Life Extension Super K: Vitamin K1 + K2 Complex (2000 mcg K1 + 1180 mcg K2) in a Gluten-Free Softgel
Gluten-free labeling exists in product data and retailer snippets; however, full facility/cross-contact details are not disclosed in the provided data.
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- High total vitamin K delivery (K1 + two forms of K2) per serving
- Gluten-free labeling appears in multiple data sources
- Positive reviewer sentiment on quality and value
- Bottle consistency issues reported by some users
- Mixed reports of stomach reactions
Gluten safety details
Gluten-free labeling exists in product data and retailer snippets; however, full facility/cross-contact details are not disclosed in the provided data.
What to expect
A single softgel per day delivering a high combined dose of vitamin K1 and two forms of vitamin K2, aimed at supporting heart/arterial health and calcium handling. Gluten-free labeling is present in some sources, but full ingredient details and cross-contact/facility information are not provided. Users should expect potential variability in capsule quality (stickiness) and mixed digestive responses according to reviews.
- Support for heart/arterial health
- Calcium balance and bone-supporting vitamin K intake
- Individuals seeking vegan-friendly capsules (unclear capsule composition)
- Those wanting detailed cross-contact/facility transparency from the product page
The full guide
What is Life Extension Super K?
Life Extension Super K is a once-daily softgel supplement formulated to deliver a total of 2000 mcg of vitamin K1 and 1180 mcg of vitamin K2 in each serving, with two forms of K2 included. The product is marketed for heart/arterial health and calcium handling, and the bottle shown in available data contains 90 softgels. Some retailer listings note gluten-free labeling, while the provided data does not include full ingredient details or facility information.
Gluten safety and labeling
Gluten-free labeling appears in product data and retailer snippets, suggesting suitability for many individuals avoiding gluten. However, the data do not provide a complete ingredient list or explicit cross-contact or shared-facility information. The gluten-free status is labeled in multiple sources, but formal third-party certifications are not documented in the supplied evidence.
Pros and cons for gluten-free shoppers
Pros include a high total vitamin K delivery per serving (K1 plus two forms of K2) and positive notes about quality and value from reviewers. The product is described as gluten-free in several listings, which can be convenient for those following a gluten-free diet. Cons include reports of bottle consistency issues (capsules sticking together) and mixed stomach tolerability among buyers.
What to expect in use
Each daily softgel is designed for convenient, once-daily dosing. Users can expect a high combined dose of vitamin K, which may support arterial health and calcium management. Taste and texture are generally associated with standard softgels; some buyers report capsules sticking together, and digestive responses vary among individuals.
Who it’s best for and considerations
Best for people seeking a combined K1 + K2 approach with a focus on heart health and calcium balance, in a gluten-free labeled product. Not ideal for those who need vegan-friendly capsules (capsule composition isn’t clearly disclosed) or for shoppers requiring detailed cross-contact/facility transparency on the product page.
What shoppers say
💚 People liked
Perceived good quality and effectiveness
Easy to swallow softgels
Good value for a multi-form vitamin K product
Contains K1 plus two forms of K2 for comprehensive vitamin K coverage
⚠ People flagged
Capsules may stick together in the bottle
Some buyers experienced stomach-related issues
Key takeaways
- Look for gluten-free labeling, but verify current ingredient details if gluten intolerance is severe.
- This product provides a high total vitamin K dose per day with three forms (K1 + two K2 forms).
- Be aware of potential bottle stickiness and varied digestive responses noted in reviews.
- Price per softgel is around $0.24; evaluate value against other K products you’re considering.
Evidence gaps for this product:
- Full ingredient list not provided in the supplied data
- No explicit third-party gluten-free certifications documented (GFCO/NSF) beyond retailer labeling
- Cross-contact/facility information not disclosed