Dosage, side effects, cost and more

Like most medicines, Dayvigo can cause mild to severe side effects. The lists below describe some of the more common side effects that Dayvigo can cause. These lists do not include all possible side effects.

Keep in mind that the side effects of a medicine can depend on:

  • your age
  • other health problems you have
  • other medicines you are taking

Your doctor or pharmacist can tell you more about the potential side effects of Dayvigo. They can also suggest ways to help reduce side effects.

Mild side effects

Here is a short list of some of the mild side effects that Dayvigo can cause. For more information about other mild side effects, talk to your doctor or pharmacist, or read the Prescribing Information for Dayvigo.

Mild Dayvigo side effects that have been reported include:

  • drowsiness
  • headache
  • unusual dreams or nightmares

Mild side effects of many medications can disappear within days to weeks. But if they become bothersome, talk to your doctor or pharmacist.

Serious side effects

Serious Dayvigo side effects can occur, but they are not common. If you have serious side effects from Dayvigo, call your doctor right away. But, if you think you have a medical emergency, immediately call 911 or your local emergency number.

Serious Dayvigo side effects that have been reported include:

*For more information on this side effect, see the “Side Effects Focus” section below.


If you think someone is at immediate risk of harming themselves or another person:

  • Dial 911 or your local emergency number.
  • Stay with the person until help arrives.
  • Remove any guns, knives, drugs, or other objects that could cause damage.
  • Listen, but don’t judge, argue, threaten or yell.

If you or someone you know is considering suicide, get help from a crisis or suicide prevention hotline. Try the National Suicide Prevention Lifeline at 800-273-8255.

Focus on side effects

Learn more about some of the side effects Dayvigo can cause.

Sleep paralysis

Taking Dayvigo can cause sleep paralysis. This is a less common side effect, but it can occur in some people. With sleep paralysis, you cannot speak or move when you fall asleep or when you wake up. An episode of sleep paralysis can last a few seconds or minutes. You may feel fear or anxiety during or after an episode. Some people may also experience hallucinations.

What might help

If you experience episodes of sleep paralysis or bothersome hallucinations while taking Dayvigo, talk to your doctor. In some cases, they may recommend changes to your treatment plan.

In some cases, improving your sleep hygiene can also help prevent sleep paralysis. Try to go to bed around the same time each night and aim for 7-8 hours of sleep. If you have questions about how to improve your sleep hygiene, talk to your doctor.

Excessive sleepiness

Dayvigo may cause excessive sleepiness in some people. It can affect how you perform activities during the day. You may feel less alert than usual and have trouble driving or reacting quickly.

Even if you don’t feel sleepy, your ability to think or react quickly may be affected. In some cases, your doctor may advise you not to drive or operate heavy machinery the day after taking a dose of Dayvigo.

What might help

Since Dayvigo can cause excessive sleepiness, you should take your dose at bedtime. It is important to take it when you plan to sleep at least 7 hours. Taking Dayvigo as prescribed may help reduce or prevent excessive sleepiness.

If you take other medicines with Dayvigo that can also cause drowsiness, it could make this side effect worse. If you are taking any other medicines, talk to your doctor before starting treatment with Dayvigo.

Your doctor can determine if it is safe for you to take Dayvigo.

Heart palpitations

Some people may experience heart palpitations (a feeling of skipped or extra heartbeats) during treatment with Dayvigo. This is a less common but serious side effect of Dayvigo. In studies, heart palpitations have occurred in people taking 10 milligrams (mg) of Dayvigo. This side effect has not been reported in people taking the 5 mg dose of the drug.

If you experience heart palpitations, you may become aware of your heartbeat because it doesn’t feel normal. Other symptoms of heart palpitations include:

  • rapid heartbeat
  • feeling of skipped or fluttering beats
  • Beating heart

What might help

If you develop heart palpitations with Dayvigo treatment, talk to your doctor. They may recommend a change in treatment. Also see this article for tips on managing heart palpitations. Some techniques to try include:

  • relax in a comfortable position
  • breathe deeply
  • to drink a lot of water

Allergic reaction

Some people may have an allergic reaction to Dayvigo. Although no allergic reactions have been reported in studies on Dayvigo, it can still happen.

Symptoms of a mild allergic reaction may include:

  • itchy skin
  • itching
  • hot flashes (temporary warmth, redness or deepening of skin color)

A more serious allergic reaction is rare but possible. Symptoms of a severe allergic reaction can include swelling under the skin, usually on the eyelids, lips, hands or feet. They can also include swelling of the tongue, mouth, or throat, which can lead to difficulty breathing.

Call your doctor right away if you have an allergic reaction to Dayvigo. But if you think you have a medical emergency, call 911 or your local emergency number.

Dosage, side effects, cost and more

Leave a Reply

Your email address will not be published.

Scroll to top