6D Vitamin D3 Drops

How Vitamin D3 Drops by 6d Sports Nutrition supports your objectives

☀️ Corrects the most common micronutrient deficiency in athletes Vitamin D deficiency is widespread in the general population and even more prevalent among athletes who train indoors, compete in covered venues, or live in northern latitudes with limited winter sun. Studies consistently show that a significant proportion of endurance and indoor sport athletes are vitamin D insufficient, with measurable negative effects on performance, recovery and immune function. A daily drop provides targeted, consistent replenishment of the most commonly depleted micronutrient in active populations.

🦴 Supports bone density and stress fracture prevention Vitamin D plays an essential role in calcium absorption and bone mineralisation. For athletes who put repeated mechanical load on their bones through running, cycling or jumping, maintaining adequate vitamin D status is directly linked to bone density and stress fracture risk. Chronically low vitamin D accelerates bone resorption and increases susceptibility to overuse injuries, particularly tibial and metatarsal stress fractures in runners.

💪 Supports muscle function and strength Vitamin D receptors are present in skeletal muscle tissue, and research shows that adequate vitamin D status is associated with improved muscle strength, power output and neuromuscular coordination. Deficiency has been linked to muscle weakness, reduced explosive performance and slower post-exercise recovery. For strength and power athletes, maintaining optimal vitamin D levels is a foundational element of physical performance.

🛡️ Immune system support during high training load periods Intense training temporarily suppresses immune function. Vitamin D plays a well-established modulatory role in the immune system, supporting both innate and adaptive immune responses. Athletes with adequate vitamin D levels show better resistance to upper respiratory tract infections — one of the most common training interruptions in endurance sport — particularly during winter months when sun exposure is minimal.

💧 Superior bioavailability through MCT oil delivery Fat-soluble vitamins require dietary fat for absorption from the gut. Most vitamin D capsules rely on the meal consumed alongside them to provide this fat carrier. The MCT oil base in Vitamin D3 Drops provides the fat carrier directly within the formula, ensuring consistent, meal-independent absorption. This makes the drops more reliably absorbed than dry capsule or tablet formats, particularly for athletes who train fasted or have variable meal timing.

🎯 Goal guide

🏋️ Mass gain: 1 to 3 drops/day with a meal. Supports muscle function and recovery.

🔥 Weight loss / cutting: 1 to 3 drops/day. Fat-soluble vitamin often depleted during caloric restriction.

⚖️ Body recomposition: 1 to 3 drops/day. Supports muscle strength and immune resilience under high training load.

Serving suggestion

Take 1 to 3 drops (1000 to 3000 IU) per day, or the number of drops recommended by your physician based on blood test results. Administer drops onto a spoon or mix into food or a drink. Never administer directly into the mouth from the dropper. Always shake well before use. Take with a meal containing fat for optimal absorption, or rely on the MCT oil base in the formula if taking independently of a meal.

Best times to enjoy it

🍳 With breakfast The most practical and consistent daily habit. Taking vitamin D3 with the morning meal ensures it is paired with dietary fat and makes it easy to build into an existing routine.

🥗 With any main meal containing fat Vitamin D3 is fat-soluble. Any meal containing a source of fat (eggs, avocado, olive oil, nuts, dairy) provides the absorption environment needed for optimal uptake.

🌙 Avoid late evening intake Some research suggests vitamin D may interfere with melatonin production when taken in the evening. Morning or midday intake is generally preferred to maintain sleep quality.

❄️ Year-round, with increased consistency in autumn and winter Sun exposure in northern European latitudes (including Belgium) is insufficient to maintain adequate vitamin D levels from October through March. Consistent daily supplementation throughout this period is strongly recommended for all active individuals.

Daily protein target reminder

Vitamin D3 Drops is a micronutrient supplement, not a protein source. For training adaptations to fully materialise, adequate protein intake remains essential alongside micronutrient sufficiency. Current sports nutrition science recommends 1.6 to 2.2g of protein per kg of body weight per day for active individuals. For vegan athletes, targeting the upper end (1.8 to 2.2g/kg) is advised.

Goal-specific guidance

For weight loss / cutting: Vitamin D is stored in adipose (fat) tissue. During periods of significant fat loss, vitamin D stored in body fat is released into circulation, which can temporarily mask deficiency on blood tests. Conversely, individuals with higher body fat percentages may sequester more vitamin D in fat tissue, reducing its bioavailability. Active supplementation during a cutting phase ensures circulating levels remain adequate regardless of body composition changes.

For mass gain and body recomposition: Vitamin D sufficiency supports both muscle protein synthesis (via vitamin D receptor activity in muscle cells) and testosterone production. Ensuring adequate vitamin D status during a mass-gaining phase creates the hormonal and physiological environment in which anabolic training adaptations are most likely to occur.

🏅 Sport Nutrition "Did you know?"

Belgium sits at approximately 50 to 51 degrees north latitude — far enough north that the UV-B radiation needed for skin vitamin D synthesis is essentially absent from October through March, and insufficient from September through April for most people. Even in summer, athletes who train early in the morning or late in the evening, or who cover their skin with sun protection, receive far less UV-B than their latitude would suggest. A 25-hydroxyvitamin D blood test (available through a GP or sports medicine physician) is the only reliable way to know your actual vitamin D status — and for most Belgian athletes, supplementation is not optional but necessary.

Full ingredient list

Per drop: 1000 IU vitamin D3 (cholecalciferol from lanolin or wool wax); MCT oil; natural flavouring: cherry oil.

Key ingredient breakdown

Allergens and certifications

Allergens: No major allergens listed. Gluten-free and lactose-free confirmed. Always refer to the product label for the most current allergen information.

Certifications and characteristics:

• Informed Sport certified (batch-tested for 250+ prohibited substances)
• Gluten-free
• Lactose-free
• Not suitable for vegans
• Not suitable for vegetarians (lanolin-derived D3)

Nutritional values per drop

*NRV: Nutrient Reference Value

Dosing guide by daily drop count

Q1 — How do I know how many drops I need per day? The only accurate way to determine your optimal dose is a 25-hydroxyvitamin D blood test, available through your GP or sports medicine physician. Target blood levels for athletes are generally considered to be between 40 and 60 ng/ml (100 to 150 nmol/L), above the standard clinical sufficiency threshold of 20 ng/ml. If you are deficient (below 20 ng/ml), a physician may recommend a short-term higher dose (2000 to 4000 IU per day) before switching to a maintenance dose of 1000 to 2000 IU. Without a blood test, 1 to 2 drops per day is a reasonable general maintenance dose for most active adults in Belgium during autumn and winter.

Q2 — Why is liquid D3 in MCT oil better than a capsule or tablet? Vitamin D is fat-soluble, meaning it requires dietary fat to be absorbed effectively from the gut. Capsules and tablets rely on the meal consumed alongside them to provide this fat. If taken on an empty stomach or with a low-fat meal, absorption can be significantly reduced. The MCT oil base in Vitamin D3 Drops provides the fat carrier directly within the formula, ensuring consistent absorption regardless of meal timing or composition. Research comparing liquid oil-based vitamin D formats with dry capsule formats generally shows superior bioavailability for the liquid form.

Q3 — Is this product suitable for vegans? No. The vitamin D3 (cholecalciferol) used in this product is derived from lanolin, a waxy substance extracted from sheep's wool. While lanolin itself is not consumed by the animal and is a by-product of wool production, it is still an animal-derived ingredient. Vegan athletes should look for a vitamin D3 supplement derived from lichen (a plant-based D3 source), which provides the same cholecalciferol form without animal-derived ingredients.

Q4 — Can I take vitamin D3 alongside other supplements? Yes. Vitamin D3 combines well with the vast majority of sports nutrition supplements. One particularly important synergistic combination is vitamin D3 with vitamin K2 (MK-7): vitamin D3 increases calcium absorption from the gut, while vitamin K2 directs that calcium into bone tissue rather than allowing it to deposit in arterial walls. For athletes taking higher doses of vitamin D3 (2000 IU or more per day), pairing with a vitamin K2 supplement is frequently recommended by sports medicine practitioners.

Q5 — How long does one bottle last and how should I store it? At 1 drop per day, one bottle of 190 drops provides approximately 6 months of use. At 2 drops per day, approximately 3 months. At 3 drops per day, approximately 2 months. Store the bottle in a cool, dry place away from direct light and heat. Always shake well before use to ensure the vitamin D3 is evenly distributed throughout the MCT oil. Once opened, consume within the timeframe indicated on the packaging.