The vast majority of CBD oils come in bottles measuring either 15 milliliters (mL), or 0.5 ounces; or 30 mL, or 1 ounce. However, CBD concentration is more important than bottle size. Concentration refers to the ratio of hemp oil solution (measured in mL) compared to the amount of CBD cannabinoid (measured in milligrams, or mg). A 15-mL bottle may contain 100 mg of CBD, 300 mg, 500 mg, or more. The higher the mg amount, the stronger the CBD oil will be. For this reason, the ‘mg’ measurement is also referred to as the oil’s strength; i.e., 400-mg oil might be called 400-strength oil.
Cannabidiol (CBD) is a naturally occurring compound found in the resinous flower of cannabis, a plant with a rich history as a medicine going back thousands of years. Today the therapeutic properties of CBD are being tested and confirmed by scientists and doctors around the world. A safe, non-addictive substance, CBD is one of more than a hundred “phytocannabinoids,” which are unique to cannabis and endow the plant with its robust therapeutic profile.
Lisa Hamilton, a jeweler and doula in Brooklyn, NY, knows about the side effects. She recently tried CBD for the shoulder pain that plagued her five years after an accident. Her doctor certified that she was in chronic pain, which under New York State law allowed her to buy from a state dispensary. One Friday, she swallowed two 10-mg capsules, the amount recommended at the dispensary, then took another two on Saturday. “By Sunday, it felt like I’d gotten hit by a truck. Every muscle and joint ached,” Hamilton says. She cut back to one pill a day the following week, but still felt hungover. She stopped after that.
Most human studies of CBD have been done on people who have seizures, and the FDA recently approved the first CBD-based drug, Epidiolex, for rare forms of epilepsy. Clinical trials for other conditions are promising, but tiny. In one Brazilian study published in 2011 of people with generalized social anxiety disorder, for example, taking a 600-mg dose of CBD (higher than a typical dose from a tincture) lessened discomfort more than a placebo, but only a dozen people were given the pill.
Yes, the words “CBD tincture” and “CBD oil drops” are used interchangeably to describe drops of CBD oil that users place under the tongue. For optimal results, we recommend that you hold the drops under your tongue for up to 60 seconds. This process allows the CBD oil to absorb sublingually into your bloodstream through the mucous membranes in your mouth.
When it comes to CBD oil, NuLeaf Naturals is practically a veteran of the industry. Founded in 2014, this company has been offering simple, no-nonsense legal CBD for five years. NuLeaf uses specially bred therapeutic hemp plants that contain high levels of CBD and other beneficial cannabinoids like CBC, CBG, and CBN while maintaining low levels of the psychoactive cannabinoid THC.

Employee-owned Lazarus Naturals touts its commitment to ethical business practices, including pricing that aims to enable anyone to sample its range. Indeed, for veterans and those with long-term disabilities, there’s even a commendable 40-percent discount on the company’s wares. Customers wanting more bang for their buck could, then, try Lazarus Naturals’ 3,000 mg flavorless CBD tincture, a 60 ml bottle of which costs $125, though an even more potent 6,000 mg tincture is also available. Plus, the supplier’s handy and inexpensive taster packs may be a boon for more indecisive or novice CBD oil users. These packs come in regular and high-potency varieties, both of which contain samples of the company’s tinctures, capsules and CBD-infused coconut oil.

*[A couple things of note before I begin the reviews. In order to avoid redundancy and limit repeating myself dozens of times over, be advised that (unless otherwise noted), all of the companies listed below employ standard practices that are used by all of the best CBD oil companies, including things like: solventless CO2 extraction, 3rd party laboratory testing, legal THC limits below 0.3%, shipping to all 50 U.S. states, etc..]
Spruce was founded by Tony Spencer, who had a clear mission for his company—give people access to safe and effective lab-grade, hemp-based CBD. Spencer realized that many other CBD oils on the market were low-potency and simply didn’t work. “We have a lot of customers in pain who have wasted money on CBD products in the past that didn’t work for them,” remarks Spruce on their website.
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