Most states have fluoridated water, which means you should be aware of possible fluoride side effects. However, taking an overdose of fluoride may cause serious problems. The potential side effects of Fluoride and lithium are very different. The only similarity is that both must be ingested to cause side effects. Dr. Susan Uhrich answered. It's uncommon, but you may even have a flouride allergy. A 48-year-old member asked: are the side effects of fluoride similar in a way to lithium? PRECAUTIONS: Before using sodium fluoride … Sodium fluoride in drinking water or taken as a supplement does not usually cause any side effects. Stop taking this medicine and get emergency help immediately if any of the following effects … You may report side effects to FDA at 1-800-FDA-1088.In Canada - Call your doctor for medical advice about side effects. Fluoride is a natural mineral that, when added to your oral care, helps prevent cavities. 35 years experience Psychiatry. You may report side effects to Health Canada at 1-866-234-2345. “Fluoride: A Review of Use and Effects on Health,” Journal of the Academy of Medical Sciences of Bosnia and Herzegovina, 2016 “The Effect of 0.2% Sodium Fluoride Mouthwash in … fluoride rinse side effects. Learn more about fluoride side effects. In a word,: No.