Quick answer
For Vitamin D3 + K2, check the ingredient list, allergen statement, dose per serving, medication cautions, and any condition-specific warnings. Side effects can vary by person and by product format.
Check these first
Ingredient risks: Vitamin D3, Vitamin K2 · Form and serving: Softgel, 1 softgel · Price context: $0.18 per serving estimate at last check; retailer prices can change.
Label check
Side effect checklist
- Active ingredients: confirm Vitamin D3, Vitamin K2 and the amount per serving rather than relying on the front label.
- Serving context: compare Softgel and 1 softgel with how often the label says to use it.
- Allergens and inactive ingredients: check flavors, sweeteners, capsules, gelatin, oils, dairy, soy, gluten, fish, or shellfish when they matter to you.
- Overlap: count similar ingredients from multivitamins, powders, blends, gummies, drinks, and topical products before adding another product.
- Check total daily intake from all supplements, high-dose warnings, kidney stone history, calcium level context, and K2 or blood thinner cautions when relevant.
- More is not automatically better. Dose, lab context, and overlapping products matter.
Before using
Most likely label issues
Label cautionsCheck K2 suitability if using anticoagulants. Check total vitamin D intake across supplements, multivitamins, and fortified foods. High-dose context: Avoid stacking multiple D3 products unless total daily intake has been checked.
Allergy checkCheck capsule ingredients such as gelatin, lanolin-derived D3, soy, or other excipients if sensitive.
Medication contextVitamin K2 may require caution for people using warfarin or other anticoagulant therapy.
Condition contextKidney disease, high calcium, hyperparathyroidism, or sarcoidosis may require professional guidance. Pregnancy/Breastfeeding: Ask a healthcare professional before changing vitamin D intake during pregnancy or breastfeeding.
Safety signals
When to stop and get help
- Get urgent help for trouble breathing, facial or throat swelling, severe hives, fainting, chest pain, or a severe allergic reaction.
- Stop using the product and contact a clinician if you notice a severe rash, persistent vomiting, severe diarrhea, black or bloody stool, yellowing skin, or unusual weakness.
- For topical products, stop and seek help if scalp or skin irritation becomes severe, spreads, blisters, or involves the eyes.
- For children, pregnancy, breastfeeding, major medical conditions, or multiple medications, use clinician guidance before relying on a supplement label alone.
This page is educational and does not replace care from a qualified clinician.
Product context
Why side effects can differ
Vitamin D3 + K2 is a Vitamin D product from Sports Research. Side effects can depend on dose, form, inactive ingredients, allergies, medication use, health conditions, and whether you use similar products at the same time.
Price context: $0.18 per serving estimate at last check; retailer prices can change.
Ingredients and goals
Follow the ingredient, then the goal
Connected ingredients: Vitamin D3, Vitamin K2. Connected goals: Bone Health, Daily Maintenance.
Safety notes
Known cautions from the product record
- Check K2 suitability if using anticoagulants.
- Check total vitamin D intake across supplements, multivitamins, and fortified foods.
- Medication: Vitamin K2 may require caution for people using warfarin or other anticoagulant therapy.
- Condition: Kidney disease, high calcium, hyperparathyroidism, or sarcoidosis may require professional guidance.
- Allergy: Check capsule ingredients such as gelatin, lanolin-derived D3, soy, or other excipients if sensitive.
- Possible side effect: Excessive vitamin D intake can contribute to high calcium symptoms such as nausea, thirst, or weakness.
- Dose: Avoid stacking multiple D3 products unless total daily intake has been checked.
- Pregnancy/Breastfeeding: Ask a healthcare professional before changing vitamin D intake during pregnancy or breastfeeding.
- Ingredient context: Avoid excessive intake; lab context may matter.
Label Check
- Last checked
- 2026-07-27
- Next check
- 2026-08-26
- Source
- Product label snapshot
- Label confidence
- Label check needed
Shown fields
Brand, Product Name, Category, Dosage Form, Serving Size, Ingredient Links, Safety Structure
Can change
Price Per Serving, Availability, Servings Per Container, Label Warnings, Testing Claims
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