How much collagen per day? There is no official daily requirement, but most human studies on collagen peptides have used between 2.5 and 15 grams a day, taken for at least eight weeks. Lower amounts in that range have mostly been studied for skin, middle amounts for joints and connective tissue, and the highest amounts alongside strength training. The right number for you depends on your goal, the form you prefer and what the label on your product directs. Here is how to read the research and the labels.
Key takeaways
- There is no official daily requirement for collagen, and no RDA.
- Most human studies on collagen peptides have used between 2.5 and 15 grams a day, taken for at least eight weeks.
- Powders usually deliver several grams per scoop; capsules usually deliver well under a gram each.
- Collagen counts toward your protein intake, but it is not a complete protein, so it does not replace other protein foods.
How much collagen per day do studies use?
Collagen research uses hydrolyzed collagen peptides, the same form found in most supplements. Because study goals differ, so do the amounts:
| Area studied | Daily amounts often used | Typical study length |
|---|---|---|
| Skin elasticity and hydration | 2.5 to 10 g | 8 to 12 weeks |
| Joint comfort with activity | 5 to 10 g | 3 to 6 months |
| Muscle and strength training | around 15 g | 12 weeks with training. |
A few examples from the research:
- In a 2014 trial, women aged 35 to 55 taking 2.5 g or 5 g of collagen peptides daily for eight weeks showed improved skin elasticity compared with placebo.
- A 2008 study in athletes used 10 g a day for 24 weeks and looked at joint comfort during activity.
- A 2015 study in older men with sarcopenia (age-related muscle loss) paired 15 g a day with a 12-week resistance training program and measured changes in body composition and strength.
- A 2023 meta-analysis of 26 randomized trials reported improvements in skin hydration and elasticity with hydrolyzed collagen compared with placebo.
These are study amounts, not prescriptions. They tell you the range researchers have found reasonable to test.
Does the form change how much collagen you get?
Yes, a lot. Collagen is measured in grams, and a capsule can only hold so much powder. Here is how the two common formats compare:
- Powders usually deliver 5 to 20 g per serving, because you are stirring scoops into a drink.
- Capsules usually deliver about 0.5 g each, so a serving of three to six capsules lands roughly in the 1.5 to 4 g range.
Both are valid. A powder makes it easy to reach the higher amounts used in joint and training studies; capsules are portable and tasteless, and they suit people who prefer not to mix a drink. Our guide to collagen powder vs capsules covers the trade-offs in more detail.
How much collagen is in our two formulas?
Each label sets its own serving, and that is the amount to follow:
- Collagen Powder+: two scoops (20 g) once a day, with 20 g of bovine collagen peptides, 90 mg of hyaluronic acid and 30 mcg of biotin. One 560 g container lasts 28 days.
- Collagen Complex+: one to two servings a day, where one serving is three capsules. Collagen Complex+ provides 1,800 mg of multi-source collagen at one serving, or 3,600 mg at two. It contains fish (cod) and egg, in a gelatin capsule.
Whichever you choose, take it every day. Collagen support builds gradually, and most routines give it about two months before judging.
Is collagen a good protein source?
Collagen peptides are protein, and they count toward your daily protein total. A two-scoop serving of Collagen Powder+ provides 18 g of protein. But collagen is not a complete protein: it lacks tryptophan, one of the essential amino acids. Think of it as an addition to eggs, fish, poultry, dairy, legumes and other protein foods, not a replacement. If you track protein, our guide to how much protein you need per day can help you fit collagen into the total.
Can you take too much collagen?
Collagen peptides are generally well tolerated in the amounts used in studies. The most common complaints at higher intakes are a feeling of fullness or mild digestive upset. A few practical cautions:
- Follow the label serving rather than stacking several products.
- Check allergens. Marine collagen is out for fish allergies, and some blends contain egg.
- Add up the extras. Many collagen products include biotin, vitamin C or other nutrients; count them alongside your multivitamin.
- Ask first if you are pregnant, nursing, managing a medical condition or taking medication, or if your clinician has asked you to limit protein.
What helps your body use collagen?
Your body builds its own collagen from amino acids, and it needs vitamin C to do it. A diet with fruit and vegetables, enough overall protein, sleep and sun protection all matter as much as any supplement. Every batch of our collagen products is third-party tested for purity and potency, and manufactured in an NSF-certified, GMP-certified, FDA-registered facility in the USA with globally sourced materials. See our standards.
Frequently asked questions about how much collagen per day
Is 10 grams of collagen a day enough?
Ten grams sits in the middle of the range used in studies on skin and joints. Whether it suits you depends on your goal and the product's label. More is not automatically better.
Is 20 grams of collagen a day too much?
Twenty grams is above most study amounts but is a common powder serving, and collagen peptides are generally well tolerated. Count it toward your protein total, and talk to your clinician if you have been told to limit protein.
How many collagen capsules equal one scoop of powder?
It depends on the products, but capsules usually hold about half a gram each and a powder scoop several grams. Reaching the amount in a large powder serving would take many capsules, which is why powders suit higher intakes.
When is the best time of day to take collagen?
No time of day has been shown to work better. Choose a time you will keep every day, such as with breakfast or in a morning coffee.
How long should I take collagen before judging it?
Most skin studies ran eight to 12 weeks, and joint studies ran longer. Give a steady daily routine at least two months.
Related reading from our Wellness Hub
- Do Collagen Supplements Actually Work? What the Research Says
- How to Take Collagen Powder: Mixing, Timing and a Daily Routine
Sources
- Proksch E et al. Oral supplementation of specific collagen peptides has beneficial effects on human skin physiology. Skin Pharmacology and Physiology, 2014.
- Clark KL et al. 24-week study on the use of collagen hydrolysate as a dietary supplement in athletes with activity-related joint pain. Current Medical Research and Opinion, 2008.
- Zdzieblik D et al. Collagen peptide supplementation in combination with resistance training. British Journal of Nutrition, 2015.
- Pu SY et al. Effects of oral collagen for skin anti-aging: a systematic review and meta-analysis. Nutrients, 2023.
Individual results vary.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
