Is Oysters Safe During Pregnancy? (Updated 2026 Guide)

Updated July 16, 2026

The Answer

You can eat oysters during pregnancy when they are fully cooked to 145°F and obtained from a reputable source. Avoid raw or undercooked oysters because they can carry Vibrio, norovirus, and other causes of foodborne illness.

Oysters are a low mercury seafood choice that provides protein, zinc, iodine, and omega-3 fats. The primary pregnancy concern is preparation: thorough cooking reduces the infection risk associated with eating raw or undercooked oysters.

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✓ What's Safe

  • • Oysters cooked to an internal temperature of 145°F
  • • A reputable seafood seller, restaurant, or other traceable source
  • • Preparations in which you can confirm the oysters were fully cooked
  • • Simple cooked dishes that make the oysters’ doneness easy to assess
  • • Careful refrigerated storage and handling before cooking

✗ What to Avoid

  • • Raw oysters, including oysters served on the half shell
  • • Undercooked oysters or dishes with an uncertain cooking temperature
  • • Raw oyster preparations such as ceviche, sushi, or sashimi
  • • Assuming a reputable raw bar eliminates Vibrio or norovirus risk
  • • Treating oysters’ low mercury level as evidence that raw oysters are safe
  • • Oysters from an unknown source or with uncertain storage and handling

Most Common Ingredients in Oysters Products

We analyzed 19 oysters products. Here are the most common ingredients, ranked by how often they appear:

water
84%
salt
58%
oysters
37%
whole oysters
21%
pacific oysters
21%
enzymes
11%
spinach
11%
sugar
11%
pacific oysters and water
11%
canola oil
5%
corn syrup
5%
corn starch
5%

Ingredients to Watch Out For in Oysters

These are the most common flagged ingredients across 19 oysters products we analyzed.

oysters

CAUTION

Oysters is a low mercury shellfish that may be eaten raw or cooked. Are generally compatible when fully cooked but raw or undercooked oysters are discouraged in pregnancy because of Vibrio norovirus and other foodborne illness risk.

Found in 7 of 19 products (37%)

pacific oysters

CAUTION

Pacific oysters is a low mercury shellfish that may be eaten raw or cooked. Are generally compatible when fully cooked but raw or undercooked oysters are discouraged in pregnancy because of Vibrio norovirus and other foodborne illness risk.

Found in 4 of 19 products (21%)

whole oysters

CAUTION

Whole oysters is a low mercury shellfish that may be eaten raw or cooked. Are generally compatible when fully cooked but raw or undercooked oysters are discouraged in pregnancy because of Vibrio norovirus and other foodborne illness risk.

Found in 4 of 19 products (21%)

pacific oysters and water

CAUTION

Pacific oysters and water is a low mercury shellfish that may be eaten raw or cooked. Are generally compatible when fully cooked but raw or undercooked oysters are discouraged in pregnancy because of Vibrio norovirus and other foodborne illness risk.

Found in 2 of 19 products (11%)

fennel seed

CAUTION

Fennel seed is an edible herb and spice also sold as tea, essential oil, and supplement. Is generally low concern at normal culinary amounts but should be avoided as concentrated medicinal tea, essential oil, or supplement during pregnancy because safety data are limited and estrogenic or uterine concerns exist.

Found in 1 of 19 products (5%)

raw pacific oysters

CAUTION

Raw pacific oysters is a low mercury shellfish that may be eaten raw or cooked. Are generally compatible when fully cooked but raw or undercooked oysters are discouraged in pregnancy because of Vibrio norovirus and other foodborne illness risk.

Found in 1 of 19 products (5%)

Oysters Products We've Analyzed

We graded 19 oysters products for pregnancy safety.

A
0 (0%)
B
0 (0%)
C
3 (16%)
D
0 (0%)
F
16 (84%)

Your Questions Answered

Can you eat oysters during pregnancy?

Yes, oysters can be eaten during pregnancy when they are fully cooked to 145°F and come from a reputable source. They are considered a low mercury seafood choice. Raw or undercooked oysters should be avoided because they can carry Vibrio, norovirus, and other foodborne pathogens.

How should oysters be prepared during pregnancy?

Cook oysters thoroughly until they reach an internal temperature of 145°F. Choose preparations where the cooking method and doneness can be confirmed rather than relying on a lightly heated or partially cooked dish. A reputable source and careful handling remain important even when the oysters will be cooked.

Are oysters high in mercury?

Oysters are a low mercury seafood and are listed as a Best Choice in FDA/EPA fish advice. Their primary pregnancy concern is therefore not mercury but foodborne infection from raw or undercooked shellfish. Thorough cooking is what makes the key difference.

What seafood should you avoid during pregnancy?

Avoid raw or undercooked seafood, including raw oysters, clams, scallops, sushi, sashimi, and ceviche. For oysters specifically, the concern is exposure to Vibrio, norovirus, and other foodborne pathogens. Cook seafood to 145°F rather than relying on appearance or source alone.

What if I accidentally ate raw shrimp while pregnant?

Raw shrimp and raw oysters share the broader concern of foodborne infection from uncooked seafood. An exposure does not establish that an infection occurred, but it is reasonable to contact your prenatal clinician for individualized guidance, especially if you feel unwell. Avoid additional raw seafood and choose seafood cooked to 145°F going forward.

Are grilled or baked oysters safe during pregnancy?

Grilling or baking can be suitable, but the preparation name alone does not prove that the oyster was fully cooked. Confirm that the oysters reached 145°F throughout and were not merely warmed or lightly seared. If the doneness is uncertain, choose another fully cooked option.

How Do We Score Products for Pregnancy Safety?

We analyze each product's ingredients and category to flag known risks and provide cautionary notices for general category safety concerns.

References

  1. https://www.fda.gov/food/people risk foodborne illness/eating out bringing food safety moms be
  2. https://www.fda.gov/food/consumers/advice about eating fish
  3. https://www.foodsafety.gov/people at risk/pregnant women
  4. https://www.fda.gov/food/people risk foodborne illness/meat poultry seafood food safety moms be
  5. https://www.cdc.gov/vibrio/prevention/index.html