Vitamin K, chlorella and warfarin
Green vegetables contain vitamin K, and chlorella products can too. It matters with warfarin because changes in vitamin K intake can affect the medicine. Show your doctor or pharmacist the label itself before changing your supplement routine.
What do K1 and K2 mean?
A panel may use the broad name “vitamin K”. It may also identify a particular form. K1 and K2 belong to the same vitamin family, but they are separate label entries.
Look for these details together:
- Vitamin K: the broad name when the panel lists no separate form.
- Vitamin K1: also written as phylloquinone on some ingredient lists.
- Vitamin K2: also written as menaquinone, and some packs add a more specific form name.
- Amount and serving: most packs show this in micrograms for the serving defined on that pack.
The serving line matters. A figure per tablet is different from a figure per two tablets or per sachet. If the panel prints a percentage, it compares the stated serving with the reference used on that panel. It is not a personal instruction.
To compare two products, keep the form, amount and serving basis together. A large front-of-pack numeral cannot replace those three lines.
Where is vitamin K found?
Vitamin K occurs in green leafy vegetables. Kailan is a familiar example on a Singapore plate. Chlorella also contains vitamin K. These are food-source facts; they do not tell a person on warfarin what to eat or avoid.
Pack formats differ in how they describe the nutrient. A packaged food may show vitamin K within a nutrition panel. A supplement may place it in a nutrient table, an ingredient list or both. If the pack names chlorella without giving a vitamin K quantity, do not invent a number from another product. Species, serving and label format may differ.
Read the pack you are considering. Note the full product name, the stated serving and the exact wording around vitamin K. A clear phone photo is useful when the carton is awkward to carry.
Vplus® Formula contains Chlorella Sorokiniana, so vitamin K is one of the facts to raise with a doctor when warfarin or another blood thinner is involved. The carton and current medication list give the clinician the relevant context.
Why does consistency matter with warfarin?
Changes in vitamin K intake can affect warfarin. Most clinical advice focuses on a consistent intake rather than removing all green vegetables. Your prescriber can explain what that means for your usual meals and supplements.
Ask before starting or stopping a chlorella product, and do not change warfarin yourself. Other blood thinners do not all work through vitamin K, so the exact medicine matters.
What information should you bring?
Bring the full pack or clear photos, your medicine list, and a note of how often you eat green vegetables and take supplements. Include any recent change, whether you started something or stopped it.
If the label gives no vitamin K amount, tell the clinician that the label does not declare the figure rather than borrowing one from a different chlorella product. Indigo can help you check the product information available.
Product details: Vplus Formula: ingredients, pack details and directions.
Further reading: NIH guide to vitamin K.
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