Vitamin B1: Thiamine

Updated: Apr 28


Vitamin B1, commonly known as Thiamine is a water-soluble vitamin that converts carbohydrates to glucose and is used as energy for your daily activities.


Thiamine supports the functioning of the nervous system and strengthens the immune system. In pregnancy, thiamine is essential for your baby’s brain development.


Pregnant women are advised to take 1.4mg daily and may be advised to increase the dose for multiple pregnancies (eg. twins, triplets, etc)


Food sources of natural Vitamin B1, Thiamine include:

Pork, peas, fortified cereals, wholegrain rice, pecans, oats, wholegrain bread, salmon, brazil nuts, oranges, dried beans, rice lentils, and seeds.


Prenatal vitamins usually contain thiamine. If you are unsure speak to your midwife, doctor, or pharmacist.