Biogena Vitamin D3 Drops
25 ml · 1–2 drops per day
AD1131373
Product description
Dosage, ingredients, price and laboratory status have been fully checked against the current manufacturer page. The manufacturer states 1–2 drops daily but does not publish the total number of drops in the 25 ml bottle. Supply and price per day therefore remain deliberately blank; no drops per ml are estimated.
Vitamin D3
1,000 IE per dayAssessment by Oliver Fröhner
Micronutrient expert & Food Coach
Product character
Dosage, ingredients, price and laboratory status have been fully checked against the current manufacturer page. The manufacturer states 1–2 drops daily but does not publish the total number of drops in the 25 ml bottle. Supply and price per day therefore remain deliberately blank; no drops per ml are estimated.
Formula & transparency
- Ingredients list fully checked
- Without microcrystalline cellulose according to the fully reviewed ingredient list
- Without silicon dioxide according to the fully reviewed ingredient list
- Product data reviewed within the freshness period
Points to consider
- A current product- or batch-specific notice is available.
Data basis
- Lab report available but not marked as reviewed
Summary by Oliver Fröhner
Dosage, ingredients, price and laboratory status have been fully checked against the current manufacturer page. The manufacturer states 1–2 drops daily but does not publish the total number of drops in the 25 ml bottle. Supply and price per day therefore remain deliberately blank; no drops per ml are estimated.
Manufacturer information and Oliver Fröhner’s editorial assessment are presented separately. Data checked: 21 Sep 2026.
Active ingredients & NRV
Active ingredients
Ingredients & additives
Sonnenblumenöl (Helianthus annuus), Cholecalciferol.
Directions & package
Take 1–2 drops daily with a meal.
25 ml · 13–25 days
Quality, lab & sources
Lab status: Lab report available
Vitamin D3 as cholecalciferol in sunflower oil; official BIOGENA laboratory area with several product-related certificates.
Product data checked on 21 Sep 2026.
Notes
Do not exceed the recommended daily intake; not a substitute for a balanced and varied diet and a healthy lifestyle. Keep out of reach of children.
Micronutrient knowledge
Micronutrient knowledge
Physiological functions, notes on high or insufficient intake and relevant interactions — presented separately from the specific product assessment.
Vitamin D3
Vitamin D is a fat-soluble vitamin and also a precursor of hormonally active metabolites. For the assessment of supplements, product dose, dosing interval, total intake, 25-OH-vitamin-D status and safety limits are considered separately.
Functions
EU-authorised functions include, among other things: vitamin D contributes to normal absorption and utilisation of calcium and phosphorus, normal blood calcium levels, the maintenance of normal bones and teeth, normal muscle function and normal functioning of the immune system. Vitamin D also has a role in the process of cell division.
Possible signs of insufficient intake
Inadequate vitamin D status cannot be reliably identified from individual nonspecific symptoms. For individual assessment, 25-OH-vitamin-D status together with exposure, diet and supplemental intake is more informative than symptoms alone.
Points to consider at high intake
A markedly excessive vitamin D intake over a prolonged period can lead to hypercalcaemia and hypercalciuria and thereby place a burden on the kidneys and other organ systems. Upper Intake Levels are safety limits for long-term intake and are not optimal target values.
Special considerations
Particular caution is required, among other situations, with diseases or therapies that affect calcium metabolism or kidney function. High doses should not be derived solely from general target values.
Interactions / caution
Vitamin D can interact with certain medicines; relevant examples include drugs that affect calcium or vitamin D metabolism. With prolonged higher-dose use, individual medication should be taken into account.
Scientific assessment
Studies, meta-analyses and randomized controlled trials on the active ingredient – explained clearly and linked to sources.
AD1131373
The information is provided for factual classification of product and nutrient data. It does not replace medical diagnosis or individual treatment advice.