It is not banned, but energy drinks with Adderall or Vyvanse are a combination to keep small or skip, because you are adding caffeine, another stimulant, on top of a prescription stimulant. MedlinePlus names stimulants among the medicines that can interact with caffeine, and both can raise heart rate and disrupt sleep. A single energy drink can carry up to 328 mg of caffeine, close to the 400 mg a day the FDA cites for most adults. Ask your prescriber what amount is OK for you, and stop if your heart races, pounds, or you feel faint.
Why is an energy drink different from a regular coffee?
The main difference is how much caffeine can come in one container. The FDA says energy drinks generally have 54 to 328 mg of caffeine per 16 ounces. For comparison, the FDA lists 113 to 247 mg for 12 ounces of brewed coffee, so a strong can can match or beat a large coffee, and it is easy to drink fast.
MedlinePlus also warns that labels on energy drinks may not show the actual amount of caffeine, and that energy drinks can be dangerous because they have large amounts of it. 2 high-caffeine cans in one study session can put you past 400 mg.
- Check the label: find the caffeine in mg and add it up for the whole can.
- Count every source: coffee, tea, soda, pre-workout, and caffeine pills all add up.
- Know the label can be off: MedlinePlus says some energy drink labels do not show the true amount.
What does caffeine add on top of Adderall or Vyvanse?
Adderall (amphetamine and dextroamphetamine) and Vyvanse (lisdexamfetamine) are central nervous system stimulants. Caffeine is a stimulant too. MedlinePlus lists stimulants among the medicines to check with your provider about before you use caffeine.
The Adderall XR label says the drug raises blood pressure by about 2 to 4 mmHg and heart rate by about 3 to 6 beats per minute on average. The FDA lists increased heart rate, heart palpitations, high blood pressure, jitters, anxiety, and sleep problems as signs of too much caffeine. The effects overlap, so the 2 together may add up, but none of the sources we checked measured how much.
None of the sources we checked give a safe caffeine number for people on ADHD medicine. That is why your prescriber or pharmacist is the right person to set your limit.
Is the 400 mg caffeine limit still right if I take a stimulant?
Not automatically. For most adults, the FDA cites 400 mg a day as an amount not generally linked to negative effects. It also says some medicines and conditions can make people more sensitive to caffeine, and that sensitivity varies widely from person to person.
So treat 400 mg as a ceiling, not a target. The FDA does not say which medicines lower your limit or by how much, so no one can give you a set number for a stimulant without knowing you. MedlinePlus says to ask your provider about caffeine if you have anxiety, high blood pressure, or a problem with the rate or rhythm of your heartbeat.
- Under 18: the FDA says medical experts advise against energy drinks for children and teens.
- Pregnant, trying, or breastfeeding: the FDA says to talk with your provider about caffeine.
- Pure or concentrated caffeine: the FDA warns these products can cause serious harm, including seizures and death. Do not use them.
Will an energy drink wreck my sleep on Adderall?
It can. Both can cause trouble sleeping on their own. In an adult trial on the Adderall XR label, 27% of people on the drug reported insomnia compared with 13% on placebo. MedlinePlus says Adderall and Vyvanse should not be taken in the late afternoon or evening because they can make it hard to fall or stay asleep.
MedlinePlus says you may feel caffeine's effects for 4 to 6 hours. An afternoon can to push through the medicine wearing off may still be working at bedtime.
When should you get care?
In an emergency, call 911Get care the same day if you had palpitations with chest pain, shortness of breath, or fainting and they have now stopped.
See your doctor soon if palpitations keep coming back, happen more often, or last more than a few minutes, or if you have a heart condition or a family history of heart problems.
Call your prescriber right away if you have a fast, pounding, or irregular heartbeat, cannot sleep, or feel very anxious, restless, or agitated.
Call 911 if you have chest pain, shortness of breath, fainting, a seizure, confusion, hallucinations, slow or difficult speech, or weakness or numbness in an arm or leg.
Call 911 if palpitations do not go away, or if someone has collapsed or cannot be woken.
For a possible overdose without those signs, call Poison Control at 1-800-222-1222, 24/7.
If you have thoughts of harming yourself or someone else, call or text 988. If someone is in immediate danger, call 911.
How our AI doctor decides when to send you to care ›How can I cut the risk if I still want one?
Ask your prescriber or pharmacist first, and tell them how much caffeine you have on a typical day. They know your dose, your heart history, and your blood pressure readings.
- Pick a smaller can or a lower-caffeine drink, and have 1, not several.
- Sip it slowly instead of finishing it in a few minutes.
- Keep it early in the day, and skip caffeine in the late afternoon and evening.
- Do not add more stimulants, like pre-workout or caffeine pills.
- Do not take extra Adderall or Vyvanse to push through. MedlinePlus says both can be habit-forming and should be taken only as prescribed.
- Stop if you feel off: the FDA lists a fast heartbeat, palpitations, jitters, and anxiety as signs of too much caffeine.
Common questions
Can I drink energy drinks with Adderall?
It is not forbidden, but it is a combination to keep small or avoid. Energy drinks can add a large caffeine dose to a prescription stimulant, and both can raise heart rate and hurt sleep. Ask your prescriber what amount is OK for you.
Is it different with Vyvanse?
Not in a way that matters here. Vyvanse (lisdexamfetamine) is also a central nervous system stimulant, and MedlinePlus gives it similar heart warnings and the same advice not to take it in the late afternoon or evening. The same caution about energy drinks applies.
How much caffeine is in an energy drink?
The FDA says energy drinks generally have 54 to 328 mg of caffeine per 16 ounces. MedlinePlus notes labels may not show the actual amount. Check the can and count the caffeine in the whole can.
Is coffee safer than an energy drink with Adderall?
The main issue is the total caffeine, not the drink. The FDA lists 113 to 247 mg for 12 ounces of brewed coffee and 54 to 328 mg for 16 ounces of energy drink, so a large coffee can match a can. Count both the same way, and keep the total low.
Can I drink an energy drink when my Adderall wears off?
It is better not to. MedlinePlus says caffeine's effects can last 4 to 6 hours, so an afternoon can may cut into sleep, and Adderall itself can cause insomnia. If your medicine wears off too early to get through the day, tell your prescriber instead of filling the gap with caffeine.
Pymander is not a replacement for a physician and does not provide medical advice, diagnosis, or treatment. Always seek the advice of a qualified health provider with questions about a medical condition. If you think you may have a medical emergency, call 911.