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Efamol Pure Evening Primrose Oil 500mg

Efamol Pure Evening Primrose Oil 500mg

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  • ✔️ Provides GLA to support skin moisture and barrier function
  • ✔️ Helps manage PMS symptoms including breast tenderness
  • ✔️ Supports essential fatty acid intake where diet falls short
  • ✔️ Suitable for adults seeking daily omega-6 supplementation
  • ✔️ Each 500mg capsule delivers a consistent dose of evening primrose oil

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What Is Evening Primrose Oil 500mg and How Can It Help You?

 

If you have been searching for a natural way to support your skin, hormonal health, or general wellbeing, evening primrose oil 500mg is one of the most widely used essential fatty acid supplements available in the UK. Efamol Pure Evening Primrose Oil 500mg provides a concentrated source of gamma-linolenic acid (GLA), an omega-6 fatty acid that many people do not get enough of through diet alone. Each capsule is carefully produced to deliver a consistent dose of this important nutrient, making it straightforward to incorporate into your daily routine. You can explore the full range of similar products in our vitamins and supplements collection.

Evening primrose oil has been used for decades in the UK as a food supplement. It is derived from the seeds of the Oenothera biennis plant and is particularly valued for its GLA content. GLA is a type of fatty acid that the body uses to produce prostaglandins — hormone-like substances involved in regulating inflammation and a range of physiological processes. Unlike some supplements, evening primrose oil has a well-established history of use and a broad base of consumer trust.

 

How Does Efamol Pure Evening Primrose Oil Work?

 

The key to how this supplement works lies in its fatty acid profile. Here is a simple breakdown of the mechanism:

  • Each 500mg capsule provides gamma-linolenic acid (GLA), typically around 40mg per capsule in Efamol's formulation.
  • GLA is converted in the body to dihomo-gamma-linolenic acid (DGLA), a precursor to series-1 prostaglandins.
  • These prostaglandins have anti-inflammatory properties and play a role in maintaining the skin's moisture barrier.
  • GLA also supports the production of structural lipids that keep skin supple and help regulate the menstrual cycle's hormonal fluctuations.

Some people have a reduced ability to convert linoleic acid (found in many vegetable oils) into GLA — this can be influenced by age, diet, stress, and certain health conditions. Supplementing directly with GLA bypasses this conversion step, which is why many people find evening primrose oil supplements more effective than simply increasing their intake of other omega-6 oils.

 

Who Should Consider Using Efamol Pure Evening Primrose Oil 500mg?

 

This supplement is suitable for a wide range of adults. It is particularly popular among those looking to support their skin from within, as well as women managing symptoms linked to their menstrual cycle. That said, it is not a medicine and should not be used as a replacement for prescribed treatment.

  • Adults with dry, sensitive, or eczema-prone skin looking for nutritional support.
  • Women experiencing premenstrual syndrome (PMS) symptoms such as breast tenderness or mood changes.
  • Those with a diet low in essential fatty acids who want to supplement their GLA intake.
  • Adults interested in supporting general skin health alongside a balanced diet.

If you are managing a skin condition and looking for topical support alongside your supplement routine, our skin care collection has a range of relevant products worth exploring.

 

How Does Efamol Pure Evening Primrose Oil Compare to Other GLA Supplements?

 

Feature Efamol Pure Evening Primrose Oil 500mg Starflower (Borage) Oil 500mg
GLA content per 500mg Approx. 40mg GLA Approx. 100mg GLA
Source Oenothera biennis (evening primrose) seed Borago officinalis (borage) seed
Established safety record Extensive — decades of UK use Shorter history; some safety concerns in pregnancy
Typical use Skin health, PMS, general EFA support Higher-dose GLA supplementation

 

Is Efamol Pure Evening Primrose Oil 500mg Suitable for Long-Term Use?

 

For most healthy adults, taking evening primrose oil 500mg daily over an extended period is considered safe. However, if you have epilepsy, a bleeding disorder, or are taking anticoagulant medicines such as warfarin, you should speak to your GP or pharmacist before starting this supplement. The same applies if you are pregnant or breastfeeding — always seek professional advice first.

Store capsules in a cool, dry place below 25°C, away from direct sunlight. Keep the container tightly closed and out of reach of children. Do not use beyond the printed expiry date.

This product is a food supplement. Speak to your doctor or pharmacist before using if you have an underlying medical condition or are taking other medicines.

Efamol Pure Evening Primrose Oil 500mg specifications
Treatment category Food supplement / Essential fatty acid
Mechanism of action Provides GLA, which is converted to anti-inflammatory prostaglandins
Effective for Supporting skin health, PMS symptom management, EFA supplementation
Suitable for Adults aged 18 and over
Active ingredient Evening primrose oil (providing gamma-linolenic acid, GLA)
Strengths 500mg per capsule
UK classification Food supplement (not a licensed medicine)
Preparation Soft gel capsule
Route of administration Oral

Specifications of Efamol Pure Evening Primrose Oil 500mg

 

What Is Efamol Pure Evening Primrose Oil 500mg and What Is It Used For?

 

Efamol Pure Evening Primrose Oil 500mg is a food supplement containing oil extracted from the seeds of the evening primrose plant. It is used to supplement the diet with gamma-linolenic acid (GLA), an omega-6 essential fatty acid. People commonly take it to support skin health — particularly dry or sensitive skin — and to help manage symptoms associated with premenstrual syndrome (PMS), such as breast tenderness and mood changes. It is not a licensed medicine and does not treat, cure, or prevent any medical condition.

Evening primrose oil is one of the most widely taken supplements in the UK. Its popularity stems from its role in supporting the body's natural production of prostaglandins, which are involved in inflammation regulation and hormonal signalling. If you are also interested in products that support women's health more broadly, our women's health collection includes a range of relevant options.

 

What Do You Need to Know Before Using Efamol Pure Evening Primrose Oil 500mg?

 

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

  • You are allergic to evening primrose oil or any of the capsule ingredients.
  • You have epilepsy or a history of seizures — GLA may lower the seizure threshold in some individuals.
  • You are pregnant or planning to become pregnant — seek medical advice before use.
  • You are breastfeeding — consult your GP or midwife first.
  • You are under 18 years of age.

The following medicines may interact with evening primrose oil. Always tell your pharmacist or GP about all medicines and supplements you are taking:

  • Warfarin and other anticoagulants — evening primrose oil may have mild antiplatelet effects.
  • Antiplatelet drugs such as aspirin or clopidogrel — combined use may increase bleeding risk.
  • Phenothiazine antipsychotics — there is a theoretical risk of lowering the seizure threshold.
  • Anaesthetic agents — inform your anaesthetist if you take this supplement before surgery.

 

How Should You Use Efamol Pure Evening Primrose Oil 500mg?

 

Always follow the directions on the product label. The steps below reflect standard guidance for adults:

  1. Check the label and expiry date before opening.
  2. Take the capsules whole with a full glass of water.
  3. Take with food to improve absorption and reduce the chance of stomach upset.
  4. Do not chew or crush the capsules.
  5. Take at the same time each day to help build a consistent routine.
Indication Age Group Dose Frequency
General EFA supplementation Adults 18+ 2 capsules (1,000mg) Once daily with food
Skin health support Adults 18+ 2–4 capsules (1,000–2,000mg) Daily, split with meals
PMS symptom support Adults 18+ Up to 4 capsules (2,000mg) Daily, as directed by a healthcare professional
Children under 18 Under 18 Not recommended

 

What Are the Possible Side Effects of Efamol Pure Evening Primrose Oil 500mg?

 

Most people tolerate evening primrose oil well, especially when taken with food. Side effects are generally mild and tend to settle as your body adjusts. If you experience anything that concerns you, stop taking the supplement and speak to your pharmacist or GP.

Common side effects (may affect some users):

  • Nausea or stomach discomfort, particularly on an empty stomach
  • Loose stools or mild diarrhoea
  • Headache
  • Bloating or indigestion

Less common side effects (rare but reported):

  • Allergic skin reactions such as rash or itching
  • Increased bleeding time (relevant if taking blood-thinning medicines)
  • In people with epilepsy, a theoretical risk of lowering the seizure threshold

Stop use and seek medical attention immediately if you experience signs of a serious allergic reaction, including swelling of the face, lips, or throat, difficulty breathing, or severe skin reactions.

 

How Should You Store Efamol Pure Evening Primrose Oil 500mg?

 

Correct storage helps maintain the quality and potency of the oil 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 packaging.
  • Do not store in the bathroom or near a sink — moisture can degrade the capsules.

If you are looking for additional support for hair health alongside your supplement routine, our hair care collection includes products that complement an essential fatty acid supplement programme.

Written and reviewed by our qualified team

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 Efamol Pure Evening Primrose Oil 500mg online in the UK?

You can buy Efamol Pure Evening Primrose Oil 500mg directly from Cured Pharmacy, a GPhC-registered UK online pharmacy, for just £8.99. It is available without a prescription as an over-the-counter food supplement. Browse our full vitamins and supplements collection for related products.

How does evening primrose oil 500mg work in the body?

Evening primrose oil provides gamma-linolenic acid (GLA), an omega-6 fatty acid that the body converts into anti-inflammatory prostaglandins. These compounds help regulate inflammation, support the skin's moisture barrier, and contribute to hormonal balance. The process bypasses a conversion step that many people struggle with due to age, diet, or stress.

How do I take Efamol Pure Evening Primrose Oil 500mg step by step?

Take the capsules whole with a full glass of water — do not chew or crush them. The standard adult dose is two to four 500mg capsules daily, ideally taken with food to aid absorption. Try to take them at the same time each day to build a consistent habit.

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

There is no single "best" time, but taking evening primrose oil with meals — particularly breakfast and dinner — tends to improve absorption and reduce the chance of stomach discomfort. Splitting the daily dose between two meals is a practical approach for those taking more than two capsules per day. Consistency matters more than the specific time of day.

What are the side effects of Efamol Pure Evening Primrose Oil 500mg?

Most people tolerate this supplement well. The most commonly reported side effects include mild nausea, headache, loose stools, and bloating — these usually settle once your body adjusts. Rarely, some people may experience skin reactions or, in those with epilepsy, a theoretical lowering of the seizure threshold.

How do I manage side effects of evening primrose oil?

Taking capsules with food is the most effective way to reduce digestive side effects such as nausea or loose stools. If symptoms persist after a week or two, reduce your dose and speak to your pharmacist. Stop use immediately and seek medical advice if you experience any signs of an allergic reaction.

Who is Efamol Pure Evening Primrose Oil 500mg suitable for?

This supplement is suitable for adults aged 18 and over who want to support their skin health, manage PMS-related symptoms, or increase their intake of essential fatty acids. It is not recommended for children, pregnant women (without medical advice), or people with epilepsy or bleeding disorders. Always check with your pharmacist if you are unsure.

Can I take evening primrose oil if I am pregnant or breastfeeding?

You should not take evening primrose oil during pregnancy without first speaking to your GP or midwife, as its safety in pregnancy has not been fully established. If you are breastfeeding, seek professional advice before starting supplementation. The NHS advises caution with supplements during pregnancy unless specifically recommended by a healthcare professional.

What happens if I miss a dose of Efamol Pure Evening Primrose Oil?

If you miss a dose, simply take it as soon as you remember — unless it is nearly time for your next scheduled dose, in which case skip the missed one. Never take a double dose to make up for a missed capsule. Missing an occasional dose is unlikely to affect the overall benefit of the supplement.

How long should I take evening primrose oil for?

Many people take evening primrose oil as a long-term daily supplement without issue. If you are using it for a specific purpose such as PMS support, it may take six to twelve weeks of consistent use before you notice a meaningful difference. Speak to your GP or pharmacist if you are considering taking it for longer than three months for a specific health concern.

Does evening primrose oil help with skin conditions like eczema?

Evening primrose oil has historically been used to support skin health, particularly in people with dry or eczema-prone skin, due to its GLA content. However, it is classified as a food supplement rather than a licensed medicine, and the NHS notes that evidence for its effectiveness in treating eczema is mixed. If you have a diagnosed skin condition, speak to your GP about appropriate treatment options alongside any supplement use.

Can evening primrose oil interact with other medicines?

Yes — evening primrose oil may interact with anticoagulant medicines such as warfarin, antiplatelet drugs like aspirin or clopidogrel, and certain antipsychotic medicines. If you take any prescribed medicines, always tell your pharmacist before starting this supplement. You can also explore our women's health collection for other products relevant to your needs.

What are the alternatives to Efamol Pure Evening Primrose Oil 500mg?

Alternatives that also provide GLA include starflower (borage) oil, which contains a higher concentration of GLA per capsule, and fish oil supplements, which provide omega-3 fatty acids with different but complementary anti-inflammatory effects. The right choice depends on your individual health goals — your pharmacist can help you decide.

What does the latest research say about evening primrose oil?

Research into evening primrose oil has focused primarily on its role in skin conditions, PMS, and menopausal symptoms. Evidence is mixed — some studies suggest benefit for breast pain and PMS, while results for eczema are less conclusive. The NHS and BNF note that while it has a long history of use, robust clinical trial data remains limited, and it should be used as a supplement rather than a treatment.

Is Efamol Pure Evening Primrose Oil 500mg vegan or vegetarian?

Efamol Pure Evening Primrose Oil 500mg capsules are typically made with a gelatin shell, which means they are not suitable for vegans or vegetarians. If you require a plant-based alternative, look for evening primrose oil products specifically labelled as vegan, which use a cellulose-based capsule shell instead. Always check the product label to confirm suitability.

How Should You Use Efamol Pure Evening Primrose Oil 500mg?

Using this supplement correctly gives you the best chance of experiencing its benefits. Always read the product label before starting, and follow these steps for safe, consistent use.

If you have any difficulty swallowing capsules, speak to your pharmacist for advice. Do not attempt to open the capsules and consume the oil directly, as this may affect the dose you receive.

What Is the Correct Dose of Efamol Pure Evening Primrose Oil 500mg?

The appropriate dose depends on why you are taking the supplement. The table below provides a general guide based on common indications. Always follow the label instructions or the advice of your pharmacist or GP, as individual needs may vary.

When Is the Best Time to Use Efamol Pure Evening Primrose Oil 500mg?

There is no strict rule about timing, but taking your capsules with meals — particularly breakfast and your evening meal — tends to improve the absorption of the fatty acids and reduces the likelihood of digestive discomfort. If you are taking more than two capsules per day, splitting the dose between two meals is a sensible approach. Consistency is key: taking your supplement at the same time each day helps you build a habit and ensures you do not miss doses.

Some women find it helpful to begin supplementation in the second half of their menstrual cycle if they are using it specifically for PMS support, though you should discuss this with your GP or pharmacist before adjusting your routine.

How Long Can You Use Efamol Pure Evening Primrose Oil 500mg For?

For most healthy adults, this supplement can be taken daily on a long-term basis. However, if you are using it to address a specific concern such as PMS or skin dryness, allow at least six to twelve weeks of consistent use before assessing whether it is working for you — essential fatty acid supplements often take time to build up in the body's tissues. If you have been taking it for three months without noticing any benefit, speak to your pharmacist or GP about whether to continue.

People with epilepsy, bleeding disorders, or those taking anticoagulant medicines should not use this supplement long-term without regular review by a healthcare professional.

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 Efamol Pure Evening Primrose Oil 500mg?

The majority of people who take evening primrose oil do not experience significant side effects, particularly when the capsules are taken with food. That said, some users do notice mild digestive symptoms when they first start supplementation, which usually settle within a week or two as the body adjusts.

  • Nausea or stomach discomfort, especially if taken on an empty stomach
  • Loose stools or mild diarrhoea
  • Bloating or a feeling of fullness
  • Headache
  • Indigestion

What Are the Less Common Side Effects of Efamol Pure Evening Primrose Oil 500mg?

Less frequently, some people report side effects that are not directly related to the digestive system. These are uncommon but worth being aware of, particularly if you have pre-existing health conditions or take other medicines.

  • Skin rash, itching, or hives — which may indicate a mild allergic reaction
  • Prolonged bleeding time, particularly relevant if you take blood-thinning medicines
  • In people with epilepsy, a theoretical risk of lowering the seizure threshold has been reported
  • Soft or greasy stools due to the oil content of the capsules

What Are the Serious Side Effects of Efamol Pure Evening Primrose Oil 500mg?

Serious side effects are rare but can occur. Stop taking this supplement immediately and seek urgent medical attention if you experience any of the following, as they may indicate a severe allergic reaction (anaphylaxis):

  • Swelling of the face, lips, tongue, or throat
  • Difficulty breathing or swallowing
  • Sudden drop in blood pressure or feeling faint
  • Severe skin reactions including widespread rash or blistering

If you are taking anticoagulant medicines such as warfarin and notice unusual bruising or prolonged bleeding from cuts, contact your GP promptly, as evening primrose oil may have mild antiplatelet effects that could interact with your medication.

What Should You Do If You Experience Side Effects of Efamol Pure Evening Primrose Oil 500mg?

For mild digestive side effects, try taking your capsules with a larger meal or splitting your daily dose across two meals. This simple adjustment resolves most stomach-related complaints. If side effects persist beyond two weeks or are affecting your daily life, reduce your dose and speak to your pharmacist before stopping entirely. Never abruptly stop a supplement without seeking advice if you are taking it alongside prescribed medicines.

You can report suspected side effects from food supplements to the Food Standards Agency (FSA) or speak to your pharmacist for guidance on next steps.

Can Efamol Pure Evening Primrose Oil 500mg Interact With Other Medicines?

Yes — evening primrose oil can interact with certain medicines. The most clinically significant interactions involve anticoagulant and antiplatelet drugs. If you take warfarin, aspirin, clopidogrel, or any other blood-thinning medicine, speak to your GP or pharmacist before starting this supplement, as combined use may increase your risk of bleeding. There is also a theoretical interaction with phenothiazine antipsychotics and anaesthetic agents, so always inform your anaesthetist if you take this supplement before any planned surgery.

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

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Content last updated: 31 Mar 2025

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