Vyvanse and teeth grinding
Why Vyvanse causes teeth grinding and jaw clenching, what the dental damage looks like, and how to protect your teeth on long-term stimulant therapy.
Never start, stop, or change a medication based on what you read here. Bring questions to your dentist, physician, pharmacist, or prescribing clinician.
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
Signs to watch for
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
KYT Framework
KYT Framework connection
Four questions that shape how Vyvanse and teeth grinding and jaw clenching factor into dental planning.
Structure
Does teeth grinding and jaw clenching change bone, gum tissue, saliva, enamel, or healing support?
Force
Will chewing, grinding, or bite pressure create added risk for vulnerable teeth or healing tissue?
Timing
Is teeth grinding and jaw clenching something to prevent now, monitor, or evaluate soon?
Stability
What plan gives the mouth the best chance to stay stable?
Next steps
What to do about teeth grinding and jaw clenching
The medication side is usually not the right thing to change. The dental side is. Here is where to go next.
Other medications and teeth grinding and jaw clenching
Taking Vyvanse and noticing teeth grinding and jaw clenching changes?
Bring your medication list. KYT can evaluate cavity risk, gum health, and treatment timing in person.
Reviewed by Dr. Isaac Sun, DDS · KYT Dental Services · Fountain Valley, CA · Last reviewed: June 2026
This page is general patient education. It does not replace advice from your prescribing clinician, physician, pharmacist, or dentist. Medication information may change; verify with your clinical team.