The most common side effects of collagen supplements are mild digestive issues like bloating, diarrhea, or feeling overly full, often due to the body adjusting or the collagen not being fully broken down (hydrolyzed). Other less common issues can include skin rashes, allergic reactions (like itching or swelling), or potential concerns with heavy metals if sourcing isn't quality-checked, but overall, collagen is considered safe for most people, with serious issues rare.
Side effects of collagen
Some people have also reported that collagen supplements leave a lingering unpleasant taste in their mouth. Additionally, collagen supplements may cause digestive problems such as feeling full and heartburn. However, these supplements appear to be safe for most people.
Swelling and Itchiness: Early signs of excessive collagen often include swelling or an irritating sensation in the skin.
Yes, collagen supplements can cause constipation in some individuals, though it's not a universal experience. Research indicates that approximately 15-20% of collagen users report digestive issues, with constipation being one of the most common complaints alongside bloating and stomach discomfort.
Research Link is external, Link opens in new window shows that taking 2.5 to 15 grams daily of hydrolyzed collagen is safe. A smaller dose benefits your joints and skin, while a larger amount may help with body composition and muscle mass.
The first signs collagen is working are often subtle skin improvements like better hydration, increased suppleness, and softer fine lines, along with stronger, faster-growing nails, usually noticed within 4-8 weeks of consistent daily use, with joint flexibility and hair changes appearing later. These early signs include skin feeling plumper, eyes/mouth area fine lines softening, and nails becoming more resilient, setting the stage for longer-term benefits.
If you're using Collagen supplements, avoid these things for best results.
She presents a couple of options for setting daily reminders. On an empty stomach: Collagen is best absorbed in an acidic environment, so take it on an empty stomach first thing in the morning. If you're intermittent fasting, take it right after the fasting period and allow some time before breakfast.
However, the answer is no, collagen does not cause weight gain. The only way to gain weight is to consume more calories than you burn, and collagen is not high in calories. In fact, each serving of Absolute Collagen contains only 32 calories per 10ml serving.
It's important to monitor skin changes and seek medical advice if a change is noticed. In some individuals, collagen peptides can cause a slight increase in blood pressure. Those with existing hypertensive conditions should use such supplements with caution.
You may be wondering if collagen makes your joints hurt, but collagen probably isn't the cause. With rheumatoid arthritis (RA), uncontrolled inflammation damages cartilage, ligaments, and tendons, which causes joint pain.
Collagen is hydrophilic, meaning it attracts water, which is what causes bloating and diarrhea. Taking too much collagen, or taking a collagen protein that has not been hydrolyzed, is what can lead to gas or constipation. In either case, you are uncomfortable because your body cannot break down the protein fast enough.
Some people experience dizziness after taking collagen supplements.
Collagen can cause hypercalcemia. Hypercalcemia is an overaccumulation of calcium. Excessive calcium from collagen supplements often results in an abnormal heart rhythm.
Yes, marine collagen can potentially cause insomnia in some healthy individuals, particularly when taken late in the day or in high doses. The amino acid profile and protein content can stimulate metabolic processes that interfere with natural sleep onset mechanisms.
Allergic Reactions
Because some types of collagen are made of fish scales, collagen often triggers allergic reactions, particularly in a person who is sensitive to seafood. The allergic reactions include wheezing, itching on the skin, shortness of breath, headache, and fainting.
Collagen peptides, when paired with exercise, may support weight loss by reducing abdominal fat, promoting fat-free mass, and improving body composition. Collagen helps maintain lean muscle mass, alleviates joint pain for better mobility, and supports overall health, including skin, hair, and cardiovascular health.
Evidently, several dangers in excessive collagen consumption may affect the body's health, including:
Technically no, collagen will not make your breast any bigger. Having said that, although the supplement is unable to increase the size, collagen is able to improve the overall appearance of your breasts. It can do this by making your skin firmer, and youthful resulting in the breasts appearing plumper and lifted.
Five signs collagen is working include firmer, more hydrated skin with fewer fine lines, stronger and faster-growing nails, healthier and thicker-looking hair, less joint stiffness, and better gut health/recovery, with initial improvements often seen in skin and nails within weeks, while deeper benefits like joint support take longer.
Below are seven foods that are the best source of collagen.
Avoid collagen saboteurs: Sugar and ultra-processed foods (they trigger glycation, damaging existing collagen) Smoking + pollution (oxidative stress = collagen breakdown) Unprotected sun exposure (UVA rays are collagen's worst enemy)
Improved Joint Health: Collagen is a major component of joints and provides support and cushioning. Taking a collagen supplement along with vitamin D may help reduce joint pain and improve overall joint health.
Collagen peptides have been safely used in doses up to 10 grams daily for up to 6 months.