Description

Collagen Fit is an unflavored collagen powder designed with the toughest competitors in mind. With collagen peptides that promote joint health and the growth of lean muscle mass, plus nicotinamide riboside (NR) for cellular energy and cellular repair, Thorne’s newest collagen formula keeps you moving from morning to night. The unflavored formula mixes easily in a hot or cold beverage, allowing you to get your collagen your way – in your coffee, your smoothie, or your own beverage creation. 


A deeper look at the active ingredients in Collagen Fit:

Collagen Peptides

Thorne's Collagen Fit contains 15 grams of types I and III, grass-fed, hormone-free collagen per serving. Collagen is rich in the amino acids that function as the building blocks for the body’s bones, muscles, ligaments, tendons, skin, and other connective tissues.* Collagen peptides, also known as collagen hydrolysate, undergo a unique process that breaks collagen into shorter amino acid chains (peptides) that are easier to digest, as well as being free of the harsh chemicals used in other mainstream collagen products. 

Benefits of collagen peptides:

  • Nutrient support for joints, muscles, bones, and skin*
  • Improves activity-related or exercise-induced joint pain*
  • Promotes the growth of lean muscle mass*
  • Supports muscle repair and recovery*
  • Strengthens connective tissue*
  • Enhances skin, hair, and nail health*

 

Nicotinamide Riboside (NR)

Both normal aging and a modern lifestyle – lack of sleep, excessive stress, an unbalanced diet – lead to a declining level of NAD+ in the body. NR increases the body’s natural production of NAD+, a coenzyme that is a key component in the production of cellular energy.* 

Benefits of NR:

  • Boosts the natural production of NAD+ to resist the effects of aging*
  • Supports exercise efficiency – helping you reach your health and fitness goals*
  • Promotes healthy mitochondria, which enhances cellular energy production*
  • Supports the normal sleep-wake cycle*
  • Enhances cellular repair and metabolism*
  • Provides optimal benefit for athletes, competitors, and individuals seeking healthy aging support*

 

Betaine

A superior methyl donor, betaine, also known as trimethylglycine, supports the body’s natural methylation processes.

Benefits of betaine:

  • Improves NR function by providing methyl groups to enhance metabolism of NAD+*
  • Supports training and recovery*
  • Promotes lean body composition*
  • Helps maintain a healthy level of homocysteine in the blood, which promotes cardiovascular and cognitive health*


Because athletes need to know their supplements are trustworthy and compliant, every batch of an NSF Certified for Sport® product is tested for compliance with label claims and to ensure the absence of nearly 300 substances banned by many major athletic organizations.

Suggested Use:

Mix 1 scoop with at least 8-12 ounces of water or preferred beverage daily or as recommended by your health-care practitioner.

Warnings:

ALLERGY WARNING

This product is contraindicated in an individual with a history of hypersensitivity to any of its ingredients.

PREGNANCY

If pregnant, consult your health-care practitioner before using this product.

INTERACTIONS

There are no known adverse interactions or contraindications at publication date.

FAQs
Frequently asked question

Is Collagen Fit worth buying for active men who already take protein supplements?

Yes. Collagen Fit complements traditional protein supplements by targeting joint health and connective tissue repair — areas whey protein doesn't address as effectively. It also includes nicotinamide riboside (NR) for cellular energy and recovery. The unflavored formula stacks easily into your existing shakes or coffee without altering taste, making it a practical, low-friction addition to any serious fitness routine.

Where can I buy Collagen Fit and is it available with any guarantee?

Collagen Fit is available directly through Thorne's official website and authorized retailers. Purchasing from the official site ensures product authenticity and access to customer support. Thorne is known for its quality assurance and customer satisfaction policies, so we recommend checking the official site for current return or satisfaction guarantee details before purchasing.

What is nicotinamide riboside (NR) and why is it included in Collagen Fit?

Nicotinamide riboside is a form of vitamin B3 that supports cellular energy production and cellular repair. It boosts NAD+ levels in the body, which naturally decline with age and intense physical activity. Including NR in Collagen Fit helps athletes maintain energy at the cellular level, supporting endurance and recovery — making it more than a standard collagen supplement.

How do I use Collagen Fit and what does it mix with?

Collagen Fit is unflavored and dissolves easily in both hot and cold beverages. Simply add the recommended serving to coffee, a smoothie, water, or any drink of your choice and stir or blend. Its neutral taste won't alter your beverage's flavor, making it easy to incorporate into your daily routine without changing what you already enjoy drinking.

How does Collagen Fit support joint health specifically?

Collagen Fit contains collagen peptides — bioavailable forms of collagen that the body absorbs efficiently. These peptides provide the building blocks for cartilage, tendons, and ligaments, helping maintain joint flexibility and reduce discomfort from exercise-related wear. Regular use supports connective tissue integrity, which is especially important for high-impact athletes and those with demanding training schedules.

Can Collagen Fit help with lean muscle growth?

Yes. Collagen peptides in Collagen Fit contain key amino acids like glycine and proline that support muscle repair and the development of lean muscle mass. While collagen works differently than traditional muscle-building proteins, it plays an important structural role in muscle tissue. Combined with resistance training and proper nutrition, Collagen Fit can contribute meaningfully to a lean physique and overall body composition goals.

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