Collagen peptides

Garden of Life Grass Fed Collagen Peptides

by Garden of Life · Certification stack

Ranked #4$32.89

20 g grass-fed collagen per serving plus probiotics, Non-GMO Project Verified and NSF Certified Gluten-Free.

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Our assessment

20 g of grass-fed collagen per serving with Non-GMO Project verification and NSF gluten-free certification, at one of the lowest prices per gram on the list. The added probiotics are a marketing flourish rather than an evidence play (1.5 billion CFU is a modest dose, and no trial pairs probiotics with collagen endpoints), but they do no harm. A strong budget alternative when the Sports Research tub is out of stock.

What the evidence supports

Hydrolyzed collagen is the rare supplement-aisle product with randomized human trials behind specific claims: a 2021 meta-analysis of 19 RCTs found improved skin hydration and elasticity after roughly 90 days, and a 24-week randomized trial reported less activity-related joint pain at 10 g per day. The effects are modest, many trials are industry-funded, and the hair, gut and weight claims on most tubs outrun the data. We grade the full evidence file in our collagen peptides review; the short version is that skin and active-joint endpoints are earned, the rest is marketing.

Use, as reported in the trials

The published trials used 2.5 to 10 g daily for skin endpoints, 10 g for joint comfort, and 15 g in the muscle protocols paired with resistance training, taken for 8 to 24 weeks; nothing in the literature supports week-one effects. Timing is unstudied except for one pre-exercise protocol, so consistency beats clock-watching, and hot coffee does not degrade the peptides. Vitamin C is a genuine cofactor in collagen synthesis, so taking your scoop with a meal that includes some costs nothing. This is reported from the trials, not a prescription.

Where it ranks