KYT Dental Services
Vyvanse · Teeth grinding

Vyvanse and teeth grinding

Quick answer

Yes, Vyvanse can cause teeth grinding and jaw clenching, especially during the hours the medication is most active. This is a known effect of all CNS stimulants, not specific to Vyvanse. The grinding often goes unnoticed but shows up as flat wear on the back teeth, fractured fillings, jaw soreness, and headaches that radiate from the temples. The damage is largely preventable with a custom night guard, daytime awareness, and managing the dry mouth that compounds it.

The mechanism
Why Vyvanse causes teeth grinding

Vyvanse is a prodrug that converts to dextroamphetamine in the body. It works by increasing dopamine and norepinephrine, the same neurotransmitter targets as Adderall. These signals also raise baseline activity in the muscles that move the jaw. The result is more clenching during the day and more grinding at night.

The grinding is rarely conscious. Most patients become aware of it through downstream signs: shortened front teeth, flat or polished wear facets on molars, tooth fractures, jaw muscle tenderness on waking, or headaches in the temples. Bed partners sometimes notice the sound before the patient feels it.

Stimulants also reduce saliva flow. Less saliva means less mineral protection on the enamel, so the same amount of grinding does more damage than it would on a healthy mouth. The dual effect is what makes stimulant-related bruxism particularly destructive.

Practical steps
What to do if Vyvanse is making you grind
  • Get a custom night guard. Boil-and-bite versions do not fit precisely and tend to wear out quickly. A custom guard distributes grinding force and lasts years.
  • Practice daytime awareness. Lips together, teeth apart. Your teeth should only touch briefly when you swallow.
  • Hydrate consistently through the day, especially during peak medication hours.
  • Sugar-free gum with xylitol between meals helps with saliva flow.
  • Ask your prescriber about timing. Some patients grind less at night if their dosing is fully cleared by bedtime.
  • Tell your dentist about the medication. Cleaning intervals and early bonding repairs are easier when the grinding is in the chart.
Red flags
When to call your dentist
  • Jaw soreness in the morning that is now routine.
  • Headaches in the temples, particularly on waking.
  • Teeth that look shorter or flatter across the chewing surface.
  • A sudden sharp edge on a tooth or a chipped corner.
  • A clicking, popping, or locking sensation in the jaw joint.
Common questions
What patients ask about Vyvanse and teeth grinding and jaw clenching.
Does Vyvanse cause more or less grinding than Adderall?
There is no strong evidence either way. Both are stimulants and both raise the risk. Some patients report less grinding on Vyvanse because of the smoother, longer-acting release. Others report no difference. The dental management is the same for both.
Will my teeth stop grinding if I stop Vyvanse?
Often yes, but not always. Grinding has multiple causes (stress, sleep apnea, malocclusion), and stopping the medication may reduce but not eliminate it. Never stop ADHD medication on your own; talk to your prescriber. Untreated ADHD has its own significant downsides.
How much damage can Vyvanse grinding actually cause?
It depends on intensity and duration. Mild grinders may have minor wear over years. Heavy grinders can visibly shorten front teeth within months and fracture molars repeatedly. The damage is cumulative and largely permanent: enamel does not regrow.
What does a custom night guard cost?
In Orange County, custom night guards typically run $400 to $700 without insurance. Many PPO plans cover part of the cost when grinding is documented in the chart. The per-night cost over the lifespan of a guard is small compared to the cost of restoring worn or cracked teeth.
Can my dentist tell if I am grinding from Vyvanse without me saying so?
Often yes. The wear pattern from stimulant-related grinding tends to be heavy, even across multiple teeth, with flat polished facets on the cusps. We do not need to ask whether you grind to see the evidence. Mentioning the medication helps us understand the underlying cause.
Talk to a dentist about your case
Bring your medication list to your visit.

General guidance is a starting point. Your specific dental plan depends on your medical history, your other medications, and what your mouth looks like in person. Schedule a consultation and we’ll walk through it.

Schedule a consultationCall (833) 598-3368

Reviewed by Dr. Isaac Sun, DDS.

This page is general information, not medical advice. Do not start, stop, or change any medication based on what you read here. Talk to your prescribing physician and your dentist about your specific situation.