Homeopathic teething tablets are being recalled due to potential health risks   to children, according to the Food and Drug Administration (FDA).

Standard Homeopathic Company in Los Angeles is voluntary recalling Hyland’s Baby Teething Tablets and Hyland’s Baby Nighttime Teething Tablets, which contain inconsistent amounts of belladonna, a toxic substance, that may differ from the calculated amount on the label.

“FDA reminds consumers that homeopathic teething tablets containing belladonna pose an unnecessary risk to infants and children and urges consumers not to use these products,” the agency said in its alert to consumers.

The Hyland’s tablet recall follows FDA warnings in September and January and a recall of similar products from another manufacturer in November.

Standard Homeopathic Company said it stopped manufacturing the teething products in October 2016. Customers who still have these products should contact the manufacturer at 800-991-3376.

If a child experiences health issues potentially related to the tablets, contact the child’s health care provider. Those issues may include seizures, difficulty breathing, lethargy, excessive sleepiness, muscle weakness, skin flushing, constipation, difficulty urinating or agitation, according to the FDA.

Health care professionals and patients can report adverse side effects to the FDA’s MedWatch Safety Information and Adverse Event Reporting Program at www.fda.gov/MedWatch/report or by calling 800-332-1088.