Collagen is the most abundant protein in your body (it makes up about 30% of your total protein!).

Because of this, it’s often called the building block of your skin, muscles, bones, tendons, ligaments, and other connective tissues. It repairs several tissues in your body and plays a supportive role in skin health, bone mineral density, joint health, gut health, and more (2, 3, 4, 5).

Not all collagen is created equal. Before you buy just any collagen supplement, make sure you are choosing one that will help you feel (and look) your very best.

Collagen supplements can come from a variety of sources like bovine (cow), marine (fish), and even vegan options (yeast) (14). When it comes to bovine collagen, it’s essential that it’s grass-fed bovine.

Grass-fed cows are cows raised without antibiotics and hormones, and never fed genetically modified organisms (GMOs) (15).

Conventional beef is pumped with all kinds of chemicals like growth hormones (rBGH and rBST) and antibiotics that you shouldn’t be ingesting every day. 95% cows in the U.S. that are not 100% grass-fed are fed GMO corn (16).

To avoid these potential contaminants in your bovine collagen supplement, always look for “grass-fed” along with “non-GMO” on the label.

While there’s no set dosage for collagen, studies have confirmed that a 10 gram serving is ideal for your daily dose (17).

That said, there are several collagen supplements out there that offer a measly 2.5 or 5 grams of collagen per serving—barely enough to offer the transformational benefits that so many are after when taking collagen. (This is especially true for liquid collagen supplements.)

We recommend taking at least 10-20 grams of collagen peptides per day—and that’s if you’re just wanting to maintain collagen levels. If you’re 50 years old and just starting collagen, we recommend taking 40 grams of collagen for 8 weeks to replenish the collagen that you’ve lost over the years. And then lowering your daily dose back down to 20 grams.

Some research suggests that 2.5 to 5 grams is enough to notice changes in cellulite and skin elasticity, but not for more serious issues like sarcopenia (muscle loss due to aging), osteoporosis, or activity-related joint pain (18, 19, 20, 2).

Hydrolyzed collagen and collagen peptides both mean the same thing: that the collagen has gone through a process that breaks it down into smaller, ready-to-absorb amino acids that can easily be soaked up by your body. Put simply, collagen peptides require much less effort from your digestion and guarantees a more potent dose of collagen (6).

Non-hydrolyzed collagen, on the other hand, requires your digestive enzymes to work harder.

The easiest way to tell if a collagen powder is truly hydrolyzed is if it doesn’t clump when you add it to coffee, tea, or water.

The first thing you should do with any food, beverage, or supplement product is look at the ingredient label.

Many companies will throw in unnecessary filler ingredients like artificial flavors, colors, sweeteners, and more.

When it comes to artificial sweeteners, many companies will offer a “sugar-free” product, yet add harmful sweeteners like aspartame or sucralose.

When buying a collagen supplement, look for natural sweeteners like stevia and monk fruit. These come from plants and have the added benefit of acting as antioxidants in your body (25, 26).

Added sugars are everywhere. And the last place you need them are in your health supplements. As previously mentioned, stevia and monk fruit offer the sweetness of sugar—without the calories or blood sugar spike.

Another reason to take a look at the ingredient label on your collagen is to ensure that it's free of potential allergens. Ingredients like dairy, gluten, and soy are signs of cheap fillers that should be avoided.

Collagen can support your body in a myriad of ways—from skin to bone to gut health and more. And the purity of your collagen supplement depends on the quality of the collagen itself AND the other ingredients added.

In order to get the best collagen supplement, remember:

• Type 1 and Type 3 collagen are optimal.

• Non-GMO and grass-fed represent high quality..

• The serving size should be at least 10 grams.

• Hydrolyzed collagen is absorbed better by the body.

• Avoid artificial sweeteners, added sugar, allergens, and other fillers.

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