A 50-year-old member asked:

How much fluoride is considered safe?

2 doctor answers5 doctors weighed in
Dr. Howard Schneider
Pediatric Dentistry 36 years experience
In drinking water...: The World Health Organization considers 1.5 mg/l of fluoride or lower safe In drinking water. Above 1.5 mg/l dental fluorosis may occur to an objectionable degree. Concentrations between 3-6 mg/l may cause skeletal fluorosis. Above 10 mg/l can cause crippling skeletal fluorosis. Optimally fluoridated water in the USA is kept at about 0.7 mg/l and is not a problem.
Created for people with ongoing healthcare needs but benefits everyone.
Dr. Paul Grin
Pain Management 38 years experience
4.0 mg/L: EPA has set this level of protection based on the best available science to prevent potential health problems. Fluoride is safe and effective.
Created for people with ongoing healthcare needs but benefits everyone.

Similar questions

San Jose, CA
A 19-year-old male asked:

How much is considered a high level of fluoride in your system.

1 doctor answer2 doctors weighed in
Dr. Arnold Malerman
Orthodontics 55 years experience
Fluoride: 8mg/kg of body weight is considered to be toxic. For a 160lb male. That means about 575mg of fluoride. Review of the literature reveals no, and I repeat "no," fluoride poisoning from toothpaste, mouthwash, naturally occurring fluoride in water supplies, or water supplies fortified with fluoride.
Created for people with ongoing healthcare needs but benefits everyone.

Related questions

A 42-year-old member asked:
Is it safe to mix hydrogen peroxide and fluoride in toothpaste?
3 doctor answers7 doctors weighed in
A 44-year-old member asked:
Is it safe to take fluoride while pregnant or breastfeeding?
5 doctor answers8 doctors weighed in
A 19-year-old female asked:
Is it safe to drink baby nursery purified no added fluoride water while pregnant?
2 doctor answers3 doctors weighed in
Last updated Apr 1, 2015
Connect with a U.S. board-certified doctor by text or video anytime, anywhere.
$44 video appointments with $19/month membership*
*Billed $57 every 3 months. Cancel anytime.


Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.