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Duo Plus Pack
This pack combines Alkalising Formula Plus and Vitamin D3K2 from Dr. Jacob’s®, together with an information leaflet on acid-base balance.
- Calcium and vitamins D and K contribute to the maintenance of normal bones
- Zinc contributes to normal acid-base metabolism
Shipped today if ordered before 11:45 AM · Pay in 2 or 3 instalments
Not sure about the dosage or possible interactions?
A nutritional therapist will answer you at +33 3 66 88 02 34 or by appointment.
Duo Plus Pack: Alkalising Formula Plus and Vitamin D3K2
The Duo Plus Pack brings together two Dr. Jacob’s® food supplements: Alkalising Formula Plus, a mineral formula with real lemon that is rich in potassium, calcium and magnesium, and Vitamin D3K2, which combines 800 IU (20 µg) of vitamin D3 and 20 µg of vitamin K2 MK-7 in a single drop. An information leaflet on acid-base balance completes the pack.
The two products complement each other for your bones: calcium is needed for the maintenance of normal bones and teeth, vitamin D contributes to normal absorption/utilisation of calcium and phosphorus, and vitamins D and K both contribute to the maintenance of normal bones.
Two Dr. Jacob’s® products together
1 jar of 300 g
- 750 mg of potassium, 270 mg of calcium and 188 mg of magnesium per scoop
- Zinc contributes to normal acid-base metabolism
1 dropper bottle of 20 ml
- 800 IU (20 µg) of vitamin D3 and 20 µg of vitamin K2 MK-7 per drop
- Vitamins D and K contribute to the maintenance of normal bones
The pack also contains an information leaflet on acid-base balance.
Nutrients for several body functions

Magnesium contributes to a reduction of tiredness and fatigue and to normal functioning of the nervous system.

Potassium contributes to the maintenance of normal blood pressure. Vitamin B1 contributes to the normal function of the heart.

Potassium and magnesium contribute to normal muscle function. Vitamin D contributes to the maintenance of normal muscle function and, together with vitamin K, to the maintenance of normal bones.
Two simple steps at mealtimes
Alkalising Formula Plus is mixed into a large glass of water and is best drunk during or just after a meal or snack. As vitamins D3 and K2 are fat-soluble, Vitamin D3K2 is also taken with a meal, so both products fit easily into the same routine.

Who is the Duo Plus Pack for?
- For people who wish to support their bones on a daily basis
- To combine minerals (potassium, calcium, magnesium, zinc) and vitamins D3 and K2 in a single routine
- For adults and children aged 5 and over (Alkalising Formula Plus from age 5, Vitamin D3K2 from age 4), observing the contraindications of each product
To find out more, read our guides on vitamin D and potassium.
Alkalising Formula Plus: mix 1 scoop of 6 g in approximately 300 ml of water, 1 to 2 times a day, preferably during or just after a meal or snack. Suitable for children aged 5 and over. The small, finely ground pieces of lemon can be swallowed. Shake the jar well before opening. Store in a dry place and keep the container tightly closed.
Vitamin D3K2: children aged 4 and over, 1 drop a day; aged 11 and over, 2 drops a day (1600 IU of vitamin D3), with a meal. As vitamins D3 and K2 are fat-soluble, they are best taken with a meal. Shake the bottle before use.
Contraindications
Alkalising Formula Plus: use only on medical advice in the event of potassium balance disorders caused by medication, hyperkalaemia, alkalosis or kidney failure. Not suitable for elderly people or people with kidney disorders, diabetes with insulin resistance, or those being treated for high blood pressure (do not exceed 1,000 mg of potassium per day).
Vitamin D3K2: use is not recommended if you are taking anticoagulants. Do not consume in the event of intolerance or allergy to one or more of the product’s ingredients.
Do not exceed the recommended daily dose. Keep out of the reach of young children. Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle.
Alkalising Formula Plus: potassium citrate, calcium lactate, magnesium salts of citric acid, lemon powder (5.5%) (Citrus limon (L.) Burm. f.), ascorbic acid (vitamin C), magnesium carbonate, malic acid (acidifier), silica-rich bamboo shoot extract, steviol glycosides (sweetener), zinc citrate, thiamine hydrochloride (vitamin B1), cholecalciferol (vitamin D3 from lichens). May contain traces of nuts. The citrates come from the fermentation of non-GMO maize.
Vitamin D3K2: MCT oil (medium-chain triglycerides from coconut) (Cocos nucifera) (94%), highly concentrated tocopherol-rich extracts (antioxidant, natural vitamin E), vitamin D3, menaquinone (all-trans vitamin K2 MK-7). Free from preservatives, gluten, lactose, flavourings, colourings and sweeteners.
- Reference
- 703220
- Manufacturer
- Dr. Jacob's® Medical
- Days of consumption
- ± 50 days
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Duo Plus Pack: Alkalising Formula Plus and Vitamin D3K2
The Duo Plus Pack brings together two Dr. Jacob’s® food supplements: Alkalising Formula Plus, a mineral formula with real lemon that is rich in potassium, calcium and magnesium, and Vitamin D3K2, which combines 800 IU (20 µg) of vitamin D3 and 20 µg of vitamin K2 MK-7 in a single drop. An information leaflet on acid-base balance completes the pack.
The two products complement each other for your bones: calcium is needed for the maintenance of normal bones and teeth, vitamin D contributes to normal absorption/utilisation of calcium and phosphorus, and vitamins D and K both contribute to the maintenance of normal bones.
Two Dr. Jacob’s® products together
1 jar of 300 g
- 750 mg of potassium, 270 mg of calcium and 188 mg of magnesium per scoop
- Zinc contributes to normal acid-base metabolism
1 dropper bottle of 20 ml
- 800 IU (20 µg) of vitamin D3 and 20 µg of vitamin K2 MK-7 per drop
- Vitamins D and K contribute to the maintenance of normal bones
The pack also contains an information leaflet on acid-base balance.
Nutrients for several body functions

Magnesium contributes to a reduction of tiredness and fatigue and to normal functioning of the nervous system.

Potassium contributes to the maintenance of normal blood pressure. Vitamin B1 contributes to the normal function of the heart.

Potassium and magnesium contribute to normal muscle function. Vitamin D contributes to the maintenance of normal muscle function and, together with vitamin K, to the maintenance of normal bones.
Two simple steps at mealtimes
Alkalising Formula Plus is mixed into a large glass of water and is best drunk during or just after a meal or snack. As vitamins D3 and K2 are fat-soluble, Vitamin D3K2 is also taken with a meal, so both products fit easily into the same routine.

Who is the Duo Plus Pack for?
- For people who wish to support their bones on a daily basis
- To combine minerals (potassium, calcium, magnesium, zinc) and vitamins D3 and K2 in a single routine
- For adults and children aged 5 and over (Alkalising Formula Plus from age 5, Vitamin D3K2 from age 4), observing the contraindications of each product
To find out more, read our guides on vitamin D and potassium.
Ingredients
Alkalising Formula Plus: potassium citrate, calcium lactate, magnesium salts of citric acid, lemon powder (5.5%) (Citrus limon (L.) Burm. f.), ascorbic acid (vitamin C), magnesium carbonate, malic acid (acidifier), silica-rich bamboo shoot extract, steviol glycosides (sweetener), zinc citrate, thiamine hydrochloride (vitamin B1), cholecalciferol (vitamin D3 from lichens). May contain traces of nuts. The citrates come from the fermentation of non-GMO maize.
Vitamin D3K2: MCT oil (medium-chain triglycerides from coconut) (Cocos nucifera) (94%), highly concentrated tocopherol-rich extracts (antioxidant, natural vitamin E), vitamin D3, menaquinone (all-trans vitamin K2 MK-7). Free from preservatives, gluten, lactose, flavourings, colourings and sweeteners.
Directions for use
Alkalising Formula Plus: mix 1 scoop of 6 g in approximately 300 ml of water, 1 to 2 times a day, preferably during or just after a meal or snack. Suitable for children aged 5 and over. The small, finely ground pieces of lemon can be swallowed. Shake the jar well before opening. Store in a dry place and keep the container tightly closed.
Vitamin D3K2: children aged 4 and over, 1 drop a day; aged 11 and over, 2 drops a day (1600 IU of vitamin D3), with a meal. As vitamins D3 and K2 are fat-soluble, they are best taken with a meal. Shake the bottle before use.
Contraindications
Alkalising Formula Plus: use only on medical advice in the event of potassium balance disorders caused by medication, hyperkalaemia, alkalosis or kidney failure. Not suitable for elderly people or people with kidney disorders, diabetes with insulin resistance, or those being treated for high blood pressure (do not exceed 1,000 mg of potassium per day).
Vitamin D3K2: use is not recommended if you are taking anticoagulants. Do not consume in the event of intolerance or allergy to one or more of the product’s ingredients.
Do not exceed the recommended daily dose. Keep out of the reach of young children. Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle.
Comparez les formules alcalinisantes Dr. Jacob's®
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|---|---|---|---|---|---|---|
| Sa particularité |
L'originale 95 % de citrates, sans sucre ni édulcorants |
Format comprimés Minéraux + vitamines C & D3 |
La plus complète en poudre Minéraux + vitamines + vrai citron |
La formule la plus pure Minéraux uniquement, sans vitamines ajoutées |
Système nerveux & sérénité Mélisse + magnésium + vitamines B |
Articulations & os Glucosamine + hyaluronate + vitamine C |
| Potassium / dose | 750 mg | 900 mg | 750 mg | 750 mg | 600 mg | 640 mg |
| Calcium / dose | 270 mg | 412,5 mg | 270 mg | 270 mg | — | 230 mg |
| Magnésium / dose | 185 mg | 281,25 mg | 187,5 mg | 187,5 mg | 375 mg | 180 mg |
| Zinc / dose | 2,5 mg | 3,75 mg | 2 mg | 2,5 mg | 3 mg | 2,5 mg |
| Vitamine C | — | 60 mg | 80 mg | — | 80 mg | 120 mg |
| Vitamine D3 | 2,5 µg | 3,75 µg | 2,5 µg | — | — | 2,5 µg |
| Vitamines B | B1 | — | B1 + biotine | — | B1, B2, B3, B5, B6, B9, B12 & biotine | B1 |
| Silicium / dose | 20 mg | 48 mg | 29 mg | 23 mg | — | 20 mg |
| Actifs spécifiques | — | Acérola |
Acérola Citron |
Extrait de bambou |
417 mg d'extrait de mélisse 520 mg d'inuline Vitamine E |
400 mg de sulfate de glucosamine 80 mg d'hyaluronate de sodium Cassis, cynorrhodon & canneberge |
| Forme des minéraux | 95 % de citrates | Principalement citrates | Citrates & lactates |
98 % sous forme citrate & lactate |
Citrates de potassium et magnésium |
Citrates & lactates |
| Goût & utilisation |
Note d'agrumes Non sucré |
Neutre Comprimés |
Fruité & frais au citron Légèrement sucré à la stévia |
Neutre Poudre à diluer |
Comprimés |
Fruité aux baies Légèrement sucré à la stévia |
| Dose quotidienne |
1 mesure 4,5 g |
6 comprimés |
1 mesure 6 g |
1 mesure 5,5 g |
5 comprimés |
1 à 2 mesures 6 à 12 g |
| Conditionnement |
300 g ± 66 portions |
250 comprimés ± 41 doses journalières |
300 g 50 portions |
200 g ± 36 portions |
250 comprimés 50 portions |
300 g 50 portions |
Les valeurs indiquées correspondent à la dose quotidienne ou à une portion indiquée sur l'étiquette de chaque produit.
Toutes ces formules contribuent au maintien d'un métabolisme acido-basique normal grâce au zinc.
Technical specifications
Formulated with rigor, this product combines quality, efficiency and naturalness. Each ingredient is carefully selected and transformed in respect of the assets.
- Reference
- 703220
- Manufacturer
- Dr. Jacob's® Medical
- Days of consumption
- ± 50 days
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Dr. Jacob's® Medical
Founded in 1997 by two physicians, Dr Manfred Jacob and Dr Ludwig Jacob, Dr. Jacob’s Medical develops food supplements and holistic health concepts, made in Germany and 100% vegetarian.
Discover its flagship products: the Alkalising Formula, the Pomegranate Elixir, Vitamin D3K2 and Chi-Cafe.


Dr. Jacob's Foundation
Our goal: nutritious meals for people in need.
Plant meals are:
✔ More economical | ✔ Healthier | ✔ More respectful of animals and climate
For more than 20 years, Dr. Jacob, the Foundation and Dr. Jacob's Medical GmbH, have been supporting on-scale projects that extend to humanitarian aid to climate protection, the environment and health.
Our motto: a sustainable and efficient property.





































