Does taking collagen have any side effects?

Collagen offers many health benefits and very few known risks. This supplement may improve skin health by reducing wrinkles, helping to increase muscle mass, preventing bone loss, and reducing joint pain.

Collagen is the most abundant protein in the body, it is the main component of the connective tissues that make up several body parts, including tendons, ligaments, skin and muscles. Collagen provides structure to the skin and strengthens bones. Most supplements with collagen are hydrolyzed for easier absorption. There are also some foods you can eat to boost your collagen levels, including pork skin and bone broth.
2. Effects of collagen 2.1 Can improve skin health Collagen has a great effect on strengthening the skin, in addition can be beneficial for elasticity and hydration. The body produces less collagen as it ages and causes the skin to dry out and form wrinkles. Collagen peptides can help slow down the skin aging process.
The study found that daily collagen supplementation for 12 weeks increased skin moisture and reduced wrinkle depth significantly compared to a control group. The wrinkle-reducing effects of collagen supplements are attributed to their ability to stimulate the body to produce its own collagen.

2.2. Helps relieve joint pain Collagen acts like rubber to protect joints. Collagen levels decrease as the body ages, and the risk of developing degenerative joint disorders such as osteoarthritis increases. Supplementing with collagen can help improve symptoms of osteoarthritis and reduce overall joint pain.
2.3 Can Prevent Bone Loss Collagen helps give structure and helps keep bones strong. As the body ages, the amount of collagen also decreases and leads to conditions like osteoporosis. Supplementing with collagen may help inhibit the bone breakdown that leads to osteoporosis.
2.4 May increase muscle mass A large percentage of muscle tissue is made up of collagen, which helps to increase muscle mass in people with myasthenia gravis, the loss of muscle mass that occurs with age. If taking 15 grams of collagen combined with daily exercise for 12 weeks, muscle mass and strength will be increased.
2.5 Promotes Cardiovascular Health Supplementing with collagen can avoid the risk of cardiovascular diseases. Collagen provides structure for arteries, which are the blood vessels that carry blood from the heart to the rest of the body. With a lack of collagen, the arteries can become weak and cause atherosclerosis and potentially lead to heart attacks and strokes.

2.6 Other Health Benefits Collagen supplements may have other health benefits, but they have not been studied extensively. While these potential effects are promising, more research is needed before formal conclusions can be drawn.
Eczema (atopic dermatitis). Early research shows that taking collagen peptides for 12 weeks might improve the symptoms and severity of eczema. But not all collagen peptides seem to be helpful:
Diabetes: Early research shows that taking collagen peptides from fish can lower blood sugar in people with diabetes. Exercise-induced muscle soreness: Early research shows that taking bovine collagen peptides before intense exercise doesn't seem to reduce muscle pain. High blood pressure: Taking collagen peptides by mouth can lower blood pressure. Obesity: Early research shows that taking collagen peptides slightly reduces fat in people who are overweight. Pressure sores: Early research shows that taking collagen peptides might improve healing of pressure sores. Wound healing: Early research shows that taking collagen peptides can reduce skin redness and improve moisture and elasticity after laser skin removal.

Currently, there are not many known risks associated with taking collagen supplements. But often some supplements are manufactured with additional substances added, if you are allergic to these substances, the risk of an allergic reaction can still occur.
Some people have also reported that collagen supplements leave a lingering unpleasant taste in their mouth. In addition, collagen supplements also carry the risk of causing digestive problems such as feelings of fullness and heartburn. Even so, these supplements appear to be safe for most people.
Collagen peptides may be safe. There is some evidence that collagen peptides in doses up to 10-grams daily can be used safely for up to 5 months and very rarely side effects occur.
Supplements containing collagen are generally safe, fairly easy to use, and offer many health benefits.

Reference source: healthline.com