less than what other brands charge for a 3-month supply. Because it’s a shelf-stable supplement, buying in bulk like this is a no-brainer. It makes the “cost per day” almost negligible.
- Clean Ingredients and Carrier Oil: I love that the ingredient list is short. It’s just D3, K2 (as MK-7), and a carrier oil. They use virgin sunflower seed oil, which is a healthy fat that ensures your body can actually absorb these fat-soluble vitamins. There are no weird fillers, soy, or gluten, which is a huge plus for me. The softgel is tiny and ridiculously easy to swallow.
- Third-Party Tested for Purity: This is a huge deal for a “bulk” brand. The “Micro Ingredients” packaging states that the product is 3rd Party Lab Tested for Purity and Safety. This is my minimum requirement for any supplement. It means an independent lab has verified that what’s on the label is what’s in the pill. This provides a level of trust that you just don’t get with untested brands.
- Minimalist, Resealable Packaging: While some people complain about the resealable bags, I actually like them. They create less plastic waste than a giant hard-plastic bottle, and the seal on mine has been perfectly sturdy. It’s easy to store in a cabinet and doesn’t take up much space.
Cons Of Micro Labs D3 K2
The Brand Confusion
- It’s Not “Micro Labs”: As I mentioned, this is the biggest “con” right out of the gate. If you’re looking for a supplement from “Micro Labs Limited,” the Indian pharmaceutical giant, this isn’t it. The brand is Micro Ingredients. This confusion can make it hard to find and can feel a bit misleading if you’re not prepared for it.
- Quality of the Packaging: The resealable bag is a “love it or hate it” feature. I’ve seen many user reviews where people complain that the “zip-lock” on the bag breaks after a few months of daily use. If that happens, you’ve got a bag of 300+ softgels that you have to dump into another container, which is annoying. I’d recommend being gentle with the seal.
Potential Dosage Issues
- 5000 IU Is Not For Everyone: This is a potent dose of Vitamin D. For me, it was perfect for correcting a deficiency. However, if you are just looking for a “maintenance” dose and your levels are already healthy, 5000 IU per day might be too much and could lead to Vitamin D toxicity over time. This isn’t a “con” of the product itself, but a warning: you must know your D levels before starting a high-dose supplement.
- The Softgels Can Stick Together: This is a common complaint with this product. In warm or humid weather, the softgels can clump together into a giant, oily brick inside the bag. The fix is easy—just give the bag a good shake or smack it on the counter—but it can be alarming the first time you see it. It doesn’t affect the quality, but it’s an unrefined part of the experience.
Maintenance Tips For Micro Labs D3 K2
Getting The Most Out Of Your Supplement

- Know Your Numbers First: I cannot stress this enough. Before you buy this, go get a simple blood test (the 25-hydroxyvitamin D test) from your doctor. Do not guess. You may only need 1000 or 2000 IU. Starting on 5000 IU when you don’t need it is a waste of money and potentially harmful.
- Take It With Fat, Every Morning: These are fat-soluble vitamins. I take mine with breakfast every day. Whether it’s with your eggs, avocado toast, or just a glass of whole milk, that little bit of dietary fat will ensure the D3 and K2 are properly absorbed by your body. Taking it on an empty stomach is far less effective.
- Be Gentle With The Bag: Treat the resealable “zip” at the top of the bag with a little respect. Don’t just rip it open. Use your fingers to gently pull the two sides apart. If you treat it carefully, it should last you the full year. If it breaks, just transfer the softgels to an empty, dry (and dark) vitamin bottle.
- Store It In A Cool, Dark Place: Like all supplements, especially those in oil, heat and light are the enemy. They will degrade the product. Don’t leave the bag on your sunny kitchen counter. Store it in a cool, dark cabinet or pantry. This will also help prevent the “softgel brick” from forming.
- Watch For Blood Thinners: This is a critical medical tip. Vitamin K’s job is to help with blood clotting. If you are taking any anticoagulant (blood-thinning) medication like Warfarin (Coumadin), you must talk to your doctor before taking any supplement that contains Vitamin K. It can directly interfere with your medication.
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Comparison With Other Brands
Micro Labs (Ingredients) Vs. Thorne D3/K2
- Brand Reputation And Cost: Thorne is a “practitioner” brand, meaning it’s one of the most trusted and recommended by doctors and naturopaths. Its facilities are NSF-certified, which is the gold standard. You pay for that trust—Thorne’s D3/K2 is significantly more expensive per dose than Micro Ingredients.
- Form And K2 Type: Thorne’s main D3/K2 product is a liquid, not a softgel. This is great for people who hate pills or want to customize their dose (e.g., 5 drops instead of 10). However, Thorne’s multi-vitamins often use a mix of K1 and K2 as MK-4, which is that shorter-acting form. Micro Ingredients’ use of MK-7 is, in my opinion, a major advantage.
Micro Labs (Ingredients) Vs. NOW Foods D3 & K2
- Brand Legacy And Trust: NOW Foods is another powerhouse of trust. They’ve been family-owned since 1968 and are known for their in-house labs and commitment to quality (they are GMP-certified). Their price point is very competitive and often close to Micro Ingredients.
- The K2 Difference: This is the most important comparison. The popular NOW Foods D3/K2 supplement uses Vitamin K2 as MK-4. As I’ve said, this form is less bioavailable and has a shorter half-life than the MK-7 in the Micro Ingredients product. For me, this makes Micro Ingredients the clear winner, as I want my K2 working for me all day, not for just a few hours.
Micro Labs (Ingredients) Vs. Ritual
- Traceability And Verification: Ritual’s whole brand is built on transparency. They have traceable ingredients (you can see where every single component comes from) and their products are USP Verified—another top-tier, third-party certification. They also use the high-quality MK-7 form of K2.
- Cost And Formula: Ritual is a luxury, subscription-based multivitamin. You can’t just buy their D3/K2; it’s included as part of their comprehensive multi. This is great if you want an all-in-one solution, but it’s vastly more expensive and over-the-top if you only need D3 and K2. Micro Ingredients lets you buy just what you need.
Frequently Asked Questions (FAQ)
This is subjective, but the “best” brand is one that:
Uses Vitamin K2 as MK-7 (Menaquinone-7) for its superior bioavailability and long half-life.
Provides a clear, synergistic dose (e.g., 100 mcg of K2 for every 1000-5000 IU of D3).
Is verified by a third party, such as NSF Certified, USP Verified, or at a minimum, is cGMP-certified and states it is “third-party tested.” Brands like Thorne, Ritual, and NOW Foods are consistently ranked as top-tier, trustworthy brands, though you must check their labels to ensure you’re getting the MK-7 form of K2.
Yes, but this is the source of the confusion. Micro Labs Limited is a very large, legitimate, multi-billion-dollar pharmaceutical company based in India, founded in 1973. They are not known for making this supplement. The brand you are likely thinking of is Micro Ingredients, which is also a legitimate supplement brand that states its products are third-party tested for purity and safety. So, yes, both companies are legit, but you’ll be buying from Micro Ingredients.
The side effects are not typically from the combination but from taking toxic-level high doses of Vitamin D. This condition is called hypervitaminosis D, and it leads to hypercalcemia (a dangerous buildup of calcium in your blood). The K2 is included to help prevent this. Symptoms of too much Vitamin D include:
Nausea and vomiting
Weakness and fatigue
Frequent urination
Bone pain
Kidney stones
Additionally, the Vitamin K component can interfere with blood-thinning medications like Warfarin.
There is no single “#1” company, but the most trustworthy companies are those that voluntarily submit to rigorous, independent, third-party testing. You can identify them by looking for these seals on their bottles:
NSF Certified (or NSF Certified for Sport)
USP Verified These certifications guarantee that the product contains what it claims, is free of contaminants, and has been manufactured properly. Brands that are famous for this level of quality include Thorne, Ritual, Momentous, and NOW Foods (which is cGMP-certified).
Conclusion
So, is the D3 + K2 from Micro Labs (Micro Ingredients) worth it? Absolutely, one hundred percent, yes. In a confusing and overpriced supplement market, this product is a beacon of common sense.
You get the exact formulation you should be looking for—high-potency D3 paired with the superior MK-7 form of K2—for an incredible value. If you know you need to supplement your Vitamin D and you want to do it the smart way by protecting your arteries and supporting your bones, you should buy this. It’s the easiest health decision I’ve made all year.