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Maximum D3 13,000 IU Vitamin D3 Supplement – 5 Capsules (5-Week Supply)

Maximum D3 13,000 IU Vitamin D3 Supplement – 5 Capsules (5-Week Supply)

Regular price $41.99 AUD
Sale price $41.99 AUD Regular price
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Maximum D3 13,000 IU Vitamin D3 Supplement – 5 Capsules (5-Week Supply)

Regular price $41.99
Sale price $41.99 Regular price
Save % Sold out
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Understanding High-Dose Vitamin D3

Vitamin D3, known scientifically as cholecalciferol, is the most bioavailable form of vitamin D. Your skin naturally produces it when exposed to sunlight. Compared to vitamin D2 (ergocalciferol), D3 is far more effective at raising and maintaining blood levels of 25-hydroxyvitamin D. Maximum D3 delivers 13,000 IU per capsule – considerably higher than the typical daily recommendation of 600–800 IU for most adults. This high dose is intended for weekly use, helping to correct or maintain optimal levels, especially in those with known deficiency or increased requirements. Always consult your healthcare professional to determine the right dosage based on your blood levels.

Key Benefits of Maximum D3

  • Bone Health Support: Vitamin D3 helps regulate calcium and phosphorus absorption, essential for strong bones and teeth. Adequate levels may reduce the risk of bone loss and fractures as you age.
  • Immune System Function: Vitamin D plays a key role in modulating immune responses. Research suggests optimal levels may help support your body's defence against seasonal illnesses.
  • Calcium Absorption: Without enough vitamin D, your body cannot absorb calcium efficiently. This synergy is crucial for bone mineralisation and overall skeletal health.
  • Muscle Function: Vitamin D receptors are found in muscle tissue, and adequate levels may help maintain muscle strength and reduce the risk of falls in older adults.

These benefits are based on generally accepted health claims. Individual results may vary.

Who May Benefit from Weekly Vitamin D Supplementation?

High-dose weekly vitamin D3 is particularly suited for people who:

  • Have limited sun exposure (e.g. living in southern regions, working indoors, or covering up for sun safety)
  • Have darker skin, which requires more sun exposure to produce adequate vitamin D
  • Are older adults, as skin synthesis efficiency declines with age
  • Have conditions that affect absorption, such as Crohn's disease or coeliac disease
  • Follow a vegan diet (note: the vitamin D3 in Maximum D3 is typically from lanolin; if vegan, look for a lichen-based alternative)

If you suspect a deficiency, a simple blood test can help guide your supplementation needs. Always talk to your healthcare provider before starting a high-dose regimen.

How to Use Maximum D3 for Optimal Results

Take one capsule once a week, preferably with a meal containing fat to improve absorption – vitamin D is fat-soluble. Consistency is key: add it to your weekly routine, like every Sunday with breakfast. Each pack contains 5 capsules, providing a 5-week supply. Store in a cool, dry place away from direct sunlight. Do not exceed the recommended dose unless directed by a healthcare professional.

What Sets Maximum D3 Apart?

Maximum D3 stands out for its high potency and convenience. With 13,000 IU per capsule, it offers a simple weekly dosing schedule that eliminates the need to remember daily pills. The formula is Non-GM, gluten free, and free from common allergens. Manufactured in the USA in facilities following good manufacturing practices (GMP), it assures quality and purity. Plus, the compact packaging is travel-friendly, making it easy to stick to your regimen on the go.

Why Choose Maximum D3?

Vitamin D deficiency is more common than you might think, especially for those with limited sun exposure or darker skin tones. Maximum D3 delivers a potent 13,000 IU (325 mcg) of vitamin D3 per capsule in a convenient once-weekly format. This high-potency formula is designed to help maintain healthy vitamin D levels, supporting bone health, calcium absorption, and immune function. Each pack contains 5 capsules – a full 5-week supply – making it easy to stay consistent. Non-GM, gluten free, and manufactured in the USA, Maximum D3 is a reliable choice for an effective vitamin D supplement.

Safety and Precautions

Vitamin D is generally safe when taken as directed. However, excessive intake can lead to toxicity, characterised by hypercalcaemia (high blood calcium). Symptoms may include nausea, vomiting, weakness, and kidney stones. The tolerable upper intake level for adults is 4,000 IU per day (or 28,000 IU weekly). Maximum D3 provides 13,000 IU per week, well below this upper limit. Nonetheless, individuals with certain conditions (e.g. sarcoidosis, kidney disease) or those taking medications affecting vitamin D metabolism should consult a healthcare professional before use. Always read the label and follow the directions for use. Keep out of reach of children.

These statements have not been evaluated by the TGA. This product is not intended to diagnose, treat, , or prevent any disease.

Worldwide Delivery

Vitamins4Australia offers free shipping to Australia & the US on every order, with no minimum spend required. Most orders are delivered within 2–7 business days after dispatch, and tracking details are sent by email once the order leaves fulfilment.

Returns and support

Vitamins4Australia offers straightforward post-purchase support with a clear returns process. Please check the store returns policy before sending an item back, as final eligibility may depend on product condition, packaging integrity and whether the return request is started within the stated return window.

How to choose

Use the product description, ingredient list, serving information and available variants to compare supplement options. Always check the full ingredient list, directions for use and any allergen information on the product packaging before taking any food supplement.

Ingredients and important information

Ingredient lists and formulations may vary by batch or supplier. Always check the product packaging for the most up-to-date information. Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle. Do not exceed the recommended daily intake. If you are pregnant, nursing, taking medication or have a medical condition, consult your healthcare professional before use.

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  • Free standard deliveryUsually 2–7 business days to Australia, after 1–3 days to prepare
  • 30-day returnsOn unopened items in original packaging
  • Secure checkoutProcessed by Shopify with major cards accepted
  • Real supportEmail or phone, answered by our team

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Buying guide and questions

Supplement guide

Maximum D3 13,000 IU Vitamin D3 Supplement – 5 Capsules (5-Week Supply) at Vitamins4Australia

Understanding High-Dose Vitamin D3Vitamin D3, known scientifically as cholecalciferol, is the most bioavailable form of vitamin D. Your skin naturally produces it when exposed to sunlight. Compared to vitamin D2 (ergo...

Category Vitamins & Supplements > Vitamin D
Delivery area Worldwide
Checkout Secure checkout
Brand Maximum D3
Price $41.99
Availability In stock
000 IU135-Week SupplyBone HealthCalcium AbsorptionCholecalciferolGluten-FreeHigh Potency Vitamin DImmune SupportMade in USA

How to choose if this supplement fits your routine

Read the ingredient list, check the serving size and directions for use. Consider the supplement form (tablet, capsule, liquid) and whether it suits your dietary requirements. Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle.

Questions about Maximum D3 13,000 IU Vitamin D3 Supplement – 5 Capsules (5-Week Supply)

Is Maximum D3 13,000 IU Vitamin D3 Supplement – 5 Capsules (5-Week Supply) available worldwide?

Yes. This product is currently available on Vitamins4Australia with free shipping to Australia & the US.

How should I compare this with similar supplements?

Compare the active ingredients, serving size, number of servings per container, supplement form, brand reputation and price per serving. Check allergen information if relevant to your dietary needs.

Where can I find delivery and returns information?

Delivery information is shown near the add to cart area. Returns guidance is available on the product page and full terms are covered in the store returns policy.