Effexor XR and Keppra are two medications frequently prescribed to patients, but for very different purposes. Effexor XR, a brand name of the medication venlafaxine, treats depression, generalized anxiety disorder, social anxiety disorder and panic disorder. Keppra XR, a brand name of the medication levetiracetam, is a anticonvulsant medication that used in conjunction with other medications to treat partial-onset seizures. Both medications may cause unpleasant side effects when used alone or taken together.
Effexor XR Side Effects
Sexual dysfunction, dizziness, drowsiness, unusual dreams, nausea, dry mouth, loss of appetite, constipation, flatulence, insomnia, nervousness, tremor, abnormal vision and increased sweating are common side effects of Effexor XR, according to the Effexor XR prescribing information. Although rare, serious side effects may also occur. These serious side effects may include seizures, fast or uneven heartbeats, high fever, rigid muscles, agitation, hallucinations, overactive reflexes, fainting, shallow or irregular breathing, chest tightness or easy bruising, according to Drugs.com. In addition, Effexor may cause a worsening of the symptoms of depression or anxiety, although this is rare. This worsening of symptoms may lead to increased hostility, agitation or aggressive behavior. It also may trigger thoughts of self-harm or suicide, particularly in adolescents and in people younger than 24 years old. Those experiencing any of these serious side effects should seek immediate medication addition.
Keppra XR Side Effects
The most common adverse reactions of Keppra XR include drowsiness and irritability, according to the Keppra XR prescribing information. Other side effects may include dizziness, headache, runny nose, sore throat or neck pain. Although rare, more serious side effects may also occur. These may include an increase or worsening of seizures, lack of coordination, weakness, nausea, stomach pain, itching, loss of appetite, clay-colored stools, dark urine, jaundice, fever, body aches, chills, flu symptoms and hallucinations, according to Drugs.com. Those experiencing any of these serious side effects should call a doctor immediately.
Interaction
Additional side effects can occur when Effexor XR and Keppra are taken at the same time. These side effects include respiratory effects and a depression of the central nervous systems, according to Drugs.com, and may be more likely to occur in elderly or debilitated patients. People taking these medications at the same time need to be carefully monitored by a doctor, and should avoid activities that require coordinator and mental alertness until they know how the two medications affect them.
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