White mulberry, the primary active ingredient in mulberry zuccarin, can cause adverse side effects such as a drop in blood sugar levels, allergic discomfort, mild diarrhea and dizziness, as stated by Drugs.com. White mulberry can also have side effects relating to interactions with other medications.
WebMD suggests that individuals with diabetes be particularly careful when taking mulberry zuccarin, as it could lead to hypoglycemia without proper monitoring. To those who are allergic, mulberry zuccarin can cause hives and nasobronchial irritation. Some individuals experience mild bloating and constipation after ingestion. Those taking antidepressants or cholesterol-lowering medications may find that mulberry zuccarin exacerbates existing side effects and should be used with caution.