4.7
Rated 4.7 out of 5 stars
423 Reviews

Magnesium & Marine Collagen Support

Nourish and regenerate your skin's dermal and hypodermal layers

22 ingredients
For Deep Tissue Cleansing, Growth and Repair

Magnesium Boosts 300+ Metabolic Functions
For Detox, Sleep and Tissue Regeneration

Marine Collagen Peptides
The Essential Building Blocks for Your Skin

CoQ10 and Hyaluronic Acid:
Deep Hydration, Elasticity and Wrinkle Smoothing

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“A key standout for this collagen and magnesium protocol is the broad range of nutrients, in exceptionally well-absorbed forms, that are proven to support skin health."
Shona Wilkinson - BSc (Hons), NTP, CNHC

Pro Magnesium 4

  • 4 times better absorption of magnesium
  • Better sleep quality when taken at bedtime
  • Activated vitamin B6 for better uptake
  • Chelated zinc for a healthier immune system 
  • Stronger muscles and healthier nerves with superior magnesium compounds
  • Zero additives

Marine Collagen Peptides

  • Fuels your body's own collagen production
  • Healthier skin from within with 2.5bn live probiotic cultures
  • Activated beauty vitamins for faster, visible results
  • Super hydration with Hyaluronic Acid
  • Supports skin’s natural moisture barrier with CoQ10
  • Zero artificial additives

Directions:

Magnesium: Take 2 capsules a day with food, ideally in the evening to enjoy better, more refreshing sleep. 

Marine Collagen: Take 2 capsules a day, with a drink or food. Ideally, take one in the morning and one in the evening.

Do not exceed the stated dose. 

Storage: Store in a cool, dry place out of direct sunlight. Keep out of the reach of children.

Caution: Contains Allergen: Fish.
This product is not suitable for vegetarians or vegans. If you are pregnant, breastfeeding, taking medication or due for surgery it is advisable to consult a GP prior to taking any supplements. Not intended for use by persons under the age of 18 years old.

Magnesium 4
300 mg of Magnesium, made up of:

  • 146 mg of Magnesium Bisglycinate
  • 25 mg Magnesium Malate
  • 14 mg Magnesium Taurate
  • 114 mg Magnesium Citrate

9 mg Zinc, made up of:

  • 3 mg Zinc Picolinate
  • 3 mg Zinc Bisglycinate
  • 3 mg Zinc Citrate

7 mg of Activated Vitamin B6 (Pyridoxal-5-Phosphate)
25 mcg of Vegan Vitamin D3 from algae

Marine Collagen Peptides

  • 1000 mg of Hydrolysed Marine Collagen Peptides (Type I collagen)
  • 100 mg of Hyaluronic Acid 
  • 50 mg of CoQ10
  • 2.5 billion CFU of Lactobacillus 
  • 66 mcg of Kelp Extract (35:1) containing Iodine
  • 60 mg of Pureway®  Vitamin C 
  • 50 mcg of Biotin (vitamin B7)
  • 11 mg of Natural Vitamin E
  • 5 mg of Zinc 
  • 500 mcg of Copper 
  • 4 mg of Riboflavin (vitamin B2)
  • 16 mcg of Selenium 
  • 15 mg of Nicotinamide (vitamin B3)
View full ingredients

Nutritional Facts

Serving Size: 2 Capsules
Servings Per Container: 30

Amount Per Serving *NRV
Marine Collagen  1000 mg **
Hyaluronic Acid  100 mg  **
Vitamin C  60 mg  75% 
Coenzyme Q10 50 mg  **
Vitamin B3  15 mg  94% 
Zinc  5 mg  50% 
Vitamin E  11 mg a-TE  92% 
Lactobacillus Acidophilus  2.5B CFU  **
Iodine  66 µg 44% 
Vitamin B2  4 mg  286% 
Copper  500 µg 50% 
Selenium  16 µg 29% 
D-Biotin 50 µg 100% 
Magnesium Blend (as Glycinate, Citrate, Malate and Taurate) 1867 mg **
Providing Elemental Magnesium 300 mg  80%
Vitamin B6  7 mg  500% 
Zinc 9 mg  90%
Vitamin D3  25 µg 500% 

*NRV = Nutrient Reference Value
** = No NRV Established

Ingredients:
Hydrolysed Marine Collagen (Fish), Vegetable Capsule Shell (HydroxyPropylMethylCellulose), Hyaluronic Acid (Sodium Hyaluronate), Vitamin-C (PureWay-C®), CoenzymeQ10 (ubiquinone), Rice Extract Blend, Nicotinamide (Vitamin B3), Zinc Citrate, Vitamin E (D-Alpha Tocopheryl Succinate), Lactobacillus, Acidophilus, Iodine from Kelp (Bladderwrack) Extract (35:1), Riboflavin (Vitamin B2), Copper Gluconate, Selenium (Sodium Selenite), D-Biotin (Vitamin B7).
Magnesium Citrate, Magnesium Bisglycinate, Vegetable Capsule Shell (Hydroxy- PropylMethylCellulose), Magnesium Taurate, Magnesium Malate, Zinc Picolinate, Zinc Bisglycinate, Vitamin B6 (Pyridoxal 5-Phosphate), Vitamin D3 from Algae, Zinc Citrate.
For allergens see ingredients in bold



Optimally Formulated Nutraceuticals

Magnesium & Collagen Designed by nutritionists

Active vitamins that work faster

The vitamins we use are activated forms, ready for your body to use. You’ll absorb much more and feel the benefit sooner.

Organic minerals so you absorb more

The magnesium and zinc in our supplements are bonded to organic molecules. You can absorb around 4 times more, and avoid tummy troubles.

Junk-Free Guarantee

Say no to artificial additives! There’s just a tiny bit of natural rice extract in the Marine Collagen capsules, which keeps the active ingredients fresh. Apart from that, both supplements contain just the active ingredients, nothing more. 

Frequently Asked Questions about Magnesium and Marine Collagen

Both supplements provide the peptides necessary to stimulate and facilitate the synthesis of collagen in our own tissues, which wear down over time. Magnesium is a mineral that, among many other functions, helps to build tissue due to its role in protein synthesis. In addition, collagen is related to bone density and helps regenerate cartilage, tendons and bones. Combining both substances enhances the properties of each.

Type 1 marine collagen most closely resembles the collagen found in human skin, making it highly effective for improving skin elasticity, hydration, and reducing wrinkles. It is also easier to absorb than other types, such as bovine or porcine collagen - ours especially so as it is enzymatically hydrolysed to make the molecules even smaller.

Yes. Collagen is a structural protein found in bone, skin, and other tissues, and magnesium plays a crucial role in bone health and collagen production. Here's how they work together: Magnesium ions can bind to collagen, stimulating osteoblasts (cells that build bone) and activating signalling pathways that promote bone growth and development. Magnesium contributes to collagen production, which is essential for maintaining skin's elasticity and firmness. It also helps protect skin against free radical damage. 

We use four different forms of magnesium—magnesium bisglycinate, magnesium citrate, magnesium malate, and magnesium taurate—to maximise absorption and target various health benefits. Each form has a unique absorption rate and role in the body. Magnesium citrate and glycinate are known for their high bioavailability and gentleness on the stomach, while magnesium malate supports muscle function and energy production. Magnesium taurate is particularly adapted to support heart health and calm the nerves.

You cannot get the full benefits of magnesium without getting your full requirement of zinc too - and they’re both surprisingly common deficiencies. Zinc works as a partner to magnesium to support many of its vital functions including immune defence, making proteins for hormones and muscle, and for helping wounds heal. Zinc also plays a crucial role with magnesium in keeping cognitive functioning active.

Swallow magnesium is specially formulated to minimise tummy upset by using a balanced blend of four magnesium types that are gentler on the digestive system, chosen for their high absorption rates. Cheap magnesium supplements can cause digestive issues, like diarrhoea or stomach upset, if they contain too much magnesium oxide which draws water into the bowels. 

We offer free delivery on all orders which takes 2-4 days. Express delivery is available for £3.95 and takes 1-2 days. For more information see our Shipping Policy

Magnesium & Marine COllagen Ingredients

What's inside

Backed by Science

Trusted, natural and safe

80 %
of your dermal skin layer is collagen type 1, also found in fish
300 +
metabolic functions are powered by magnesium and zinc
30 %
of the protein in our bodies is collagen Types 1, 2 and 3

Don't just take our word for it

Can't believe how good this collagen is

Was told abut this by a friend and I can't believe how good it is, cleared up my skin as well as improving wrinkles. It's got more vitamins than most of what you see on the market so probably good for general health.

Susan Martin, Bristol

The Swallow pro collagen peptide jar on stand

Gentle on tummy

Taken magnesium for years, didn't get tummy trouble on this one, will stick with it.

Susan C, Worcester

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4.7
Rated 4.7 out of 5 stars
Based on 423 reviews
92%would recommend these products
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423 reviews
  • PW
    Paul W.
    Verified Buyer
    Reviewing
    Pro Magnesium 4 Complex
    I recommend this product
    Rated 5 out of 5 stars
    2 weeks ago
    Pro Magnesium 4 Complex for Sleep & Energy

    For me, best taken in the morning. Later in the day I had more intense dreams (might just be me an current situation?) But either way sleep quality has been helpred.

    The Swallow Co
    1 week ago

    Hi Paul, thank you so much for your 5-star review! We really appreciate you taking the time to share your feedback with us.

    It's wonderful to hear that Pro Magnesium 4 Complex has helped improve your sleep quality. Thanks so much for sharing your experience with the timing that works best for you. We're thrilled you're seeing such positive results!

  • KS Profile picture for Karen S.
    Karen S.
    Verified Buyer
    Reviewing
    Pro Magnesium 4 Complex
    I recommend this product
    Rated 5 out of 5 stars
    2 weeks ago
    Sleep and Rest

    I sleep so well since being on this medication, feel rested and loads calmer. My husband is on it too, and I’ve noticed the change in him and it’s a real big change.

    Worth every penny

    The Swallow Co
    1 week ago

    Hi Karen, thank you so much for your 5-star review! We really appreciate you taking the time to share your feedback with us.

    It's wonderful to hear that Pro Magnesium 4 Complex has made such a positive difference for you and that you're sleeping so well and feeling rested and calmer. We're also thrilled that you've noticed such a real big change in your husband since he's been on it too. Thanks so much for your support!

  • PK
    Paulina K.
    Verified Buyer
    Reviewing
    Pro Magnesium 4 Complex
    I recommend this product
    Rated 5 out of 5 stars
    2 weeks ago
    Good product

    Just finishing my first bottle. Started taking to reduce my anxiety and sleeping issues. Already knew magnesium helps for this things , and was taking different one before but when i stopped it all my anxiety came back even worse. Started to research different types of magnesium and came across this one. Loved all the reviews which made me trust in it. Going through perimenopause which seems to help with that too.

    The Swallow Co
    2 weeks ago

    Hi Paulina, thank you so much for your 5-star review! We really appreciate you taking the time to share your feedback with us.

    It's wonderful to hear that Pro Magnesium 4 Complex is making such a positive difference for you. We're thrilled that you're already experiencing improvements with your anxiety and sleeping issues, and that it's been helpful during perimenopause as well. It's great that you did your research and found a product you can trust! Thanks so much for your support, and we hope you'll continue to see great results with your next bottle.

  • JE
    Jackolyn E.
    Verified Buyer
    Reviewing
    Pro Magnesium 4 Complex
    I recommend this product
    Rated 4 out of 5 stars
    3 weeks ago
    Pro Magnesium

    I have taken my 1st full bottle now & I must say I’m starting to feel much better .

    My sleep has always been erratic, but I’m finding I sleep longer before waking up now , I can get a good 4 hours in before I’m awake.

    I have more energy & I’m definitely less sluggish & bloated .

    I will carry on with the tablets , because I definitely think for me, it is starting to make a huge difference.

    The Swallow Co
    3 weeks ago

    Hi Jackolyn, thank you so much for your 4-star review!

    We really appreciate you taking the time to share your feedback with us. It's fantastic to hear that you're already noticing such positive changes after completing your first bottle.

    We're thrilled that the Pro Magnesium 4 Complex is making such a difference for you, and we're really glad you're planning to continue with it. Thanks again for your support!

  • RF
    Robert F.
    Verified Buyer
    Reviewing
    Pro Magnesium 4 Complex
    I recommend this product
    Rated 5 out of 5 stars
    1 month ago
    Great product

    Magnesium 4 complex is the best product I have tried in years. I suffer from afib and palpitations and having researched what could work to ease the symptoms i came across a cardiologist on the internet who suggested to take magnesium. After trying several other products and not seeing any results I decided to try this one. It has now been several months and I can report that the afib is a lot better and the palpitations have halved! If it’s heart health you need then this product is well worth a try. I sleep like a baby and don’t have the afternoon slump anymore.

    The Swallow Co
    1 month ago

    Hi Robert, thank you so much for your wonderful 5-star review! We're absolutely delighted to hear that our Pro Magnesium 4 Complex for Sleep & Energy has been the best product you've tried in years and has made such a significant difference to your afib and palpitations. It's fantastic that you did your research and found the guidance from the cardiologist about magnesium - it sounds like you really persevered to find the right solution for your heart health. We're thrilled that after several months you're experiencing such positive results, with your afib improving significantly and your palpitations halving. It's wonderful to hear that you're sleeping like a baby and no longer experiencing that afternoon slump - these are exactly the kind of benefits our specialised four-complex magnesium formula is designed to support. Thank you for sharing your experience, as it will be really helpful for other customers considering our Pro Magnesium for their heart health and overall wellbeing.