To be sure, that notion is more theoretical than proven. And only a small amount of THC—as low as the 0.3 percent cutoff required for CBD products made from hemp—may be needed to enhance CBD’s therapeutic effect.
Products made with hemp grown overseas can be even more problematic, because they are not subject to any state or federal testing, say both Lanier and Boyar. “There needs to be testing results available to consumers,” Lanier says, “and manufacturers should follow the FDA’s guidance for good manufacturing practices.”
3. For Products From Hemp, Find Where It Was Grown
One is making sure that plants don’t absorb any of the potentially harmful chemicals that might be in the soil. The other is how much of the plant’s two key compounds they contain: THC (tetrahydrocannabinol), which gets users high, and CBD (cannabidiol), which is gaining increasing attention for its potential health benefits.
That’s important to farmers like Meyer, and to consumers. When a plant contains 0.3 percent or less THC, the federal government considers it “industrial hemp,” and by Colorado’s and most states’ reckoning, can legally be formulated into oils, tinctures, topicals, and capsules, and widely sold to consumers. But if a plant has THC levels above 0.3 percent, the federal government considers it marijuana, and even states where it is legal sharply limit where the products can be sold.
Some research suggests that in some people, CBD may work better when it’s combined with at least a little THC, says Martin Lee, director of Project CBD, an advocacy group that supports CBD research and the author of "Smoke Signals: A Social History of Marijuana—Medical, Recreational, and Scientific" (Scribner, 2012). This is called the “entourage effect,” Lee says, the idea that the sum of the two chemicals, plus other related compounds in the plant, is greater than their individual parts.
Seven of the oils contained contaminants from the solvent extraction process, at a level above food safety limits (although within permitted pharmaceutical limits).
Only 11 of the products were within 10% of the advertised CBD content and 11 actually contained less than 50% of the advertised CBD.
I find that one drop in the morning is enough to clear my fog of anxiety, and a drop at night sends me into a blissful slumber. However, this potent oil is definitely not one to start your CBD journey with – try it only once you’ve tested lower strength oils.
How do I know which brand to trust?
I started taking by four drops (10mg) every morning, but discovered I needed more.
If you’ve tried various strengths of reputable CBD and find it does nothing for you, your genetics may be to blame.
‘This is the question I get most often with CBD and it’s not dissimilar to taking any other supplement,’ Planet Organic buyer Al tells Metro.co.uk.
The current laws regarding CBD products in the UK state that they cannot contain more than 0.2% THC.