Order protocol
Sleep & recovery Whole topic
Hormones & energy Whole topic
Metabolism & nutrition Whole topic
Brain & mind Whole topic
Longevity & body Whole topic
Women & family Whole topic
Basics & environment Whole topic
Biohacking & technology Whole topic
Fénix Methode

Tired of generic advice? A protocol built on your numbers.

Order protocol
All articles Every article is based on a chapter of the book NAVRHNUTÝ and peer-reviewed studies.
Biohacker score2 minutes – find out where your body holds you back Results checkNormal vs. optimal for your blood values Biological ageHow old your body is – from 9 blood values CalculatorsBMI, waist, protein, sleep, caffeine, VO2max Daily helperDaily routines, light, sleep and breathing on your phone My stackCheck supplements & medication + daily plan ChallengesSmall daily habits with reminders Fitness testVO2max, fitness age, strength and balance at home Biological twinAll your data in a 3D body What to get testedPrintable list of blood tests Sample protocolSee what you get E-numbers & sugarsWhat is on the label and what to avoid Online advisorAnswers to common questions about body and results SupplementsForms, timing and combination check RecipesMeals without hidden sugars or needless additives GlossaryBiohacking explained from A to Z Gift voucherGive health – the protocol or the book
← All supplements
Sleep & calmWeak evidence

CBD

Also known as: cannabidiol, CBD oil

CBD (cannabidiol) is a non-psychoactive compound from hemp, sold mainly as an oil in various strengths (e.g. 5, 10 or 15%). Prescription CBD has evidence in some rare forms of epilepsy, but for everyday supplements for stress and sleep the evidence is weak.

What it is used for

  • easing tension and stress – weak evidence, small studies
  • sleep quality – weak evidence
  • pain and recovery – weak evidence

Forms and how they differ

5% oil

lower strength, good to start with

10–15% oil

higher amount per drop – dose carefully

full-spectrum

also contains other cannabinoids and traces of THC

isolate

CBD only, no THC

When to take it

In the evening or as the label says; hold the oil under the tongue before swallowing.

Pairs well with

A meal with fat improves absorption; good sleep hygiene.

Do not combine / separate

Do not combine with alcohol, sedatives or sleeping medicines. Take care when driving after use.

Watch out for

Not suitable in pregnancy or breastfeeding. CBD affects liver enzymes that break down many medicines (e.g. anticoagulants, antiepileptics, antidepressants) – if you take any medicines or have liver disease, consult your doctor. Full-spectrum products may cause a positive drug test.

Safety

EFSA has not yet confirmed the safety of CBD as a food; at higher doses it may strain the liver. Do not exceed the label dose.

Practical tip

Choose products with a batch-specific lab certificate (CBD and THC content).

Products containing CBD 3

CBD hemp extract oil 10 %hemp extract oil · 10 % / servingStressSleepMoodRecovery
CBD hemp extract oil 15 %hemp extract oil · 15 % / servingStressSleepMoodRecovery
CBD hemp extract oil 5 %hemp extract oil · 5 % / servingStressSleepMoodRecovery
How to read the evidence rating
Strong evidenceModerate evidenceWeak evidenceNo evidence

Strong = several good human studies or official recommendations; moderate = promising but smaller studies; weak = few studies or mixed results; no evidence = claims not confirmed.

Combination check

Select the supplements you take and, if relevant, your medicines. We show what interferes, what needs a time gap and what to watch out for.

Check CBD with others

Which supplements do you actually need?

Fénix Methode picks them from your blood results and schedules when to take what – no needless purchases.

Learn about Fénix Methode

From the same group

5-HTPWeak evidenceApigeninWeak evidenceChamomileWeak evidenceGABAWeak evidenceL-theanineWeak evidenceLavenderModerate evidence
Important notice

This information is educational and does not replace advice from a doctor or pharmacist. We do not give medicine dosages. Supplements are no substitute for a varied diet; if pregnant, breastfeeding, ill or on medication, consult a doctor first.