Is Collagen Safe During Pregnancy? What the Research Says

Pregnancy changes everything about how you read a supplement label. Ingredients you took without thinking before suddenly need a second look, and the cautious instinct is the right instinct. Collagen has become one of the most-asked-about supplements for pregnant and trying-to-conceive women, partly because it shows up in so many beauty and wellness routines, and partly because the changes pregnancy brings to skin, hair, and joints make many women wonder if a collagen boost would help.

I want to give you a clear, honest look at what the research actually shows about collagen during pregnancy. Our Collagen Peptides Unflavored is a single-ingredient hydrolyzed collagen product, which is the simplest formulation to evaluate for pregnancy safety, but the principles below apply to any high-quality collagen peptide product. As always, this is general information, not a substitute for the conversation you should have with your own healthcare provider about your specific situation.

What Collagen Actually Is

Before evaluating safety, it helps to understand what you are actually consuming. Hydrolyzed collagen peptides are protein fragments derived from animal sources, most commonly cow hide or bone, broken down into small peptides that absorb easily through the digestive tract. There are no added hormones, no synthesized compounds, no pharmaceutical actions. It is, biochemically, just protein in a particular amino acid profile.

This matters for the pregnancy safety question because the body responds to collagen peptides the same way it responds to any other dietary protein source. The amino acids are extracted and used wherever the body needs them, whether to build maternal tissue, support placental development, or contribute to fetal growth. There is no exotic mechanism that would create unique pregnancy risks.

What the Research Has Studied

Direct research on collagen supplementation during human pregnancy is limited, which is true for most supplements because pregnant women are typically excluded from clinical trials for ethical reasons. What we do have is decades of research showing that high-quality hydrolyzed collagen is safe in non-pregnant adults, no adverse effects reported in animal pregnancy studies, and the practical observation that women have consumed collagen-rich foods like bone broth throughout pregnancy in cultures around the world for centuries without identifiable harm.

The professional consensus among most prenatal nutrition specialists is that high-quality hydrolyzed collagen from a reputable source is likely safe during pregnancy, though most will appropriately encourage you to check with your own OB or midwife before adding any new supplement to your routine. The reason for that recommendation is not specific concern about collagen, but the general caution that applies to any supplement decision during pregnancy.

Why Some Women Want Collagen During Pregnancy

The interest in collagen during pregnancy makes sense given what pregnancy demands of a woman's body. Skin stretches significantly. Hair often goes through changes (some women experience their best hair growth ever during pregnancy, others see thinning). Joints loosen under the influence of relaxin. Connective tissue is under more demand than at any other point in adult life. Collagen is the structural protein that supports all of these tissues.

Adequate protein intake during pregnancy is essential for healthy fetal development, and most prenatal nutrition guidance emphasizes increasing daily protein intake by 25 grams or so during the second and third trimesters. Collagen can contribute to that increased protein target while also delivering the specific amino acids (glycine, proline, hydroxyproline) that support connective tissue health.

The Glycine Question

One of the more interesting research angles on collagen during pregnancy involves glycine specifically. Glycine is the most abundant amino acid in collagen, and it is also classified as a conditionally essential amino acid during pregnancy, meaning that the body's demand for glycine exceeds what it can produce on its own during this time.

Glycine is required for fetal DNA synthesis, collagen production in developing tissues, and the formation of the placenta. Some research suggests that maternal glycine intake may not always meet the elevated demand during pregnancy, particularly in the third trimester. Foods and supplements that supply glycine, including collagen and bone broth, may help close that gap.

Bone Broth as a Complementary Source

Many pregnant women find that bone broth becomes a daily anchor during pregnancy. It delivers the same amino acids as collagen peptides but in a whole-food format that feels nourishing in a way supplements sometimes do not. Our bone broth collection is built on grass-fed, slow-simmered bones that produce a richer amino acid profile than typical commercial broths, and the Bone Broth Diet framework offers structure for incorporating it into daily eating, though the strict cleanse aspects are not appropriate during pregnancy and you should consult your provider before following any restrictive eating pattern while pregnant.

For women who want the connective tissue support without the time investment of making bone broth from scratch, daily collagen peptides offer a simpler alternative. Many women in the prenatal period find that the most sustainable approach is one cup of bone broth several times a week, plus a daily scoop of collagen, for both the nutritional support and the routine of doing something concrete for the body's increased demands.

What to Look For in a Pregnancy-Safe Collagen

The collagen products that are most appropriate during pregnancy share a few characteristics. Single-ingredient hydrolyzed collagen with no added botanicals, herbs, or unfamiliar compounds is the cleanest choice. Third-party tested products with verified absence of heavy metals are important, since some lower-quality collagen has been found to contain traces of lead or other contaminants. Products from grass-fed bovine or wild-caught marine sources tend to have cleaner profiles than those from commodity livestock.

Avoid collagen products that contain added ingredients you would not knowingly consume during pregnancy, including herbal blends, hormonal-acting plant compounds, high-dose vitamins, or stimulants. The simpler the supplement facts panel, the easier it is to evaluate. Our companion post on bone broth vs collagen covers the considerations in choosing between the two forms.

Trimester-by-Trimester Considerations

During the first trimester, when nausea is often at its peak, many women find that collagen peptides mixed into a bland, cold liquid like water or apple juice are more tolerable than other protein sources. Hot liquids can worsen nausea in this window, so a cold or room-temperature option works better.

By the second trimester, when appetite typically returns and energy improves, collagen can be incorporated into smoothies, oatmeal, or warm beverages. The increased demand on connective tissue is also picking up at this point. The third trimester is when collagen and glycine demand peaks, and consistent daily intake during this window aligns with the body's elevated needs.

Postpartum: The Other High-Demand Window

It is worth mentioning that the postpartum period creates its own significant demand for collagen and amino acids. Tissue recovery, lactation, and the structural changes the body goes through after delivery all increase nutritional needs. Many women find that the collagen routine they started during pregnancy becomes even more valuable in the postpartum recovery window. Our collagen and hydration for skin post covers the broader picture of how to support skin and connective tissue in the months after delivery.

A Reasonable Approach for Pregnancy

If you want a simple framework, here it is. Talk with your OB or midwife before adding Collagen Peptides Unflavored to your routine, but most providers will not have concerns about a single-ingredient hydrolyzed collagen from a reputable source. Start with a moderate dose (around 10 grams per day, mixed into a beverage that suits your trimester). Combine with a cup of bone broth several times a week. Pay attention to how your body responds, and adjust accordingly. For the vast majority of pregnant women, this kind of approach offers meaningful support for the body's increased demands without introducing any of the safety concerns that other supplements might.

Frequently Asked Questions

Can Collagen Peptides help with stretch marks during pregnancy?

Collagen Peptides may support skin elasticity by providing the amino acids your body uses to build new collagen in stretched skin, though research specific to pregnancy stretch marks is limited. Many women take Collagen Peptides during and after pregnancy for this reason, but results may vary.

Can Collagen Peptides be taken while breastfeeding?

Collagen Peptides is a simple hydrolyzed protein source, and most lactation specialists consider it appropriate during breastfeeding. The amino acids support maternal tissue recovery and provide additional protein during the high-demand postpartum period. Always confirm with your healthcare provider before adding any supplement while nursing.

How much Collagen Peptides should be taken during pregnancy?

A moderate dose of about 10 grams per day (one scoop of Collagen Peptides) is a reasonable starting point during pregnancy. This dose contributes meaningfully to the increased protein and glycine demands of pregnancy without exceeding what most providers consider appropriate for prenatal supplementation.

Does Collagen Peptides have any pregnancy interactions?

Collagen Peptides is a single-ingredient hydrolyzed protein with no known drug or nutrient interactions specific to pregnancy. Always tell your OB or midwife about all supplements you take, including Collagen Peptides, as part of your prenatal care so they have the complete picture.