Chitosan is a medicinal supplement derived from the shells of crab, shrimp and other crustaceans. Although additional research is needed, chitosan supplements are purported to lower cholesterol and aid in weight loss and wound healing. Despite these potential health benefits, chitosan is not safe for use during pregnancy.
Reduced Vitamin Absorption
Chitosan is a fiber-like substance and is believed to work by preventing your body from absorbing fat consumed as part of your daily diet. Unfortunately, this effect of chitosan also prevents your body from absorbing fat-soluble nutrients, including vitamins A, D, E and K and calcium. These nutrients are essential during pregnancy, as they help support the proper growth and development of your baby. For this reason, women should not take chitosan while pregnant.
Allergic Reaction
Pregnant women who are allergic to any type of shellfish shouldn't use chitosan supplements. Improper use of chitosan by hypersensitive people may induce a severe allergic reaction called anaphylaxis. A pregnant woman who exhibits signs of an allergic reaction -- such as facial or body swelling, flushing, difficulty breathing, hives or loss of consciousness -- requires emergency medical attention. Anaphylaxis can be deadly for both mother and baby if immediate and appropriate care is not received.
Side Effects
In addition to diminished vitamin absorption, chitosan may cause mild stomach upset if a pregnant woman chooses to use this supplement. Stomach upset side effects include constipation and gas, which may contribute to overall discomfort and loss of appetite. Pregnant women who experience chronic constipation should seek additional care from a medical professional.
Interacts with Blood Thinners
Chitosan supplements may also interact with blood-thinning medications. Pregnant women who need to use blood-thinning drugs, such as warfarin, may experience bleeding or bruising complications if they use chitosan supplements.
