Pre-order: one or more items in this bundle are on pre-order. We'll dispatch your bundle as soon as all items are in stock (due in stock end of October 2026).
Premium Omega 3, Vitamin D3 + K2 and Triple Magnesium in one daily routine.
What's in the bundle
- Premium Omega 3 Fish Oil: 330mg EPA and 220mg DHA per capsule (660mg EPA and 440mg DHA in 2 capsules), with natural mixed tocopherols. Fish gelatine capsule.
- Vitamin D3 4,000 IU + K2: vitamin D3 100µg (4,000 IU) with vitamin K2 (MK-7) 100µg per capsule.
- Triple Magnesium Complex: 96mg magnesium per capsule (26% NRV); 2 capsules 192mg (51% NRV), from magnesium citrate, glycinate and malate. Vegetarian capsule.
Key benefits
- EPA and DHA contribute to the normal function of the heart (beneficial effect with a daily intake of 250mg EPA and DHA) when taking 2 capsules of Omega 3 daily.
- DHA contributes to the maintenance of normal brain function and normal vision (beneficial effect with a daily intake of 250mg DHA) when taking 2 capsules of Omega 3 daily.
- Vitamin D contributes to the maintenance of normal bones, teeth and muscle function.
- Vitamin D contributes to the normal function of the immune system.
- Vitamin K contributes to the maintenance of normal bones and to normal blood clotting.
- Magnesium contributes to a reduction of tiredness and fatigue.
- Magnesium contributes to normal muscle function.
- Magnesium contributes to normal functioning of the nervous system.
- Magnesium contributes to normal psychological function.
- Magnesium contributes to the maintenance of normal bones and teeth.
Why Dr Marks?
Formulated by GPs, using active forms where it matters, and bundled so you can save compared with buying each product separately.
Directions
- Premium Omega 3 Fish Oil: 1 or 2 capsules daily with food and water (the brain, vision and heart benefits come from 2 capsules daily).
- Vitamin D3 4,000 IU + K2: One capsule daily with food.
- Triple Magnesium Complex: One or two capsules daily with water.
Do not exceed the recommended dose of any product.
Good to know
The Omega 3 capsule contains fish (fish gelatine), so this bundle is not suitable for vegetarians. Contains vitamin K. If you take anticoagulant medicine such as warfarin, speak to your GP or pharmacist before taking these products. Check with your GP or pharmacist first if you take anticoagulants or have a fish allergy. If you take levothyroxine, bisphosphonates, or tetracycline/quinolone antibiotics, leave 2 to 4 hours between doses, and check with your GP or pharmacist if you take thiazide diuretics, digoxin, or have kidney disease. If you have atrial fibrillation or another heart rhythm problem, seek advice from your GP or pharmacist before use.
Do not take alongside other vitamin D supplements or multivitamins containing vitamin D. 100µg (4,000 IU) is the maximum daily amount of vitamin D for adults.
Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle. Keep out of reach of children.
A GP’s View on Supplement Timelines
Consistent Daily Use: What Happens in the Body
Many supplement brands print fixed charts promising you will “feel more energy in Week 2” or “see thicker hair in Month 2”. As practising UK GPs, we won’t do that. What happens when you take a supplement depends on whether you are topping up an everyday diet (where nutrients work quietly in the background and you may not “feel” a sudden change) or correcting a low level found on a GP blood test.
Days 1–7
Daily routine & digestive comfort
Take 1 capsule a day with a main meal and water. Taking your capsule with food is gentler on the stomach and helps fat-soluble vitamins absorb normally.
Weeks 2–6
Steady daily nutritional intake
Consistent daily intake helps top up your diet every day rather than in sporadic bursts. Water-soluble nutrients (such as B vitamins and vitamin C) are used daily and aren’t stored in large amounts, while fat-soluble nutrients (such as vitamin D) build up gradually with steady daily intake.
Weeks 8–12 (1–2 pouches)
Long-term maintenance & GP blood re-checks
Red blood cells turn over roughly every 90 to 120 days. When a GP treats a confirmed low level (such as vitamin B12 or vitamin D), NICE and NHS guidance typically schedules a clinical review or follow-up check around 3 months. For everyday dietary top-ups, steady ongoing habits matter most.
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Dr Marc CrutchleyMBChB MRCGP MSc BSc (Hons), Co-founder
Dr Mark WilshereMBChB MRCGP DCH BSc (Hons), Co-founder
GP-Formulated in the UK✓ GMC-Registered Practising UK GPs · 40+ Years Combined Experience
Meet the GPs behind Dr Marks
Formulated by Dr Marc Crutchley and Dr Mark Wilshere, practising UK GPs.
With over 40 years of combined clinical experience as GMC-registered UK GPs, we formulate every Dr Marks supplement using bioavailable nutrient forms at meaningful daily doses — in clean plant-based capsules with zero synthetic fillers or binders.
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