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Seven Seas Evening Primrose Oil Plus Starflower Oil 1000mg - 30 Capsules

Seven Seas Evening Primrose Oil Plus Starflower Oil 1000mg - 30 Capsules

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  • 5. Supports cardiovascular risk reduction
  • 6. Over 22 million patients treated with semaglutide-based therapies since 2018

  • ✔️ Provides GLA from two natural plant oil sources
  • ✔️ Supports skin hydration and barrier function daily
  • ✔️ Dual-source formula: evening primrose plus starflower oil
  • ✔️ Convenient 30-capsule one-month supply pack
  • ✔️ Suitable for adults seeking omega-6 fatty acid support

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What Are Seven Seas Evening Primrose Oil Plus Starflower Oil 1000mg Capsules?

 

If you've been looking for a convenient way to top up your intake of essential fatty acids, evening primrose oil capsules are one of the most widely used options in the UK. Seven Seas Evening Primrose Oil Plus Starflower Oil 1000mg combines two natural plant-based oils — evening primrose and starflower (also known as borage) — into a single daily supplement. Each pack contains 30 capsules, making it a practical one-month supply for most adults. You can browse a wider range of similar products in our vitamins and supplements collection.

Evening primrose oil is extracted from the seeds of the Oenothera biennis plant and has been used as a dietary supplement for decades. Starflower oil, derived from Borago officinalis, is included here because it naturally contains a higher concentration of gamma-linolenic acid (GLA) than evening primrose oil alone. Together, they provide a meaningful daily dose of this omega-6 fatty acid, which the body cannot produce in sufficient quantities on its own.

 

How Do These Capsules Work in the Body?

 

GLA is an omega-6 polyunsaturated fatty acid. Once consumed, the body converts it into dihomo-gamma-linolenic acid (DGLA) and then into prostaglandins — hormone-like compounds that play a role in regulating inflammation, skin barrier function, and various other physiological processes. The key steps are:

  • GLA is absorbed from the capsule in the digestive tract
  • It is converted to DGLA in body tissues
  • DGLA is used to produce series-1 prostaglandins, which have anti-inflammatory properties
  • These prostaglandins support skin hydration, hormonal regulation, and immune function

Some people have a reduced ability to convert the precursor fatty acid linoleic acid into GLA — this can happen with age, stress, or certain dietary patterns. Supplementing directly with GLA-rich oils like evening primrose and starflower bypasses this conversion step entirely.

 

Who Is This Supplement Suitable For?

 

This product is designed for adults who want to support their general wellbeing through essential fatty acid supplementation. It's particularly popular among women looking to support hormonal balance and skin health. That said, it's worth knowing who it's most appropriate for:

  • Adults aged 18 and over seeking a GLA supplement
  • Women experiencing cyclical changes in skin condition or mood
  • People with dry or sensitive skin looking for nutritional support
  • Those whose diet may be low in omega-6 fatty acids

It is not suitable for children, and women who are pregnant or breastfeeding should speak to their GP or midwife before taking it. If you're managing a skin condition and looking for topical support alongside this supplement, our skin care collection may also be helpful.

 

How Does This Product Compare to Plain Evening Primrose Oil?

 

Feature Seven Seas EPO Plus Starflower Oil 1000mg Plain Evening Primrose Oil 1000mg
Oil sources Evening primrose + starflower (borage) Evening primrose only
GLA content per capsule Higher (dual-source GLA) Lower (single source)
Pack size 30 capsules Varies (30–90 capsules)
Suitable for vegetarians No (gelatin capsule shell) Depends on brand

 

How Should You Store These Capsules?

 

Store your evening primrose oil capsules below 25°C in a cool, dry place away from direct sunlight. Keep the container tightly closed and out of reach of children. Do not use after the expiry date printed on the pack. Fatty acid supplements can oxidise if exposed to heat or light, which may affect their quality over time.

This product is a food supplement, not a medicine. However, speak to your doctor or pharmacist before using if you have an underlying medical condition or are taking other medicines.

Seven Seas Evening Primrose Oil Plus Starflower Oil 1000mg - 30 Capsules specifications
Treatment category Food supplement / Essential fatty acids
Mechanism of action Provides GLA (gamma-linolenic acid), an omega-6 fatty acid supporting prostaglandin synthesis
Effective for Supporting skin health, hormonal balance, and general wellbeing
Suitable for Adults aged 18 and over
Active ingredient Evening Primrose Oil, Starflower Oil (Borage Oil), GLA
Pack size 30 capsules
Strength 1000mg (combined oil per capsule)
UK classification Food supplement (not a licensed medicine)
Drug class Omega-6 essential fatty acid supplement
Preparation Soft gelatin capsule
Route of administration Oral

Specifications of Seven Seas Evening Primrose Oil Plus Starflower Oil 1000mg - 30 Capsules

 

What Is Seven Seas Evening Primrose Oil Plus Starflower Oil and What Is It Used For?

 

Seven Seas Evening Primrose Oil Plus Starflower Oil 1000mg is a food supplement providing gamma-linolenic acid (GLA) from two natural plant oil sources. It is taken orally to help maintain an adequate intake of omega-6 essential fatty acids, which contribute to normal skin function and general health maintenance. Many people use it to support skin hydration, hormonal wellbeing, and overall nutritional balance — particularly when dietary intake of these fatty acids may be insufficient.

 

What Do You Need to Know Before Using These Capsules?

 

Before starting any new supplement, it's important to check whether it's right for you. Do not take this product if any of the following apply:

  • You are allergic to evening primrose oil, starflower (borage) oil, or any other ingredient in the capsule
  • You have epilepsy or a history of seizures — GLA-containing oils may lower the seizure threshold in some individuals
  • You are pregnant — consult your GP or midwife before use
  • You are under 18 years of age

You should also be aware of the following potential interactions with other medicines:

  • Anticoagulants (e.g. warfarin): Evening primrose oil may have mild antiplatelet effects; use with caution and inform your prescriber
  • Antiplatelet drugs (e.g. aspirin, clopidogrel): Combined use may increase bleeding risk
  • Phenothiazines (antipsychotic medicines): Some evidence suggests GLA-containing oils may interact with this drug class in people with epilepsy

If you are taking any prescription medicines or have a long-term health condition, speak to your pharmacist or GP before starting this supplement. You can also explore our women's health range for other products that may complement your routine.

 

How Should You Use Seven Seas Evening Primrose Oil Plus Starflower Oil?

 

Using this supplement correctly helps ensure you get the most from it. Follow these steps:

  1. Check the expiry date on the pack before opening
  2. Take two capsules daily with a full glass of water
  3. Swallow the capsules whole — do not chew or crush them
  4. Take with a meal to aid absorption and reduce the chance of stomach upset
  5. Continue daily use consistently for best results — fatty acid supplements typically require several weeks of regular use
Indication Age Group Dose Frequency
General GLA supplementation Adults 18+ 2 capsules (2000mg total oil) Once daily with food
Children Under 18 Not recommended

 

What Are the Possible Side Effects of These Capsules?

 

Evening primrose oil and starflower oil are generally well tolerated when taken as directed. Side effects are uncommon, but it's useful to know what to look out for.

Common side effects (may affect a small number of users):

  • Nausea, particularly if taken on an empty stomach
  • Loose stools or mild diarrhoea
  • Mild stomach discomfort or bloating

Less common side effects:

  • Headache
  • Skin rash or allergic reaction (stop use immediately if this occurs)
  • In people with epilepsy, a theoretical risk of lowering seizure threshold

If you experience any severe or persistent side effects, stop taking the capsules and seek advice from your pharmacist or GP. Allergic reactions — such as swelling of the face, lips, or throat — require immediate medical attention.

 

How Should You Store Seven Seas Evening Primrose Oil Plus Starflower Oil?

 

Correct storage helps preserve the quality of the oils inside each capsule. Follow these guidelines:

  • Store below 25°C in a cool, dry place
  • Keep away from direct sunlight and sources of heat
  • Keep the container tightly closed after each use
  • Store out of sight and reach of children
  • Do not use after the expiry date printed on the pack
  • Do not freeze

If you're looking to support your health from multiple angles, our hair care collection includes products that complement a fatty acid supplement routine for those concerned about hair condition alongside skin health.

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Your safety and success are our highest priorities. Our medical team rigorously evaluates every product and piece of advice we provide, ensuring you receive only the most effective, science-backed solutions available.

Frequently Asked Questions

Where can I buy Seven Seas Evening Primrose Oil Plus Starflower Oil 1000mg online in the UK?

You can order Seven Seas Evening Primrose Oil Plus Starflower Oil 1000mg directly from Cured Pharmacy, a GPhC-registered UK online pharmacy. It is available without a prescription as an over-the-counter food supplement. You can also browse our full vitamins and supplements collection for related products.

How do evening primrose oil capsules work in the body?

Evening primrose oil capsules provide gamma-linolenic acid (GLA), an omega-6 fatty acid that the body converts into prostaglandins — compounds involved in regulating inflammation and skin barrier function. Starflower oil is included because it contains a higher concentration of GLA than evening primrose oil alone, making the combined formula a more efficient source. Together, they help ensure your body has adequate GLA for normal physiological processes.

How do I take Seven Seas Evening Primrose Oil Plus Starflower Oil step by step?

Take two capsules daily with a full glass of water, ideally with a meal to support absorption and reduce the chance of stomach discomfort. Swallow the capsules whole — do not chew or crush them. Continue taking them consistently each day, as fatty acid supplements generally require several weeks of regular use before results become noticeable.

What is the best time of day to take evening primrose oil capsules?

There is no strict rule, but taking your capsules with a main meal — such as breakfast or dinner — tends to improve the absorption of fat-soluble compounds and reduces the likelihood of nausea. Consistency matters more than timing, so choose a time that fits easily into your daily routine. Taking them at the same time each day helps you remember your dose.

What are the side effects of Seven Seas Evening Primrose Oil Plus Starflower Oil?

Most people tolerate this supplement well, but some may experience mild digestive effects such as nausea, loose stools, or bloating — especially if taken on an empty stomach. Less commonly, headache or a skin reaction may occur. If you notice any severe or persistent symptoms, stop taking the capsules and speak to your pharmacist or GP.

Who should not take evening primrose oil and starflower oil capsules?

This supplement is not recommended for people with epilepsy, those taking anticoagulant medicines such as warfarin, or women who are pregnant, without first seeking medical advice. It is also not suitable for children under 18. Always read the full product label and consult your pharmacist if you are unsure whether this supplement is right for you.

How long does it take for evening primrose oil to show results?

Results vary between individuals, and there is no guaranteed timeframe. Many people report noticing changes in skin condition or general wellbeing after 4 to 12 weeks of consistent daily use. Fatty acid supplements work gradually by building up in body tissues, so patience and regularity are key to seeing any benefit.

What is the difference between evening primrose oil and starflower oil?

Both oils are plant-based sources of GLA, but starflower oil (derived from borage seeds) typically contains a higher percentage of GLA per gram than evening primrose oil. Evening primrose oil has a longer history of use as a supplement and is more widely studied. Combining both in one capsule, as Seven Seas does here, provides GLA from two complementary natural sources.

Can I take evening primrose oil capsules if I am on warfarin?

You should not take evening primrose oil or starflower oil alongside warfarin without first speaking to your GP or anticoagulation clinic. These oils may have mild antiplatelet effects that could interact with warfarin and affect your INR (blood clotting level). Your prescriber can advise whether it is safe for you to use this supplement alongside your anticoagulant therapy.

Is Seven Seas Evening Primrose Oil Plus Starflower Oil suitable for vegetarians or vegans?

No — the capsule shell is made from gelatin, which is derived from animal sources, so this product is not suitable for vegetarians or vegans. If you follow a plant-based diet and are looking for GLA supplementation, you would need to seek out a product with a vegetable-based capsule shell. Check the product label carefully before purchasing.

What happens if I miss a dose of Seven Seas Evening Primrose Oil?

If you forget to take your capsules on a given day, simply continue with your normal dose the following day — do not double up to compensate for a missed dose. Missing an occasional dose is unlikely to have any significant effect, as fatty acid supplements work by gradually accumulating in body tissues over time. Consistency over weeks and months matters more than any single day.

How long can you take evening primrose oil capsules for?

This supplement can generally be taken long-term as part of a balanced diet, provided you are not in a contraindicated group. There is no standard maximum duration specified for healthy adults. If you have been taking it for several months without noticing any benefit, it is worth discussing with your pharmacist whether continued use is appropriate for your individual needs.

What are the alternatives to Seven Seas Evening Primrose Oil Plus Starflower Oil?

Alternatives include plain evening primrose oil capsules (without starflower oil), standalone starflower (borage) oil supplements, or other omega-6 fatty acid sources such as hemp seed oil. The choice depends on your GLA intake goals and personal preferences. You can explore a range of options in our vitamins and supplements collection to find what suits you best.

Can evening primrose oil capsules help with skin conditions?

GLA from evening primrose oil is thought to support skin barrier function and hydration, and some people use it as a nutritional support measure alongside treatments for dry or sensitive skin. However, it is a food supplement and not a licensed medicine for any skin condition. If you have a diagnosed skin condition, speak to your GP or dermatologist about appropriate treatment options, and consider browsing our skin care collection for topical support products.

What does the latest research say about evening primrose oil supplements?

Research into evening primrose oil is ongoing, and evidence for specific health claims remains mixed. Some studies suggest potential benefits for skin hydration and cyclical breast discomfort, but the NHS notes that evidence for many traditional uses of evening primrose oil is not conclusive. It is best used as a nutritional supplement to support general wellbeing rather than as a treatment for a specific medical condition.

How Should You Use Seven Seas Evening Primrose Oil Plus Starflower Oil 1000mg?

Using this supplement correctly is straightforward, but a few simple steps will help you get the most from it. Always read the label before starting and check that the product is suitable for you.

There is no need to split the dose across the day — taking both capsules together once daily is the intended method of use. If you find the capsules cause any stomach discomfort, try taking them with a larger meal.

What Is the Correct Dose of Seven Seas Evening Primrose Oil Plus Starflower Oil 1000mg?

The recommended dose for adults is two capsules per day, providing a combined 2000mg of evening primrose and starflower oil. Do not exceed this amount unless advised to do so by a healthcare professional.

When Is the Best Time to Use Seven Seas Evening Primrose Oil Plus Starflower Oil 1000mg?

There is no clinically mandated time of day for taking this supplement, but taking it with a meal that contains some dietary fat may help improve the absorption of the oil-soluble fatty acids. Many people find that incorporating it into their morning or evening meal routine makes it easier to remember. Consistency over time is what matters most with fatty acid supplements.

How Long Can You Use Seven Seas Evening Primrose Oil Plus Starflower Oil 1000mg For?

This supplement can be taken as part of a long-term daily routine for healthy adults who are not in a contraindicated group. There is no specified maximum duration for use in otherwise healthy individuals. If you have been taking it consistently for three months without noticing any benefit, it is worth discussing with your pharmacist whether continued use is appropriate for your circumstances.

Do not exceed the recommended dose. If in doubt, speak to your pharmacist.

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What Are the Most Common Side Effects of Seven Seas Evening Primrose Oil Plus Starflower Oil?

This supplement is generally well tolerated by most adults when taken as directed. The most frequently reported side effects are mild and digestive in nature, often occurring when the capsules are taken on an empty stomach.

  • Nausea or feeling sick
  • Loose stools or mild diarrhoea
  • Bloating or abdominal discomfort
  • Indigestion or a feeling of fullness

Taking the capsules with food usually reduces the likelihood of these effects. If they persist beyond the first few days of use, stop taking the supplement and speak to your pharmacist.

What Are the Less Common Side Effects of Seven Seas Evening Primrose Oil Plus Starflower Oil?

Less commonly, some people may experience the following effects. These are not typical but are worth being aware of before you start.

  • Headache
  • Skin rash or itching
  • Mild allergic reaction (e.g. skin redness or hives)

If you develop a skin rash or any signs of an allergic reaction, stop taking the capsules immediately and seek advice from your pharmacist or GP. Do not restart the supplement without professional guidance.

What Are the Serious Side Effects of Seven Seas Evening Primrose Oil Plus Starflower Oil?

Serious side effects are rare with this type of supplement. However, there are specific groups for whom the risk is higher. People with epilepsy should be aware that GLA-containing oils have been associated with a theoretical risk of lowering the seizure threshold, particularly when taken alongside certain antipsychotic medicines (phenothiazines). If you have epilepsy, do not take this supplement without first consulting your neurologist or GP.

A severe allergic reaction (anaphylaxis) is extremely rare but possible. Symptoms include swelling of the face, lips, tongue, or throat, difficulty breathing, or a sudden drop in blood pressure. This is a medical emergency — call 999 immediately if you experience these symptoms.

What Should You Do If You Experience Side Effects?

For mild digestive side effects, try taking the capsules with a larger meal and ensure you are drinking enough water. If symptoms do not improve within a few days, stop use and consult your pharmacist. For any skin reactions, stop immediately and seek advice. For serious reactions, seek emergency medical help without delay. You should also report suspected side effects to the MHRA via the Yellow Card scheme at yellowcard.mhra.gov.uk.

Can Seven Seas Evening Primrose Oil Plus Starflower Oil Interact With Other Medicines?

Yes — this supplement can interact with certain medicines. The most clinically significant interactions include anticoagulants such as warfarin, antiplatelet drugs such as aspirin or clopidogrel, and phenothiazine-based antipsychotics. Evening primrose oil and starflower oil may have mild blood-thinning effects, which could amplify the action of these medicines and increase bleeding risk. Always inform your GP or pharmacist of all supplements you are taking, particularly if you are on any prescribed medicines.

If you are concerned about any side effects, contact your pharmacist or GP immediately.

Patient Information Leaflet

Important - Before taking any medication, it is always important to read the Patient Information Leaflet (PIL)

Written and reviewed by our qualified team

GPhC Number: 2233073
Tarun Kumar

Reviewed by:

Tarun Kumar

Superintendent/ Clinical Lead

📖 Find out more about our team of medical content authors and how we ensure the accuracy of our content with our content guidelines.

Content last updated: 31 Mar 2025

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