CBD Safety: What to Know First

Side Effects and Medication Interactions

The FDA identifies risks including liver injury and interactions with medicines. Reported effects include drowsiness, diarrhea, changes in appetite, and changes in mood. Combining CBD with alcohol or other substances that slow brain activity can increase sedation.[1]

Bring a complete medication and supplement list to your clinician or pharmacist. Include over-the-counter products. Ask about interactions, the condition you want help with, and established treatment options.

Pregnancy and Breastfeeding

The FDA advises avoiding CBD, THC, and marijuana during pregnancy and breastfeeding. There are important gaps in knowledge about effects on a developing baby.[2]

Raise questions about symptoms and medicines with your pregnancy-care team. A label describing an ingredient as natural does not settle those questions.

Why Liver Safety Deserves Attention

A 2025 FDA-led randomized trial studied healthy adults given CBD at 5 mg per kilogram of body weight per day for 28 days. Some participants developed elevated liver enzymes. The findings add to concerns about effects that a person may not feel.[3]

This trial used a specific dose and duration. It cannot establish the risk of every product or a universally safe amount. Ask a clinician what the findings mean for your health and whether monitoring is appropriate.

Children, Storage, and Unexpected Effects

Keep CBD and THC products out of children’s reach in child-resistant containers. Sweet-looking products can be confused with ordinary food. The CDC advises urgent medical attention for immediate danger from these products.[4]

If there is a severe reaction or a child may have swallowed a product, contact emergency services or poison control promptly. Bring the packaging and ingredient information if available.

Questions to Bring to an Appointment

• Could this product interact with any of my medicines or supplements?
• Do my health conditions make it a concern?
• What treatments have evidence for the symptom I want to address?
• Is any monitoring needed?
• Which symptoms should prompt medical attention?

This guide explains safety issues. It does not give a personal dosing plan or replace medical care.

Make the Safety Conversation Specific

A general statement that a substance can have risks is useful, but a personal discussion needs more detail. The exact product, the reason for considering it, your medicines, and relevant health history help a clinician decide which questions matter most.

Include occasional medicines and supplements as well as daily prescriptions. If you already use a product, note the formulation and schedule accurately. The aim is a complete account that can be reviewed, not a guess based on a familiar brand or a reassuring word on a label.

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