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14 reviews
Vitamin D3 Liquid - Immune Booster Drops
875 Drops

Support your immune system while combating the common symptoms of Vitamin D3 deficiency such as decreased energy levels, weakness and muscle pain, and increased risk of bone loss, fractures, and osteoporosis, with the Probio Vitamin-D3-Liquid.Providing 20 µg (800 IU) per serving in the purest and most absorbable form, these premium Vitamin D3 drops give you the expected benefits of Vitamin D supplementation without giving you the risk for Vitamin D toxicity as most supplements on the market right now.


Standard Shipping: 2 Working Days
Express Shipping: 1 Working Days

EU States

Standard Shipping: 5 Working Days
Express Shipping: 2 Working Days

Outside EU

Standard Shipping: 15 Working Days
Express Shipping: 5 Working Days

Your Benefits

Support your immune system while combating the common symptoms of Vitamin D3 deficiency such as decreased energy levels, weakness and muscle pain, and increased risk of bone loss, fractures, and osteoporosis, with the Probio Vitamin-D3-Liquid.

Healthy Immune System

supports a healthy immune system, fertility, and good general health

Bones and teeth

strong bones and teeth

Muscle Function

optimal nerve and muscle function

Strength Formula

high strength formula with great bioavailability and absorption

Lessen the severity of COVID-19

Contributes to lessen the severity of COVID-19

Why Probio?

Pure Vegan

GMO Free

Gluten FREE



Vitamin D3 plays a significant role in the absorption of calcium and phosphorus. This vitamin is also important in the functioning of the immune system. Think of it as a key vitamin for bone health, and overall resistance of your body and immune system to external damages caused by free radicals.

Also called “The Sunshine Vitamin” since it’s provided by the sun, our body often has shortages that come with certain symptoms such as low energy, weakness and muscle pain, headaches, increased risk of bone loss, fractures, and osteoporosis, compromised immune system and more.

The smartest solution to keep your body supported with this key vitamin is to supplement it. But the problem arises when you take capsules that are hard to absorb and when they are too strong. Here at Probio we created Vitamin-D3-Liquid, an optimal and highly absorbent formula of Vitamin D3 in its purest, liquid form.


Packed in a premium bottle with a dropper, all you need is just 1-2 drops to get 20 µg (800 IU) of Vitamin D3. Unlike other brands, the Probio vitamin d3 supplement is highly concentrated and bioavailable since it comes in liquid form. Even more so, our formulation is enhanced with MCT oil to aid absorption and digestion.

Premium Brand You Can TRUST:

Buy from a German supplement brand that uses no added sugar, gluten, lactose, preservatives, or colouring agents. Founded in 1993, Probio is recognized as one of Europe’s best supplement brands that successfully balances natural ingredients and science. All Probio supplements, including this liquid vitamin D3 supplement, are produced in a certified factory in Germany with the highest production standards and inspection for quality and purity.


Overcomes the subtle, yet damaging, symptoms of a vitamin D deficiency

Fewer headaches, more energy, better performance, and improved concentration.

Supports your immune system and immune response in case of infections such as Covid 19

Strengthen bones and teeth

Supports heart health healthy heart

Protects skin

Reduces inflammation

Serving Size: 1 Drop
Amount Per Serving % DV
Vitamin D3
  (as cholecalciferol)
20 µg
800 IU
DV = Daily Value
** «-» - no DV established


MCT-oil (from coconut oil), cholecalciferol-D3.


Gluten, Wheat, Yeast, Sugar, Salt, Artificial Flavors, Artificial Sweeteners, Artificial Preservatives, Artificial Colors


As a dietary supplement for adults, take one drop every two days, preferably at mealtime, or as prescribed by a healthcare practitioner.

Dietary supplements should not be used as a replacement for a varied and balanced diet and a healthy lifestyle.

If you are pregnant, nursing, taking any medications, including blood thinners, planning any medical or surgical procedure or have any medical condition, please consult your healthcare practitioner before taking any dietary supplement. Discontinue use and consult your healthcare practitioner if any adverse reactions occur.

Keep out of reach of children. Store at room temperature. Do not use if outer bottle seal is missing or damaged.

Customer Reviews
5.0 Based on 14 Reviews
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Filter Reviews:
    Philip F.
    Bad Vilbel, Hesse, Germany

    Alles Bestens!

    Alles bestens

    Ich glaube wenn Rewe euer Produkt nun auch schon anbietet- spricht das für sich... Alles bestens! Klein, handlich und immer dabei.


    Immer dabei und einfach zu dosieren. Geschmack ist neutral und kann man überall dazumischen.

    Gut gegen Vitamin D Mangel

    Mir wurde das Produkt von meinem Heilpraktiker empfohlen. Ich habe an einem Vitamin-D-Mangel gelitten. Die hohe Dosierung und natürlichen Inhaltsstoffe, haben mich zum Kauf bewogen. Das Produkt ist einfach anzuwenden und zu dosieren. Ich empfehle am Anfang jedoch die Dosierung deutlich höher zu wählen und dann so nach 10- 14 Tagen an die eigentliche Dosierung mit einem Tropfen alle 2 Tage, anzupassen. Ich habe die ersten 2 Wochen mit ca. 7-12 Tropfen pro Tag begonnen, um dem Körper ein Grundepot an Vitamin-D aufbauen zu lassen. Laut der letzten Blutanalyse habe ich nun keinen Vitamin-D-Mangel mehr. Nebenwirkungen oder Unverträglichkeiten konnte ich bei mir keine feststellen. Meine Kinder nehmen Vitamin-D-liquid nun auch.

    Emanuel A.
    Berlin, Land Berlin, Germany
    Great product

    I am very happy with the Vitamin D3-Liquid since they are so easy to use and I feel very well with them. Cool! Keep the good work up!

    Bringing Beauty to the World

    Probio Shipping

    We believe that everyone deserves a luxury, stress-free shopping experience. Probio is proudly stocked in dozens of luxury beauty and wellness stores across Europe, but we also make it easy to shop from the comfort of your home. All orders placed before 2 PM will ship from our headquarters in Germany the same business day!

    If you choose to purchase Probio supplements from our website, we offer a variety of shipping options for your convenience and every order is carefully packed by hand. Your happiness and health are our top priorities.

    Worldwide Shipping

    Probio ships across Europe and around the world with DHL’s international service.

    Easy Tracking

    Keep track of your order from the moment that it ships with real-time DHL tracking.

    Reliable Transit

    As a DHL partner, Probio guarantees timely, affordable shipping options.

    Fast, Affordable Shipping

    Enjoy timely delivery on every order with standard delivery. Or, upgrade to express! International orders are subject to customs control at the border, which may delay delivery, but we do our best to ensure a seamless shipping process for you. Express rates vary according to package weight and destination, so it’s important to confirm the price at checkout.

    Worldwide Delivery

    Instructions for cancellation & Cancellation form

    Consumers, i.e. any individual acting for purposes which are wholly or mainly outside those individual’s trade, business, craft or profession, are entitled to cancel any contract on the following conditions:

    A. Instructions for cancellation

    Right to cancel

    You have the right to cancel this contract within fourteen days without giving any reason.

    The cancellation period will expire after 14 days from the day on which you acquire, or a third party other than the carrier and indicated by you acquires, physical possession of the goods.

    To exercise the right to cancel, you must inform us (Probio Naturprodukte Handels GmbH, Frankfurter Straße 47-49, 61118 Bad Vilbel, Deutschland, Tel.: 08008070100780, E-Mail: of your decision to cancel this contract by a clear statement (e.g. a letter sent by post, fax or e-mail). You may use the attached model cancellation form, but it is not obligatory.

    To meet the cancellation deadline, it is sufficient for you to send your communication concerning your exercise of the right to cancel before the cancellation period has expired.

    Effects of cancellation

    If you cancel this contract, we will reimburse to you all payments received from you, including the costs of delivery (except for the supplementary costs arising if you choose a type of delivery other than the least expensive type of standard delivery offered by us) without undue delay and not later than fourteen days after the day on which we are informed about your decision to cancel this contract. We may make a deduction from the reimbursement for loss in value of any goods supplied, if the loss is the result of unnecessary handling by you. We will make the reimbursement using the same means of payment as you used for the initial transaction, unless you have expressly agreed otherwise. In any event, you will not incur any fees as a result of the reimbursement. We may withhold reimbursement until we have received the goods back or you have supplied evidence of having sent back the goods, whichever is the earliest.

    You shall send back the goods or hand them over to us without undue delay and in any event not later than fourteen days from the day on which you communicate your cancellation from this contract to us. The deadline is met if you send back the goods before the period of 14 days has expired.

    You will bear the direct cost of returning the goods.

    You are only liable for any diminished value of the goods resulting from the handling other than what is necessary to establish the nature, characteristics and functioning of the goods

    Exclusion and/or premature expiration of the right to cancel

    The right to cancel ceases to be available in the case of a contract for the supply of sealed goods which are not suitable for return due to health protection or hygiene reasons, if they become unsealed after delivery.

    The right to cancel does not apply for consumers who, at the time of concluding the contract, are not nationals of a member state of the European Union and whose exlusive residence and address of delivery are located outside of the European Union.

    General information

    • Please prevent damage to and contamination of the goods. Please return the goods, if possible, in the original packaging with all accessories and all packaging components. If necessary, please use protective outer packaging. If you are no longer in possession of the original packaging, please use suitable packaging providing adequate protection against potential transport damage.
    • Please do not return the goods freight forward.
    • Please note that the above general information in section 1 and 2 is not a precondition for effectively exercising your right to cancel.

    B. Cancellation form

    If you wish to cancel this contract, please complete and submit this form.

    Probio Naturprodukte Handels GmbH

    Frankfurter Straße 47-49

    61118 Bad Vilbel



    I/We (*) hereby give notice that I/We (*) cancel my/our (*) contract of sale of the following goods (*) /for the supply of the following service (*),



    Ordered on (*) ____________ / received on (*) __________________


    Name of consumer(s)


    Address of consumer(s)


    Signature of consumer(s) (only if this form is notified on paper)



    (*) Delete as appropriate