Is Oysters (cooked) safe during pregnancy?

Fish Also called Kalungu, Ali, Patti (Tamil); Muringa, Muru (Malayalam).

Best Choice, cooked only

FDA/EPA lists oysters as a Best Choice; the US FDA says to cook them until their shells open, because raw mollusks are particularly unsafe to eat.[1,2]

What official sources say

US FDA / US EPA: Advice about Eating Fish (For Those Who Might Become or Are Pregnant or Breastfeeding and Children Ages 1 - 11 Years)

  • Fish chart: Oyster Best Choice[1]
  • Pregnancy and breastfeeding: Eat 2 to 3 servings a week from the "Best Choices" list (OR 1 serving from the "Good Choices" list).[1]
  • Pregnancy and breastfeeding: 1 serving is 4 ounces[1]
  • Those who are pregnant or breastfeeding consume between 8 and 12 ounces per week of a variety of seafood from choices that are lower in mercury.[1]

US FDA: Meat, Poultry & Seafood (Food Safety for Moms-to-Be)

  • Cook clams, mussels, and oysters until their shells open. This means that they are done. Throw away the ones that didn't open.[2]
  • This makes raw mollusks particularly unsafe to eat. Seafood that's been cooked thoroughly is safe to eat.[2]

Related general rules

US CDC: Safer Food Choices for Pregnant Women

  • Safer Choice: Shellfish cooked until shells open during cooking or until flesh is pearly or white, and opaque[3]

Nutrition per 100 g (USDA)

Energy51 kcal
Protein5.71 g
Fibre0 g
Sugars0.62 g
Iron4.61 mg
Calcium59 mg
Folate (DFE)7 µg
Folate, total7 µg
Vitamin A (RAE)13 µg
Vitamin C0 mg
Vitamin D0 µg
Vitamin B128.75 µg
Choline65 mg
DHA (omega-3)0.136 g
EPA (omega-3)0.177 g
Caffeine0 mg
Sodium85 mg

USDA FoodData Central: Mollusks, oyster, eastern, wild, raw (FDC ID 171978), per 100 g. Public domain. Values describe that USDA record; composition varies with variety and preparation.

Sources

  1. US FDA / US EPA: Advice about Eating Fish (For Those Who Might Become or Are Pregnant or Breastfeeding and Children Ages 1 - 11 Years) · fda.gov. US government work, public domain; quoted. No endorsement implied.
  2. US FDA: Meat, Poultry & Seafood (Food Safety for Moms-to-Be) · fda.gov. US government work, public domain; quoted. No endorsement implied.
  3. US CDC: Safer Food Choices for Pregnant Women · cdc.gov. US government work, public domain; quoted. No endorsement implied.

Sources checked 26 September 2026.

Quotes are checked word for word against each source page, and paraphrases against the original text. Official bodies are named as sources only: none of them reviewed or endorses this page.

Educational information, not medical advice. Your own doctor or midwife may advise differently for you — follow their advice.