Before using this medication, l your doctor or pharmacist your medical history, especially of: kidney disease, liver disease.
This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details. Before taking lamotrigine, l your doctor or pharmacist if you are allergic to it; or if you have any other allergies.
Other than age, there are as yet no factors identified that are known to predict the risk of occurrence or the severity of rash caused by LAMICTAL. However, cases have occurred in the absence of these factors. There are suggestions, yet to be proven, that the risk of rash may also be increased by (1) coadministration of LAMICTAL with valproate (includes valproic acid and divalproex sodium), (2) exceeding the recommended initial dose of LAMICTAL, or (3) exceeding the recommended dose escalation for LAMICTAL.
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Lamotrigine's chemical name is 3,5-diamino-6-(2,3-dichlorophenyl)-as-triazine, its molecular formula is Cl 2, and its molecular weight is 256.09. Lamotrigine is a white to pale cream-colored powder and has a pKa of 5.7. LAMICTAL (lamotrigine), an AED of the phenyltriazine class, is chemically unrelated to existing AEDs. The structural formula is:. Lamotrigine is very slightly soluble in water (0.17 mg/mL at 25°C) and slightly soluble in 0.1 M HCl (4.1 mg/mL at 25°C).
"Jan. 8, 2013 -- People with epilepsy have a higher risk for migraines, and now new research offers evidence of a genetic link between the two conditions.
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Lamotrigine may cause severe or life-threatening skin rash, especially in children and in people who take too high.
2 Lake (200-mg tablet only). 6 Lake (100-mg tablet only); ferric oxide, yellow (150-mg tablet only); and FD&C Blue No. LAMICTAL Chewable Dispersible Tablets are supplied for oral administration. LAMICTAL Tablets are supplied for oral administration as 25-mg (white), 100-mg (peach), 150-mg (cream), and 200-mg (blue) tablets. The tablets contain 2 mg (white), 5 mg (white), or 25 mg (white) of lamotrigine and the following inactive ingredients: blackcurrant flavor, calcium carbonate, low-substituted hydroxypropylcellulose, magnesium aluminum silicate, magnesium stearate, povidone, saccharin sodium, and sodium starch glycolate. Each tablet contains the labeled amount of lamotrigine and the following inactive ingredients: lactose; magnesium stearate; microcrystalline cellulose; povidone; sodium starch glycolate; FD&C Yellow No.
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Accordingly, LAMICTAL should ordinarily be discontinued at the first sign of rash, unless the rash is clearly not drug related. Although benign rashes are also caused by LAMICTAL, it is not possible to predict reliably which rashes will prove to be serious or life threatening. Discontinuation of treatment may not prevent a rash from becoming life threatening or permanently disabling or disfiguring.
Report any new or worsening symptoms to your doctor, such as: mood or behavior changes, depression, anxiety, or if you feel agitated, hostile, restless, hyperactive (mentally or physically), or have thoughts about suicide or hurting yourself.
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Get emergency medical help if you have any of these signs of an allergic reaction: hives; fever; swollen glands; painful sores in or around your eyes or mouth; difficulty breathing; swelling of your face, lips, tongue, or throat.
In clinical trials of bipolar and other mood disorders, the rate of serious rash was 0.08% (0.8 per 1,000) in adult patients receiving LAMICTAL as initial monotherapy and 0.13% (1.3 per 1,000) in adult patients receiving LAMICTAL as adjunctive therapy. In worldwide postmarketing experience, rare cases of toxic epidermal necrolysis and/or rash-related death have been reported in adult and pediatric patients, but their numbers are too few to permit a precise estimate of the rate. The incidence of these rashes, which have included Stevens- Johnson syndrome, is approximay 0.8% (8 per 1,000) in pediatric patients (aged 2 to 16 years) receiving LAMICTAL as adjunctive therapy for epilepsy and 0.3% (3 per 1,000) in adults on adjunctive therapy for epilepsy. In a prospectively followed cohort of 1,983 pediatric patients (aged 2 to 16 years) with epilepsy taking adjunctive LAMICTAL, there was 1 rash-related death. LAMICTAL can cause serious rashes requiring hospitalization and discontinuation of treatment.
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This drug may make you dizzy or drowsy or cause blurred vision. Limit alcoholic beverages. Do not drive, use machinery, or do any activity that requires alertness or clear vision until you are sure you can perform such activities safely.
However, isolated cases have occurred after prolonged treatment (e.g., 6 months). Accordingly, duration of therapy cannot be relied upon as means to predict the potential risk heralded by the first appearance of a rash. Nearly all cases of life-threatening rashes caused by LAMICTAL have occurred within 2 to 8 weeks of treatment initiation.
The study confirmed that having a strong family history of epilepsy is a strong ".
Tablet characteristics including flavor, mouth-feel, after-taste, and ease of use were rated as favorable in a study in 108 healthy volunteers. LAMICTAL ODT Orally Disintegrating Tablets are formulated using technologies (Microcaps and AdvaTab) designed to mask the bitter taste of lamotrigine and achieve a rapid dissolution profile.
Epilepsy, Migraines May Have Family Ties »
Last reviewed on RxList: 1/28/2015 This monograph has been modified to include the generic and brand name in many instances. Share this Article:.
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The tablets contain 25 mg (white to off-white), 50 mg (white to off-white), 100 mg (white to off-white), or 200 mg (white to off-white) of lamotrigine and the following inactive ingredients: artificial cherry flavor, crospovidone, ethylcellulose, magnesium stearate, mannitol, polyethylene, and sucralose. LAMICTAL ODT Orally Disintegrating Tablets are supplied for oral administration.
Read the Epilepsy, Migraines May Have Family Ties article » LAMICTAL (lamotrigine) Tablets WARNING SERIOUS SKIN RASHES.