During pregnancy your baby requires more room as it grows, and this often puts the digestive system under pressure. Indigestion and constipation are typically experienced in the third trimester. A liquid magnesium may be a good choice for a sensitive gut, otherwise it’s all about getting a high dose of magnesium as you’ll be sharing your magnesium supplement with your baby. This is where a multi chelate formula excels, especially one that contains bisglycinate and taurate since these two chelates have the highest rates of absorption.