Vyvanse is a commonly used medication to treat ADHD. It’s an extended release version of the drug that lasts longer than traditional amphetamine salts. Because it’s a stimulant,

Vyvanse can also cause side effects such as nausea and an upset stomach.

Vyvanse and b12 are both supplements that help with energy or metabolism. If you take either of these medications, you may wonder if taking them together is safe or not?

In this article, we’ll explore the potential side effects and risks of combining Vyvanse and b12.

What is Vyvanse?

Vyvanse is a brand name for lisdexamfetamine, which is a type of drug called a selective norepinephrine reuptake inhibitor (SNRI). It works by increasing the amount of dopamine and norepinephrine in the brain.

These neurotransmitters are responsible for regulating emotions, impulses, and energy levels.

Vyvanse is commonly used to treat attention deficit hyperactivity disorder (ADHD) in both children and adults. It is also sometimes used to treat other conditions such as obesity.

Vyvanse is an extended release version of the drug. This means it’s designed to release into the bloodstream slowly over a period of 8 to 12 hours. This contrasts with the short-acting version of the drug which only lasts for about 3 to 4 hours.

This longer release time is designed to help prevent the uncomfortable or disruptive “rush” or “peaking” that people experience with the short-acting version.

See also  Why Am I Not Losing Weight on Vyvanse?

B12 Basics

Vitamin B12 is a nutrient that’s essential for good health. It plays an important role in your metabolism, neurological system, and red blood cells. B12 is commonly taken as a supplement to treat anemia, fatigue, and as a general health booster.

B12 is found naturally in foods like fish, meat, eggs, and dairy products.

There are different types of B12 supplements available. The type of supplement you take depends on your individual needs and circumstances.

For example, if you are pregnant, breastfeeding, or taking certain medications, you may need a special type of B12 supplement.

Taking Vyvanse with B12

Like all medications, Vyvanse can be taken with either food or on an empty stomach. Vyvanse is absorbed into your bloodstream through your intestinal tract, so food does not affect its absorption. However, food can affect how your body metabolizes Vyvanse.

So when taking Vyvanse, try to avoid certain foods or beverages.

For example, you should avoid eating grapefruit or drinking grapefruit juice while taking Vyvanse.

You should also avoid taking certain herbal supplements and medications while on Vyvanse.

You should also be careful about how you take your B12. You don’t want to take it too close to when you take Vyvanse. You want to give enough time for the Vyvanse to be absorbed by your body before you take the B12.

Otherwise, they may compete with each other, and they won’t both be fully absorbed. Taking your B12 too close to when you take your Vyvanse can cause less of it to be absorbed.

See also  Why Is Vyvanse so Expensive with Insurance?

This can lead to higher dosages of Vyvanse being required.

Potential Side Effects of B12 and Vyvanse Together

Before combining B12 and Vyvanse together, you should ask yourself why you are taking both supplements. If one of these supplements is helping you with energy, and the other is helping your neurological system, then you’re taking them for different reasons.

You should also consider the dosage of each supplement. It may be that you’re taking too much of one or both supplements.

As we’ve discussed, one of the main risks of combining B12 and Vyvanse is that less of each is absorbed. This means you’re not getting the full benefits of either supplement. If you’re taking B12 for fatigue, you may notice that the fatigue comes back when you’re taking Vyvanse.

You can also experience other side effects from combining B12 and Vyvanse together. These include nausea, vomiting, stomach cramping, and headaches.

Is There a Safe Way to Take B12 and Vyvanse Together?

If you’ve tried taking B12 and Vyvanse separately, but they don’t seem to be working, you can try taking them together. However, it’s important to take them at different times of the day and in different doses.

The best way to do this is to take B12 in the morning and Vyvanse at night. It’s also important to make sure you’re taking the right dose of each supplement. It’s recommended that you get your blood levels checked regularly to make sure you’re taking the right amount of each supplement.

See also  Can You Take Vyvanse Twice a Day?

If you’re combining Vyvanse and B12, make sure you are aware of the risks. And if you start to experience any side effects, you can discontinue using one or both supplements.


The good news is that there are many different ways to boost your energy levels, so you have lots of options. And combined with exercise, eating well, and getting enough sleep, energy supplements can help you reach your goals faster and more easily.

Before you start taking any new supplements, make sure to discuss it with your doctor. He or she can help you decide which supplements are best for you and can let you know if there are any potential interactions with other medications you’re taking.

David Warren

David Warren is a pharmaceutical specialist that dispenses prescription medication on a daily basis. He received a Bachelor of Science degree in pharmacy from the University of Tennessee in 1991. With over 50 publications on medication-related and pharmacy topics, David has been able to share his experiences and knowledge with others. David with lots of experience and knowledge in medications that are utilized to treat a wide range of medical conditions. Before David dispenses a medication to a patient, he will go over the side effects, dosage recommendation and contraindications.