Modafinil is a Nootropic that is primarily prescribed to treat excessive daytime sleepiness caused due to narcolepsy, shift work sleep disorder, and obstructive sleep apnea.
However, Modafinil consumers might experience teeth grinding as its side effect. Teeth grinding or jaw clenching is involuntary and can impact the teeth' enamel and cause other issues like headaches. It should be known that teeth grinding is a rare side effect of Modafinil and only 0.27%, mostly women, have reported about this.
To avoid this side effect one can lower the Modafinil dosage, use a mouth guard, and can try jaw exercises.
For more information on Modafinil teeth grinding side effect read this blog at Health Naturo: https://healthnaturo.com/modafinil-teeth/