Hemp oil

fatcastor oil

What is it

Hemp oil typically refers to oil cold-pressed from the seeds of Cannabis sativa (the hemp plant). It is distinct from CBD oil or hemp extract oil, which are concentrated cannabinoid extracts from the flower and leaves. Hemp seed oil is rich in essential fatty acids in a near-ideal 3:1 ratio of omega-6 to omega-3 fatty acids, along with gamma-linolenic acid (GLA), tocopherols, and protein traces.

How it works

Hemp seed oil's primary benefits derive from its balanced essential fatty acid profile. It provides linoleic acid (omega-6), alpha-linolenic acid (omega-3), and small amounts of gamma-linolenic acid (GLA) and stearidonic acid. This balance is closer to what is generally considered optimal for human nutrition than most vegetable oils. Hemp seed oil contains essentially no THC or CBD; it is purely a nutritional oil. (Confusion arises because 'hemp oil' is sometimes used loosely to refer to CBD-containing products, which have very different effects.) The oil also provides tocopherols (vitamin E), small amounts of phytosterols, and trace minerals. Its effects on health are similar to other balanced essential fatty acid sources.

Evidence for 5 uses

AI-assisted evidence assessment — talk to your doctor before relying on any single supplement.

Essential fatty acid intake

Grade B

Good evidence

Hemp seed oil provides a balanced ratio of omega-6 to omega-3 fatty acids and contributes to overall essential fatty acid status. Studies show modest improvements in fatty acid profile with regular consumption.

Skin conditions (eczema, dry skin)

Grade C

Moderate evidence

Some small studies have shown improvements in atopic dermatitis symptoms and skin barrier function with hemp seed oil supplementation. Effects may be due to fatty acid composition.

Cardiovascular markers

Grade C

Moderate evidence

Limited studies have shown modest improvements in blood pressure and lipid profiles with hemp seed oil. Effects are small.

PMS symptoms

Grade D

Mixed evidence

Because of its GLA content, hemp seed oil has been suggested for PMS. Evidence specifically for hemp seed oil is limited; better-studied alternatives include evening primrose oil and borage oil.

Inflammation

Grade D

Mixed evidence

Theoretical anti-inflammatory effects through balanced fatty acid intake. Clinical evidence for inflammation reduction specifically with hemp seed oil is limited.

4 commercial forms

Cold-pressed hemp seed oil (culinary)

Full fatty acid and tocopherol profile

The standard hemp seed oil; greenish color, nutty flavor. Use for salads and drizzles.

Hemp seed oil softgels

Standardized doses, protected from oxidation

More stable than bottled oil for supplemental use.

Hemp protein powder (different product)

Protein-focused, less oil content

Made from defatted hemp seeds; primarily for protein, not fatty acids.

CBD oil / hemp extract oil (different product)

Contains cannabinoids, different pharmacology

Not the same as hemp seed oil. Made from flowers/leaves and contains CBD. Has distinct uses, dosing, and regulatory status.

Dosage

There is no formal recommended intake. Typical use is 1-2 tablespoons (15-30 mL) per day as a culinary or nutritional supplement. Softgels typically deliver 1-3 g per serving. The oil should not be cooked at high temperatures.

When and how to take it

Take with meals to enhance absorption and reduce gastrointestinal upset. Use cold (do not heat for cooking). Store opened bottles in the refrigerator and use within 8-12 weeks to prevent rancidity. Softgels are more stable than bottled oil.

Food sources

Food	Amount	%DV
Hemp seeds (hearts)	30 g provides ~3 g of hemp oil's fatty acids	—
Hemp seed oil	1 tablespoon (~14 g)	—
Hemp protein powder	smaller amounts of hemp oil per serving	—

Safety

Generally well tolerated. Possible side effects include mild gastrointestinal upset and diarrhea, particularly with high doses. Some users may notice a mild laxative effect. Hemp seed oil is highly unstable and oxidizes easily; rancid oil can cause stomach upset. Allergic reactions are uncommon but possible.

Who should be cautious

Pregnant and breastfeeding women can use culinary amounts. People taking anticoagulants should monitor for any unusual bleeding. People with cannabis allergies should avoid hemp products. Be aware of product labeling: 'hemp oil' may mean either hemp seed oil (nutritional) or hemp extract oil (containing cannabinoids); these are not equivalent.

Interactions

Hemp seed oil has few documented drug interactions. The fatty acids may have mild antiplatelet effects, so caution with anticoagulants is reasonable but rarely problematic. Theoretical interactions with antihypertensive medications (mild blood pressure effects). Drug interactions are more relevant for CBD-containing hemp extract oils, which are different products.

Frequently asked questions

Is hemp oil the same as CBD oil?⌄

No, but the terminology is confusing. Hemp seed oil (from seeds) is a nutritional oil with no cannabinoids. CBD oil or hemp extract oil (from flowers/leaves) contains cannabinoids and has different uses and effects.

Will hemp oil get me high?⌄

No. Hemp seed oil contains essentially no THC or CBD. It will not produce psychoactive effects or impair driving.

Can I cook with hemp oil?⌄

Hemp seed oil has a low smoke point and oxidizes when heated. Use only cold or at very low temperatures (salads, drizzles, smoothies).

Is hemp oil a good omega-3 source?⌄

It provides some omega-3 (ALA), but flaxseed oil, chia, and fish oil are more concentrated sources. Hemp's strength is its balanced omega-6 to omega-3 ratio.

Will hemp oil show up on a drug test?⌄

Pure hemp seed oil should not. However, trace contamination is possible, especially with low-quality products. Frequent and high-volume consumers should be aware.

References

Hemp oil (Wikidata) — Wikidata link

Track Hemp oil with Pilora

Set up dose reminders, check interactions, and join the community in the Pilora iPhone app.

Coming to App Store

Disclaimer: These statements have not been evaluated by the FDA. This page is educational, not a substitute for personalized medical advice. Evidence grades are AI-assisted assessments — talk to your doctor before starting any new supplement, especially if you're pregnant, breastfeeding, on medications, or managing a chronic condition.