Fycompa Side Effects
Some people may experience side effects during Fycompa treatment. Research has shown that sleepiness, headaches, and dizziness are some of the most commonly reported problems with this anti-seizure drug. Because serious reactions, such as suicidal thoughts, balance problems, and violent behaviors, can also occur, make sure to seek medical attention if you develop anything that does not seem right.
Just like any medicine, Fycompa™ (perampanel) can cause side effects. However, not everyone who takes the medication will have problems. In fact, most people tolerate it quite well. If reactions do occur, in most cases, they are minor and either require no treatment or are treated easily by you or your healthcare provider.
(This article covers many, but not all, of the possible side effects with Fycompa. Your healthcare provider can discuss a more complete list with you.)
Fycompa has been studied extensively in clinical trials. In these studies, the side effects that occurred in a group of people taking the drug were carefully documented and compared to those that occurred in a similar group of people taking a placebo (a "sugar pill" with no active ingredients). As a result, it was possible to see what side effects occurred, how often they appeared, and how they compared to the placebo.
In these studies, the most common Fycompa side effects included:
- Dizziness -- in up to 43 percent of people
- Sleepiness -- up to 18 percent
- Headache -- up to 13 percent
- Fatigue -- up to 12 percent
- Irritability -- up to 12 percent
- Falls -- up to 10 percent
- Nausea -- up to 8 percent
- Loss of muscle coordination -- up to 8 percent
- Balance problems -- up to 5 percent
- A whirling or spinning sensation (vertigo) -- up to 5 percent
- Back pain -- up to 5 percent.
Other common reactions, occurring in 2 percent to 4 percent of people, included:
- Weight gain
- Blurred vision
- Upper respiratory tract infections, such as the common cold
- Difficulty speaking
- Problems with walking
- Excessive daytime sleepiness or prolonged nighttime sleep
- Double vision
- Head injury, which was likely related to falls
- Muscle or joint pain
- Arm or leg pain
- Reduced sense of touch
- Memory problems
- Loss of strength and energy
- Swelling of the arms, hands, legs, ankles, or feet
- Injury to an arm or leg, which was likely related to falls
- Skin cuts, which were likely related to falls
- Pain in the back of the throat
- Low blood sodium levels (hyponatremia)
- Abnormal coordination
- Tickling, tingling, burning, pricking, or numbness of the skin
- Inappropriately elevated mood
- Any changes in mood.