DONA®

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DONA® is the original Crystalline Glucosamine Sulfate that has been shown effective in two 3-year controlled clinical studies. DONA helps maintain the normal function of cartilage and support healthy joint function, mobility and flexibility. Healthy cartilage allows you to keep doing the activities you love, such as walking, climbing stairs, swimming, running, and even the simple joy of picking up your child or grandchild.

DONA® has been shown effective in two 3-year controlled clinical studies⁰

  • Helps maintain the normal function of cartilage*
  • Supports healthy joint function*
  • Supports joint mobility and flexibility*
  • Clinical strength*

DONA® is available in a convenient, one-a-day dosage in 60 ct. bottles. DONA® is no longer available in powder. 

Directions for Use:
Take two caplets together daily with water or juice.

Recommendations:
Due to its mechanism of action, it may take 1-2 weeks, or possibly longer, to notice any effects. Optimal effects on joint health have been observed after 12 weeks of daily administration.*

Warnings:
Store in a cool, dry place. Keep out of the reach of children. As with any nutritional product, please consult your physician before taking. If you are pregnant or breast-feeding, ask you Doctor before taking. Use only as directed. Results May Vary. Glucosamine is derived from shellfish; if you are allergic to shellfish, please consult your doctor before taking.

What is Dona®?

Dona® contains crystalline glucosamine sulfate, a naturally occuring substace found in cartilage to cushion joints. Dona® helps in maintaining cartilage health so that you can actively participate in daily activities such as walking, climbing stairs, etc.

Dona® has been proven effective and safe in major clinical trials. It may promote cartilage health, lubricate joints, and support joint mobility and flexibility. Dona® can be taken with water or juice, with or without food and even in the morning or at night.

Dona Prescription

Dona® has been shown effective in two 3-year controlled clinical studies*

  • Helps maintain the normal function of cartilage*
  • Supports healthy joint function*
  • Supports joint mobility and flexibility*
  • Clinical strength*

Supporting Your Joints

The joint is made up of bone and cartilage, with the synovial fluid between the bones in the joints, aiding lubricantion, thereby helping in movement. As we age, there tends to be a decrease in the volume of the synovial fluid, which can lead to reduced joint comfort.

Supports Healthy Joint Function
Supports Healthy Joint Function*
Helps maintain the normal function of cartilage*
Helps maintain the normal function of cartilage*

Stay Active with Dona

As we age, the volume of fluid between our joints tends to decrease, thereby leading to joint discomfort. The everyday activities that you love, such as walking, climbing stairs, swimming, running, and even the simple joy of picking up your child or grandchild become more difficult.

Maintaining our joint health is key, and Dona® can help you do just that. Dona® helps maintain the normal function of cartilage and supports healthy joint function, mobility, and flexibility.

Playing TennisTasting VegetablesStretching on BridgeHiking Woods

The Original Glucosamine

Dona® is the original Crystalline Glucosamine Sulfate that has been shown effective in two 3-year controlled clinical studies. Dona® helps maintain the normal function of cartilage and supports healthy joint function, mobility, and flexibility. Healthy cartilage allows you to keep doing the activities you love, such as walking, climbing stairs, swimming, running, and even the simple joy of picking up your child or grandchild.

  • Sold in over 60 Countries as a Prescription.
  • Recommended by healthcare providers
  • Over-the-counter in the USA.
  • Millions sold around the world.
Doctor helping old lady with joints

Recommended by Doctors

Thousands of healthcare providers around the country recommend Dona to their patients to help manage joint health. With its extensive clinical research and proven safety profile, its an easy choice for both healthcare providers and customers.

How DONA® Works?

Dona® is made of Crystalline Glucosamine Sulfate, which is an important element of cartilage. Crystalline Glucosamine Sulfate works by activating the formation of the cartilage matrix, so as to increase joint fluid concentrations. When the cartilage matrix is formed, a space is created in the cartilage that, on compression, expands - making joint movement smooth.

Dona® may also aid in improving mobility and flexibility for better movement. Reduced cartilage can lead to tenderness, soreness, loss of flexibility, and decreased movement of the joints. Dona® can help support the remaining cartilage and encourage healthy joint function.

How Dona Works

Frequently Asked Questions

What is DONA®?

What is Glucosamine?

What is Crystalline Glucosamine Sulfate?

How Crystalline Glucosamine Sulfate Works?

When Should I Take DONA®?

How Does DONA® work?

Clinically Proven

Medical Practice

Dona® is the original Crystalline Glucosamine Sulfate that has been proven effective in major clinical trials. Below are some highlights:

  • Results of the first 3-year study were published in 2001 in The Lancet, a prestigious, international medical journal, and showed Crystalline Glucosamine Sulfate to be effective in improving and maintaining joint flexibility and cartilage health.
  • In 2002, a second 3-year study was published in the JAMA's Archives of Internal Medicine confirming previous findings and suggesting that Crystalline Glucosamine Sulfate could be used to help maintain and stabilize joint function and cartilage.
  • An 8-year observational study was later conducted on patients taking glucosamine sulfate for 3 years and 5 years off. It found that Glucosamine Sulfate not only was beneficial for joint health but it decreases the chance of total knee replacement by 73%.
  • In a 6-month controlled clinical trial called the GUIDE Trail, it showed that Glucosamine Sulfate's efficacy on knee symptoms was significantly better on all parameters as compared to placebo and acetaminophen.