GET UP TO 25% OFF w/code: GLOWUP

CBD Vape Oil
Additive 300mg

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.

Out of stock


Glowup Chevron Productpage
  • CBDfx CBD Hemp Additives 300mg 3pk
  • CBDfx CBD Hemp Additives 300mg vape kit bundle
  • CBD Oil Vape Additive – 300mg
  • Vape Additive 300mg
  • CBDfx CBD Hemp Additives 300mg 3pk
  • CBDfx CBD Hemp Additives 300mg vape kit bundle
  • CBD Oil Vape Additive – 300mg
Solvent Free Extraction
The way your CBD is sourced matters -- a lot. CBDfx’s cutting edge supercritical CO2 extraction methods set the industry benchmark for purity and safety. Other brands use solvent-based extraction methods, which leave trace amounts of nasty substances like butane and propane in the final product. Over time, that’s a lot of chemicals to ingest… when all you wanted was pure CBD. Trust CBDfx to deliver clean, solvent-free products every single time, backed up by publicly available lab reports.
3rd Party Lab tested
While many companies like to make claims about the potency and purity of their CBD products, not as many can provide the evidence to back it up. We offer you a full, independent third-party lab report with each purchase that details the order’s contents. These reports describe the amount of each compound present in a given product, and also provide a guarantee that no dangerous materials such as heavy metals or chemicals are present. You don’t need to take our word on the potency of our products; we let these reports do all the talking for us.
Cruelty Free Products
In keeping with CBDfx’s focus on ethical, sustainable product sourcing and manufacturing, we’re proud to boast a full line of cruelty-free products that are never tested on animals. In fact, the majority of our product line is vegan, organic, and intentionally designed to help you feel good about what you’re taking every day.
Made in the U.S.A
At CBDfx, we know that the highest quality hemp plants are grown here in the USA -- and we also know that investing in America’s farmers is the best way to make the CBD economy work for everyone. As the humble hemp plant is finally having its national moment, we’re doing our part to make sure that we’re teaming up with farms and laboratories right here at home to create jobs for everyday Americans.
30 day Guarantee
We’re not happy until you’re happy! Your satisfaction is important to us, and we want to ensure that every product we ship out is up to the high-quality standards that we have set and maintained for ourselves over the years. You have the option to receive a full refund on qualified, unopened, unused items within the first 30 days after making a purchase.

About Our CBD Vape Additives

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
Weight1.8 oz

CBDfx 300mg.


Single Pack, 3 Pack, 12 Pack, Add a Vape Kit


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

  • For Vaping: ½ to 1 full dropper per tank of e-liquid, based on preference


What are the differences between CBD oil, CBD vape juice, and CBD additives?

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.

With CBDfx, all of these CBD-infused liquids start with full- or broad-spectrum hemp oil, which includes important active components such as terpenes and amino acids. The differences in CBD oil, vape juices, and additives come when the oil is mixed with other ingredients to change the way the product interacts with your body. To make CBD oil tincture, which you take orally via a few drops under your tongue or by adding it to food or a drink, CBDfx blends the hemp oil with MCT (medium-chain triglyceride) oil, which is composed of fatty acids that help your body quickly and easily absorb the CBD. 

CBD vape juices are formulated for use in standard vape kits. To ensure that the CBD heats up and vaporizes properly, the oil is mixed with propylene glycol and vegetable glycerin, two natural ingredients that are commonly used in vape liquids (often referred to as e-juice). CBD vape juices also typically come with flavorings that give the user a taste of fruit or other sweets while they puff.

CBDfx vape oil additives also feature full-spectrum CBD hemp oil blended with propylene glycol and vegetable glycerin. The additives, however, are designed to be used along with any e-juice, so you can get the experience of CBD while you still enjoy your favorite brands and flavors of e-juice. You simply add half a dropper or more of CBD vape oil additive to your vaporizer’s liquid tank. This approach lets you craft the perfect blend of e-juice and CBD oil for your tastes and needs.

By the way, CBDfx vape oil additives have just three components—CBD hemp oil, propylene glycol, and vegetable glycerin—and they are all food-grade ingredients, so you can take them orally, just as you would a tincture.

Learn more about the difference between CBD hemp oil and CBD oil.

Can the 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.  

Are 300mg of CBD oil in the 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 vape oil additive 300mg to my own vape pen?

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.

You can add a few drops of CBD vape oil additive 300mg to the e-juice tank of any vape pen or rig.

CBDfx Lab Report




shopping from the UK / Europe?

Your cart has been updated