What is pureC4S?

PureC4S is a scientifically formulated liquid Chondroitin 4-Sulfate dietary supplement, empowered by a patented liposomal technology to maximize bioavailability and absorption. By effectively delivering the highest quality injectable-grade Chondroitin 4-Sulfate molecules to targeted areas of the system, PureC4S was specifically developed to:

  • Support normal inflammatory markers in the body
  • Benefit joint mobility
  • Encourage flexibility
  • Support joint structure and function
  • Optimize athletic performance
  • Promote healthy circulation
  • Assist recovery and healing processes

What's in pureC4S?


  • PureC4S comes ready-to-drink, in a 1 fl oz. Single-serving bottle.
  • All natural melon flavor.
  • PureC4S does not need to be stored in the fridge.
  • Simply shake gently, open, and drink!

Why is pureC4S unique?

PureC4S is scientifically formulated to produce effective, powerful, and lasting results... FAST!

Why does pureC4S work?

The PureC4S Liposome: Nature's Perfect Delivery Package

What are Liposomes?
Liposomal Delivery in Action

Our liposomes are always:

How do I know how much to take?

Get answers to your most frequently asked questions.

Based on the guide below, choose the program you feel is right for you to meet your individual goals.

PureC4S was formulated to support individuals of all ages but is not intended for pregnant or nursing women. Those under 18 years of age should consult their qualified healthcare provider prior to use.
PureC4S is a dietary supplement with all-natural active ingredients and does not require a prescription.
PureC4S is a liquid that is consumed from a 1 fl oz. (29.5 mL) bottle.
PureC4S is intended to begin with a 4-dose or 8-dose Loading Series. Consume one dose every four days to complete the initial loading protocol. Follow with the Maintenance Protocol recommended for your individual needs, as outlined on this page.
Each bottle of PureC4S is intended as a single-dose serving and should be consumed entirely within 24 hours after opening.
No. The PureC4S 4-dose Loading Protocol is designed to encompass a 16-day period to promote the best possible results. However, in the event you are a few days late with a dose, simply take it as soon as possible. Continue with the remaining doses in four-day intervals until the 4-dose Loading Series is completed. Follow with appropriate Maintenance Protocol for your individual needs.
PureC4S should be taken with a small meal or snack.
Human beings are born with chondroitin throughout the body, as it is a critical component to the formation and maintenance of healthy joints. Chondroitin 4-Sulfate can be ingested in an effort to replenish the body's levels of chondroitin, and if it passes through the stomach without degradation it can be absorbed into the portal vein through the small intestines. It is then taken to the liver and distributed throughout the body. PureC4S was specifically designed to ensure our Chondroitin 4-Sulfate molecules arrive into the intestinal system intact, despite the acidic and degrading nature of the stomach, to maximize bioavailability and efficacy.
No. PureC4S is all-natural and contains no artificial sweeteners.
The flavor of PureC4S is best described as melon.
PureC4S can be mixed with juice; it is not recommended to be mixed with alcohol or soda.
All ingredients in our PureC4S product are sourced within the USA except for the bovine cartilage from which our pharmaceutical-grade Chondroitin 4-Sulfate molecules are derived (South America), and the liposomal carrier molecules fundamental to our PureC4S formulation (Spain).
The shelf life of PureC4S is 1 year.
Normal ambient temperatures will not affect the life or quality of the product. However, freezing PureC4S is not recommended.
No. Refrigeration or temperature fluctuations will not affect the longevity of PureC4S.
It is recommended that the entire contents of the bottle be consumed within 24 hours after opening.
It is recommended to shake the PureC4S bottle gently before drinking.
Yes. PureC4S comes in a convenient 1 fl oz. (29.5 mL) glass bottle that is TSA-compliant and can be brought as a carry-on.
Yes, there is an instruction sheet in the Loading Series box.
Although there are no ingredients in PureC4S known to be damaging for dogs, PureC4S is specifically formulated for human use.

If you are not satisfied with the PureC4S product, please reach out to us for a refund. The Eternapure Satisfaction Guarantee is valid only for first-time purchasers of PureC4S 4-Dose or 8-Dose Loading Series, purchased directly though the Eternapure.com website, and is redeemable within 30 days of purchase. Value Packs, Subscriptions, and shipping costs are non-refundable. Offer only applies to first purchase of PureC4S 4-Dose or 8-Dose Loading Series and excludes additional quantities.