Premier Research Labs D3 Serum 5000 IU

29 Reviews
Get liquid vitamin D3 and discover a way to absorb the benefits of the sun - even when you aren't getting outdoors.Read More >

Select options

In Stock
Ships today if you order in the next 6 hours 26 minutes.
What's this?
In Stock
Ships today if you order in the next 6 hours 26 minutes.
  • NHC Guarantee
  • 60-Day Return Policy

Customer Reviews


29 Reviews

  • 5 stars
  • (26)
  • 4 stars
  • (2)
  • 3 stars
  • (1)
  • 2 stars
  • (0)
  • 1 star
  • (0)

Best vitamin D3 I've ever used!

My neurologist recommended this product to boost my low vitamin D levels. She said that vitamin D is much better absorbed sublingually than in the digestive tract and shared that she uses this product herself. Within 2 weeks or so I noticed my energy gradually starting to increase. It's so easy to use, virtually tasteless and a great value. It shipped quickly, arrived fast and was packaged very well. I'll definitely continue to order this product and will be happy to try more items from this company!

The one

Quite possibly the best D3 on this or any other planet. My D3 lab test are always on point since taking this.

I Love It

I purchased this item for the first time. I place two drops in orange juice. What I loved about this product is that it's easy carry and use when traveling as opposed to carrying capsules. I really appreciated this as I traveled out of the country recently.

Great product

Great product

PRL D3 Serum

It is a great way to obtain this supplement. No nasty taste either. This is a quality product.

d3 drops

easy way to include d3 in the diet. I squirt this on a spoon of food or liquid . I always take this with some fat like coconut or olive oil or eggs.

D3 Serum 1000IU

Premier Research Labs is a highly regarded brand I trust ever since my chiropractor recommended it after having done a lot of research herself. I've not been disappointed yet.

Best D3

I highly recommend this product.

5 star

you make it a very easy process to order products



D3 essential

D3 is taken daily and I feel great!


I am disappointed it now comes in 1000 IU per drop as it used to be 2000. I have taken this for at least six years. I am very disappointed in the per drop change.

D3 Serum 1000IU

I have been purchasing D3 Serum 1000IU for a couple of years. When i recently reordered they had changed to a dropper lid, thank you for that, much easier to dispense. But they also cut the IUs in half and did not lower the price to reflect that. That was a surprise since I didn't notice until I received it. The price doubled for the amount I need to take.

D3 Serum

I use this product daily and so does my entire family. I have recommended is use to friends and family as well.

Quality product

My spouse and I are both maintaining healthy levels. Absorbs well.

good source of vit D3

I prefer vit D3 in liquid. This Premier Labs D3 Serum was recommended to me by my holistic doctor.

Great product!

Our whole family take this.

sunshine in a bottle

I easily maintain my healthy vitamin D level with these D3 Serum 1000IU, .46 Oz, Premier Research Labs drops.

D3 Serum, .5oz, Premier Research Labs

This is my second purchase of D3 Serum. I use 1drop per day w/juice. Blood test by my doctor confirms that it works great. Quality product at a reasonable price.

D3 Serum

Prior to the discovery of D3 Serum I was ingesting Vit D in a capsule. The D3 liquid is easier to take. The price is competitive, but more importantly is the quality of the product itself, works great!

Great Product

My doctor recommended D3 Serum 1000IU last year and I haven't looked back since.

D3 Serum 2000IU, Premier Research Labs

This product was highly recommended to me by my nutritionist. I had been taking another Vit.d3 product and didn't seem to be helping. This one has done wonders for me and I seem to feel the difference on a physical level. I take about 4 drops with a meal (absorbs more readily this way) and it's done. A bottle will last a good while and it totally worth it. I feel it is an exceptional product for the price. I am a vegan and this product meets my standards and I am just pleased as can be with the results. This stuff works! Thanks so much to Natural Healthy Concepts for carrying such a primo product at a reasonable price. I will be purchasing this Vit.D3 product from them from now on.

very good

Love D3 Serum 1000IU. I recently ran out and couldn't find it anywhere. Natural Healthy Concepts had it in stock, ordered on Friday, it was at my door on Monday. Thank you for fast delivery.

Powerful D3 Serum -Works Great!

Best D3 serum on the market. A little goes a long way. This is safe for the whole family. Don't use any Rx D3, this is all you need. Also, can be used on your skin. Works well for dry lips.


D3 Serum 1000IU is an easy way to get my vitamin D. My doctor said I needed 2 drops/day.

What Customers Are Saying

"I've been buying Probiotics from Natural Healthy for the past 3 years. I've been very pleased with all my purchases. Great customer service also!"
Robin H.Verified Customer
"Natural Healthy Concept products are amazing! Everything I have ordered had arrived on time and exactly as I wanted!"
Lauren M.Verified Customer
"I couldn't be more pleased with the prices and excellent service provided. I have always received the right products and delivery is fast. So much easier (and cheaper) than going to my doctors office."
Noel S.Verified Customer