CBD can alter the effects of other medications, a common blood thinner, warfarin, a heart rhythm medication, amiodarone, a thyroid medication, levothyroxine, several seizure medications including clobazam, lamotrigine, and valproate. CBD inhibits some enzymes in this family. This causes certain medications to break down more slowly, which may increase side effects unless the doctor adjusts the dose. On the other hand, CBD induces other enzymes in this family, which accelerates the breakdown of certain drugs, so they may be less effective unless the dose is increased.
The usual formulation of CBD is oil, but CBD is also sold as an extract, vaporized liquid and oil-based capsule. Considering that CBD has so many potential health benefits, you may start to wonder if it can interact with certain medications that are used to treat the same symptoms and whether or not you should take these CBD medications. However, CBD products that contain more than 0.3 percent THC still fall under the legal definition of marijuana, making them federally illegal but legal under some state laws. In addition to more traditional means of cannabis use, such as smoking, there is a growing interest in CBD oil, which only contains CBD and not the psychoactive component of cannabis, delta-9-tetrahydrocannabinol (THC).
Also, keep in mind that the FDA has not approved CBD products without a prescription and that some products may be incorrectly labeled. The growing number of cannabis-derived products on the market may offer a variable concentration of the cannabinoids THC and CBD. CBD patches may be hard to find, but they are an easy way to take CBD and can help relieve aches and pains. CBD acts on the same metabolites as grapefruit, so many of the prescription drugs that carry grapefruit warning labels may have similar risks when taken with CBD.
However, more research is needed to determine the severity of CBD interactions between different drugs and to develop recommendations for taking them together with CBD. If you're taking CBD with medication, it's important to watch for any potential changes in how the medication or CBD affects you. Currently, the only CBD product approved by the Food and Drug Administration is a prescription oil called Epidiolex. That said, this versatility is also why CBD interacts with so many prescription drugs and over-the-counter (OTC) PRODUCTS.
We have very little information about OTC CBD products and how they can interact with other medications, says Dr.