How Much Collagen Should You Take Per Day?
Scarlett Gray
BNutrDiet (Hons), APD, SDA
Accredited Practising Dietitian with Dietitians Australia (APD200526). Accredited Sports Dietitian and Credentialled Eating Disorder Clinician. First Class Honours in Nutrition and Dietetics from the University of Newcastle.
How much collagen per day do you actually need?
The collagen supplement market is full of products delivering vastly different doses — from 1,000mg to 15,000mg per serving. Knowing the right daily dose matters, because the clinical research on collagen is dose-specific: taking less than the evidence-backed amount means weaker results or no results at all. This guide explains how much collagen you need per day, what the research says, and why most supplements fall short. For the complete guide to choosing the right liquid marine collagen, read our best marine collagen UK guide.
What does the research say about collagen dosage?
Multiple peer-reviewed clinical trials have investigated the optimal dose of collagen peptides. The picture that emerges is consistent on a few key points:
- When you consume hydrolysed collagen, it's broken down in the gut into small peptides and free amino acids — particularly glycine and proline
- These are absorbed into the bloodstream and provide the raw materials fibroblasts use to build new collagen
- Dose matters: evidence supports 10g (10,000mg) per day for skin, with the joint research using a higher 5-15g range
- Timing matters too — clinical trials typically run over 8-12 weeks of consistent daily use to demonstrate effects
A recent systematic review and meta-analysis of collagen supplements and skin outcomes supports this picture. Studies using lower doses of 2,500 to 5,000mg show weaker and less consistent results across the same timeframes, which is part of why so many lower-dose products on the market struggle to demonstrate the benefits they advertise.
How much collagen per day by goal
The table below reflects the doses used in the published clinical research. Hair and nail timelines are based on a combination of customer reporting and the early research in those areas — both are still emerging, but the doses studied so far appear to align with the skin research.
| Goal | Studied dose | Timeline for results |
|---|---|---|
| Skin hydration and elasticity | 10g (10,000mg) daily | 4 to 8 weeks |
| Fine line and wrinkle appearance | 10g (10,000mg) daily | 8 to 12 weeks |
| Hair condition* | ~10g daily (similar to skin) | 8 to 12 weeks |
| Nail strength* | ~10g daily (similar to skin) | 4 to 8 weeks |
| Joint comfort | 5g to 15g daily | 12 to 24 weeks |
*Research on hair and nails is still emerging. The doses used in published studies so far appear to align with the skin research, which is why we list them at the skin dose for now.
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Shop Liquid Collagen →How much collagen per day for a woman?
The clinical trials showing skin and joint benefits from collagen supplementation are predominantly conducted in women, and the studied dose is 10g (10,000mg) daily. There is no separate dosing recommendation for women specifically.
That said, the forties and fifties are often when collagen supplementation becomes more focused on repair and maintenance rather than prevention. Research on menopause and skin shows there can be a notable decline in collagen during this stage, especially for women approaching or going through menopause. Consistent daily supplementation at the studied dose may support skin, hair and connective tissue through these years.
For women navigating menopause who want additional support for hormonal balance, energy and sleep alongside marine collagen, read about Kollo Balance+ — our daily liquid menopause formula combining 12 active ingredients including KSM-66 ashwagandha, lion's mane and red clover.
Does the type of collagen affect the dose?
Source matters alongside dose. Marine collagen is predominantly Type I — the dominant type in human skin — and is commonly produced as low molecular weight peptides that are easily absorbed after digestion. Studies have shown marine collagen-derived peptides can enter the bloodstream and reach connective tissues including skin and cartilage, with reported bioavailability up to 1.5x higher than bovine. There is also more published research on marine collagen than on other sources.
Bovine collagen peptides are larger than marine peptides, which only slightly affects absorption — properly hydrolysed bovine collagen is still absorbed and used by the body. For the full comparison, read our marine collagen vs bovine collagen guide.
When should you take your daily collagen?
The most important factor is consistency. The research has not shown a clear advantage to taking collagen at a specific time of day, so you can take it whenever it best fits your routine. A few practical options:
- Pick a timing you'll actually remember — first thing with water or coffee in the morning is the easiest habit for most people
- Some prefer to take it with food, particularly food containing vitamin C
- Whatever you pick, take it at the same time each day
Kollo liquid sachets require no preparation — tear, drink, done. Read our full guide to how long marine collagen takes to work for more on optimising your results.
Frequently Asked Questions
How much collagen per day do I need?
For skin outcomes, the clinical research consistently uses 10g (10,000mg) of hydrolysed collagen peptides per day. For joint outcomes, the published range is wider — 5g to 15g per day. Most supplements deliver only 2,500 to 5,000mg, which is below the dose used in skin research. Kollo Premium Liquid Marine Collagen delivers 10,000mg of Naticol® certified marine collagen peptides per daily sachet.
How much collagen per day for a woman?
The studied daily dose is 10g (10,000mg) of hydrolysed marine collagen peptides. Clinical trials on skin and joint benefits are predominantly conducted in women and consistently use this dose. Women approaching or going through menopause may particularly benefit from consistent daily supplementation, as collagen decline is more pronounced during this stage.
Is 5,000mg of collagen per day enough?
For skin outcomes, 5,000mg is below the dose used in the clinical research showing measurable improvements — that research consistently uses around 10g (10,000mg) per day. For joint outcomes, 5,000mg sits at the bottom of the studied 5-15g range. Higher consistent doses align more closely with the published evidence base.
Can you take too much collagen per day?
Collagen is a food-derived protein and is generally well tolerated at standard supplement doses. The published joint research extends up to 15g per day without harm reported. If you have any health concerns or are taking medication, consult your GP before starting a new supplement.
Kollo Health was co-founded by Jenni Falconer — TV presenter, Smooth Radio breakfast host, ten-time London Marathon runner and host of the RunPod podcast. Read her story and why she created Kollo.
