The most common side effects of molasses are loose stools and diarrhea, as stated by Ayur Times. People who take more than 3 teaspoons of molasses a day may also experience abdominal bloating, pain and cramps.
Some people experience dizziness or nausea when taking molasses for the first time, so it is best to take it with food or on a full stomach, according to Ayur Times. People who are allergic to sugarcane should avoid molasses. Women who are pregnant or breastfeeding should consult with a doctor prior to taking molasses regularly, as should people who have high blood sugar.