CBD and safety: side effects, interactions and precautions (2026)
Last updated : July 2026
CBD has the reputation of being a "natural" and safe product. This is generally true when it is well used and of good quality — But some points of vigilance deserve to be known before use, especially if you are taking medication.
Is CBD addictive?
No. Since 2018, the World Health Organization has considered CBD as non-addictive and generally well tolerated. Unlike THC, it has no recognized psychotropic effect.
What are the side effects of CBD?
The most frequently reported side effects in the scientific literature are:
- Sleepiness or fatigue;
- Mild digestive disorders (nausea, diarrhoea);
- In some cases, interactions with other medicines (see below).
These effects are generally moderate and dose dependent according to available studies.
Does CBD interact with drugs? (important vigilance point)
Yes, and this is probably the most important safety point to know. CBD is metabolised by the liver via the cytochrome P450 enzyme system — the same enzymes that degrade a large number of common medicines. It can increase or decrease their concentration in the blood, with sometimes significant consequences.
ANSM (National Drug Safety Agency) issued an official warning in March 2025, identifying interactions with several drug families, including:
- Anticoagulants;
- Antiepileptics;
- Benzodiazepines;
- Immunosuppressants;
- Antidepressants;
- Opioids.
If you are taking medication, especially a narrow therapeutic margin medication, always ask your doctor or pharmacist for advice before taking CBD. This is not an excessive precaution: it is an official recommendation of the health authorities.
Can we take CBD pregnant or breast-feeding?
No, caution should be exercised. Health authorities, including ANSES in France, strongly advise against the use of CBD during pregnancy and breast-feeding due to insufficient data establishing its safety in this specific context.
Is CBD safe for the liver?
Since CBD is metabolised by the liver, special vigilance is recommended in people with a liver history or following treatments requiring regular biological monitoring. A prior medical opinion is advised in these situations.
Is CBD compatible with alcohol?
As a precaution, it is recommended to avoid the combination of CBD and alcohol, both of which may potentially increase certain effects, including somnolence. In case of doubt, a health professional may advise you according to your situation.
How to limit risks: product quality above all
French health authorities report an increase in cases of intoxication related to questionable CBD products, including those containing synthetic cannabinoids not declared on the label. To limit risks:
- Always require a Certificate of Analysis (COA) issued by an independent laboratory;
- Check the traceability of the origin of the hemp;
- Avoid products without clear legal notice or uncertain provenance;
- Beware of unusual trade names that may mask banned synthetic cannabinoids.
In summary
- CBD is not considered addictive by WHO but is not without effect
- Drug interactions are the point of vigilance #1 — talk to your doctor if you are taking treatment
- Pregnancy and lactation: not recommended by health authorities
- Product quality (certificate of analysis, traceability) is your best protection
This article has a purely informative purpose and does not constitute a medical opinion. CBD does not replace treatment prescribed by a health care professional. If you are taking medication, pregnant, breast-feeding, or have a specific medical history, consult a health care professional prior to consumption.