By Marcus Reid | Last updated: October 16, 2026
If you have been searching “how much CBD per day is too much,” you have probably found numbers that seem to contradict each other: 2 mg, 10 mg, 70 mg, 150 mg, even 1,500 mg. They are all real, but they answer different questions. This guide explains where each number comes from and what it means for you.
If you are looking for how much to take for a specific goal, our CBD dosage guide covers that. This page is about the upper end: where the limits are and why.
CBD Daily Limits by Country
| Where | Daily limit or guidance | What it applies to |
|---|---|---|
| United Kingdom | 10 mg per day for healthy adults | Precautionary advice for CBD in food and food supplements |
| European Union | About 2 mg per day (provisional safe level) | Highly purified CBD as a novel food, for adults over 25 not on medication |
| Australia | Up to 150 mg per day | Low-dose CBD medicines approved for pharmacy sale |
| United States | No official limit | Hemp CBD products are not approved as supplements or foods |
| Prescription CBD (Epidiolex) | Dosed by body weight, up to 20 to 25 mg per kg | Specific seizure disorders, under medical supervision |
The UK Limit: 10 mg a Day
In 2023, the UK Food Standards Agency lowered its advice for healthy adults from 70 mg to 10 mg of CBD a day, which it says is about 4 to 5 drops of a 5% CBD oil. The agency is clear that there is no acute risk above that level, but that longer-term intake above it has been linked to effects on the liver and thyroid in the data it reviewed. It also advises that children, pregnant or breastfeeding women, people trying to conceive, and people on medication who have not spoken to a doctor should not take CBD.
In 2026, the FSA moved toward authorizing its first CBD food products, with labels carrying the same 10 mg daily limit. Many products sold in the UK contain far more than 10 mg per serving, so the advice is to check labels and add up everything you take in a day. Our guide to CBD in the UK covers local products.
The EU Level: About 2 mg a Day
In February 2026, the European Food Safety Authority set a provisional safe intake of 0.0275 mg per kg of body weight per day, which works out to about 2 mg a day for a 70 kg adult. It applies only to highly purified CBD, at least 98% pure, and excludes people under 25, pregnant women and anyone on medication.
The number is low because EFSA applied a large safety margin to cover gaps in the data, especially on reproductive and developmental effects. It is a scientific reference point for approving CBD as a food, not proof that 5 or 10 mg is harmful. It will likely be revised as more data comes in. Our European CBD guide covers what this means country by country.
The US: No Official Limit
The FDA has not set a daily limit for consumer CBD, because it has not approved CBD as a dietary supplement or food ingredient. That leaves the dose up to the product label and you. It also means there is no official safety threshold to rely on, so the UK and EU numbers are useful reference points even for American readers.
One US rule does change soon, though it is about THC, not CBD. From December 11, 2026, hemp products can contain no more than 0.4 mg of total THC per container. See Will CBD Be Illegal in 2026?
What High Doses Look Like: Prescription CBD
The best safety data on high-dose CBD comes from Epidiolex, the FDA-approved CBD medicine for certain seizure disorders. It is dosed by body weight, so a 70 kg adult on the top dose of 20 mg per kg would take about 1,400 mg a day, under medical supervision with blood tests.
Its prescribing information shows how dose matters. Liver enzyme elevations above three times the normal limit were reported in 17% of patients at 20 mg per kg per day, compared with 1% at 10 mg per kg. Most of these happened in patients also taking the seizure drug valproate, and most resolved when the dose was lowered. Other common side effects at these doses include sleepiness, diarrhea and decreased appetite.
The takeaway is not that consumer CBD is dangerous. It is that CBD has a real dose-response for side effects, so there is no benefit in taking far more than you need.
Signs You Are Taking Too Much CBD
- Feeling unusually drowsy or foggy during the day
- Diarrhea or an upset stomach
- Changes in appetite
- Feeling lightheaded, especially if you take blood pressure medication
- Changes in how your other medications work, such as feeling a medication more strongly than usual
If you notice any of these, cut your dose back. If you take prescription medication, especially blood thinners, seizure medications or several drugs processed by the liver, talk to your doctor before taking CBD at all. Our guide to CBD drug interactions lists the main ones.
A Sensible Daily Range
For healthy adults using consumer CBD, a practical approach looks like this:
- Start at 5 to 10 mg a day for the first week.
- Increase by 5 to 10 mg every week or two if needed.
- Most people settle between 10 and 50 mg a day.
- If you live in the UK, the official advice is to stay at or under 10 mg a day.
- Going above 70 mg a day regularly is a conversation to have with a doctor, not something to do on your own.
Taking CBD every day at a moderate dose is common and generally well tolerated. We cover that in can you take CBD every day?
Gummies make it easier to stay within a set dose, because each piece has a fixed amount. In the US, Forest Mountain Farms CBD gummies are broad spectrum with batch lab reports that list the CBD content and show non-detectable THC, so you know exactly how much you are taking.
→ Check Forest Mountain Farms CBD
Frequently Asked Questions
How much CBD per day is too much?
There is no single official answer. The UK advises healthy adults to stay at or under 10 mg a day, and the EU has a provisional safe level of about 2 mg a day for purified CBD. The US has no limit. Side effects such as liver enzyme changes become more common at very high doses, so there is no reason to take more than you need.
What is the maximum CBD dose per day?
For consumer products, official guidance is 10 mg a day in the UK. For prescription CBD, doses go up to 20 to 25 mg per kg of body weight, but only under medical supervision with regular blood tests.
Is 10 mg of CBD a day enough?
For some people, yes, especially for mild stress or as a starting dose. Many adults use 10 to 50 mg a day. If you live in the UK, 10 mg a day is the official upper limit for food and supplement products.
Why is the EU CBD limit only 2 mg?
The European Food Safety Authority applied a large safety margin because important data, especially on reproductive and developmental effects, is still missing. The 2 mg figure is a provisional reference point for approving CBD as a food, not evidence that slightly higher doses are harmful.
Can you overdose on CBD?
CBD is not known to cause a fatal overdose. Taking too much can cause drowsiness, diarrhea and appetite changes, and very high doses over time have been linked to liver enzyme elevations. It can also increase the effects of some medications.
How much CBD per day is too much in the UK?
The Food Standards Agency advises healthy adults not to exceed 10 mg of CBD a day from food and food supplements. It says there is no acute risk above that, but longer-term intake above it has been linked to liver and thyroid effects.
This article is for general information and is not medical advice. CBD can interact with medications, so talk to your doctor before starting it or increasing your dose. This page contains affiliate links; we may earn a commission if you buy through them, at no extra cost to you.
