4.9 163 Reviews

CBD Oil Vape Additive 300mg


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Our 300mg CBD Vape Oil Additive (in a 10mL bottle) is our high-strength concentration, formulated for experienced CBD users or those who know they want a particularly potent amount of CBD in their additive. While this product was designed to be mixed with your favorite e-juice, it is made from food-grade ingredients, meaning that it’s pure enough to be used as an oral tincture as well.

  • Full spectrum 300mg
  • 40/60 VG & PG ratio
  • Pairs easily with your favorite e-juices
  • Quality food grade ingredients

Proprietary Blend of Cannabidiol (CBD), Propylene Glycol and Vegetable Glycerin

300mg CBD Vape Oil Additive

WHY CBD VAPE OIL ADDITIVE 300mg? This is our “high concentration” CBD vape oil additive product, formulated for experienced users or those who want a strong potency CBD oil that’s pure enough to be used in vape juice or as a tincture.

THIS PRODUCT IS PERFECT FOR YOU IF: You know you need a strong concentration or you go through a lot of CBD vape additive. With higher-concentration additives like CBD vape oil additive 300mg, you use a smaller amount of the liquid to get your desired serving, which can be more cost-effective for you. 

WHY CBDFX? We make the best CBD vape additives because we use only high-quality ingredients. Our hemp oil comes from plants grown organically at our carefully supervised partner farms right here in the United States. The plants are certified organic, so our CBD vape oil additive 300mg contains no toxic pesticide residues or other harmful chemicals that may be found in other brands. With our full-spectrum CBD hemp oil, you get all of the plant’s fatty acids, terpenes, and amino acids. The other key components of CBDfx vape oil additives are common food-grade ingredients propylene glycol and vegetable glycerin, which work together to provide you with a consistent and satisfying puff of vapor.

HOW DO I USE IT? Follow the label instructions. CBD vape oil additive 300mg gives you a highly concentrated serving of CBD and has a strong herbal flavor. The sensible strategy for most users, especially those who are new to the product, is to start with a drop or two of CBD vape oil additive in a tank of vape juice or beneath your tongue. Increase serving as desired.


  • 300mg per 10ml bottle
  • 100% organically grown, full-spectrum CBD
  • Free of GMOs
  • All food-grade ingredients
  • Lab reports from independent testing for purity and quality are available for you to review
  • Made in the USA

What's the difference between CBD oil, CBD vape juice, and CBD additive?

The terminology about CBD can be confusing for consumers, especially because many brands don’t label their products clearly. But it is worth your time to understand the fine distinctions so you get exactly what you’re looking for.

Can this CBD additive be vaped or taken sublingually?

The quick answer to this question is both. The only ingredients in our CBD vape oil additive 300mg are CBD hemp oil, propylene glycol, and vegetable glycerin. The latter two are included to ensure that the oil vaporizes cleanly and puffs smoothly. But they are food-grade ingredients, so they’re safe enough to allow you to take the oil as a tincture with a few drops under your tongue or in your food or drink.

Is there 300mg of CBD oil in this additive?

CBDfx vape oil additive comes with a full 300mg of full-spectrum CBD in the 10ml bottle. CBDfx does not recommend specific amounts for our customers to enjoy per use. However, we have noticed that the average length of time one bottle lasts a customer is around a month.

Can I add the CBD oil vape additive 300mg to my own vape pen or device?

That’s exactly what it was designed for! Besides the full-spectrum CBD oil, the additive has only two other simple components—propylene glycol and vegetable glycerin. Those ingredients are commonly used in many brands of e-juice because they help the liquid to vaporize efficiently and puff smoothly.

View or download the latest Lab Test Results.

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U.S.A Made


163 Reviews | 24 Q&A's

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Casey H. Verified Buyer

Cbd has seriously changed my

Cbd has seriously changed my life my anxiety has gone down so much because of it


Wayne W. Verified Buyer

Wonderful product would recommend to

Wonderful product would recommend to all i know


Randy C. Verified Buyer

Great quality and easy to

Great quality and easy to use. Taste is neutral so it mixes well with all other vape juices. Effects and relief are as expected. Thank you CBDFX!


Tamara S. Verified Buyer




Tiffany W. Verified Buyer

Excellent product

I wasnt expecting to feel the effects so soon but I could tell the difference almost immediately. I followed the recommendation on the bottle for my vape tank and the flavor isnt overwhelming. Im definitely going to buy it again and have recommended to my friends for a number of reasons including anxiety, stress, pain, and for just an overwhelming sense of calm.


Emily W. Verified Buyer

Great products and customer service!

Great products and customer service!


V M. Verified Buyer

Fantastic stuff

This was my 1st try with CBD, off work with stress, nerves shot to bits.

Life changing to be honest. To find something like this that holds me without *any* THC effects - incredible...

I tried this in my ecig tank but didnthe like the taste in the Vape, but a dropper full worked really well under my tongue.

Top marks to CBDfx who posted me an extra bottle free of charge.

I was that impressed that I immediately ordered the high strength tincture oil.

This is the proper high quality stuff. No flavourings or gimmicks, just the real thing.


Tina A. Verified Buyer


With the additive it gives the extra pain relief and it really helps with my anxiety!
I have chronic pain that I have taken opiates for. I am now off the opiates and have a clear head but without pain do to CBDfx.


Lisa G. Verified Buyer

Great product and great service

Great product and great service


Kasper S. Verified Buyer

Works great and fast delivery!

Works great and fast delivery!


Elissa Verified Buyer

Q: How much do I drop under tongue to use as tincture.

Answer (1)
CBDfx Team

A: Hey Elissa,

Recommended serving is one dropper full. Please let us know if you have any other questions or concerns. Thank you.

Team CBDfx

Par Verified Buyer

Q: Are you able to /would you recommend adding this in with your CBD isolate?

Answer (1)
CBDfx Team

A: Hey Par,

You may absolutely add our CBD additives to our CBD Isolates. Please let us know if you have any other questions or concerns. Thank you.

Team CBDfx

Anne Verified Buyer

Q: First time trying a full spectrum vape, I am concerned about how dark and thick it is. I put a half dropper, mixed with my regular e juice and it looks like coffee with a little bit of cream. Is this normal? Also tried a few drops sublingually and it tastes pretty terrible.

Answer (1)
CBDfx Team

A: Hey Anne,

We appreciate you reaching out to us! May we kindly ask for an image of your product along with the batch number located at the bottom of the bottle? Thank you.

Team CBDfx

Ken Verified Buyer

Q: Does this have to be mixed with e-liquid, or can it be used on its own?

Answer (1)
CBDfx Team

A: Hey Ken,

Our CBD Vape additive may be vaped alone or added to one of our CBD Vape juices. Please let us know if you have any other questions or concerns. Thank you.

Team CBDfx

Ciaran M. Verified Buyer

Q: Do you deliver to Ireland?

Answer (1)
CBDfx Team

A: Hello Ciaran,

Thank you for reaching out to our support team. Unfortunately, we currently do not ship to your country and only ship to the countries listed in our billing/shipping form at checkout. We sincerely apologize for any inconvenience. Hopefully, we will be able to expand the range of our international shipping area in the future. Please let us know if you have any other questions or concerns. Than you.

Team CBDfx

Elaine Verified Buyer

Q: Will the small amount of thc cause a positive drug test at work?

Answer (1)
CBDfx Team

A: Hello Elaine,

We cannot guarantee that you will not fail a drug test as some tests are more sophisticated than others. Please let us know if you have any other questions or concerns. Thank you.

Team CBDfx

Camille Verified Buyer

Q: Has anyone used this additive with Nic Salt or does it only mix with Juice?

Answer (1)
CBDfx Team

A: Hey Camille,

It could be done without any issues but it may not be recommended as Salt Nicotine can be fairly harsh. Please let us know if you have any other questions or concerns. Thank you.

Team CBDfx

Oli Verified Buyer

Q: Does this product contain tocopheryl acetate / vitamin E acetate in any form? \n\n

Answer (1)
CBDfx Team

A: We have released a statement about all of these reports that are in the news lately. I have pasted it below for you to read through.
– – – – –

Today, we’re reassuring our customers and clarifying that CBDfx vape products have nothing to do with the recent CDC warning, or the recent vape contaminant investigations.

As most of our loyal customers know, we have made product purity the cornerstone of our approach to vaping from day one. We have never, and will never use ingredients like vitamin E acetate or harmful emulsifiers which are believed to be the cause of the recent events in the news. This can be verified by our publicly available independent lab reports.

No CBDfx products have been linked to any sort of negative reaction or impurity whatsoever.

These recent events underscore how important it is to only purchase your vape products from companies with the commitment and resources to ensure your safety and the purity of the vape pens and juices you use.

Thanks for continuing to trust CBDfx as your source for the CBD products you rely on.

D Verified Buyer

Q: I checked out the lab report but it's a little limited. Is there a more comprehensive report? I'm particularly concerned with heavy metals and pesticides, if that helps to clarify things.

Answer (1)
CBDfx Team

A: Hi D, We are proud to say we are partnered with an organic farm and use no pesticides and is certified to have no heavy metals.
The Team at CBDfx

Freddster Verified Buyer

Q: Hi, can I add this to VG? Would I have to heat the VG or the additive for them to mix properly?

Answer (1)
CBDfx Team

A: Never received product cause of your guys stupid shipping so I can’t review it

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