The brand Lamictal comes in four forms:
- Lamictal ODT (orally disintegrating tablets)
- Lamictal CD (chewable/dispersible)
- Lamictal XR, which is not approved for use in treating bipolar disorder and is not covered here
Available StrengthsLamictal comes in the following strengths. You should work with your doctor to figure out what dosage works best for you.
- Lamictal tablets: 25, 100, 150 and 200 mg
- Lamictal ODT tablets: 25, 50, 100 and 200 mg
- Lamictal CD tablets: 2, 5 and 25 mg
How to Take LamictalWhen taking Lamictal, it is important to follow any instructions your doctor has given you. In general, taking Lamictal is as follows:
- Lamictal tablets - Take as any other medication in pill form.
- Lamictal ODT - Orally disintegrating tablets should be placed onto the tongue and moved around in the mouth. The tablet will disintegrate rapidly, can be swallowed with or without water, and can be taken with or without food.
- Lamictal CD - Tablets may be swallowed whole, chewed, or dispersed in water or diluted fruit juice. If the tablets are chewed, consume a small amount of water or diluted fruit juice to aid in swallowing. To disperse Lamictal chewable dispersible tablets, add the tablets to a small amount of liquid (1 teaspoon, or enough to cover the medication). Approximately 1 minute later, when the tablets are completely dispersed, swirl the solution and consume the entire quantity immediately. No attempt should be made to administer partial quantities of the dispersed tablets.
Manufacturer's Recommended Lamictal DosagesStarter kits are available from the manufacturer for Lamictal and Lamictal ODT, and your doctor may provide you with one, along with instructions for when to begin increasing to the next dosage level. The recommended dosage varies depending on whether you are taking or not taking certain other drugs. Those drugs, listed with US brand names in parentheses, are:
- Sodium valproate or valproic acid (Depakene, Depakote and other brand names)
- Carbamazepine (Tegretol)
- Phenytoin (Dilantin)
- Phenobarbital (Luminol)
- Primidone (Mysoline)
As the table shows, it is essential to tell your doctor about all other medications you are taking when starting Lamictal therapy AND to keep your doctor informed of changes in your other medications.
Lamictal Dosage Table
For Patients TAKING Valproate
|For Patients NOT TAKING Carbamazepine, Phenytoin, Phenobarbital, Primidone, or Valproate||For Patients TAKING Carbamazepine, Phenytoin, Phenobarbital, or Primidone and NOT TAKING Valproate|
|Weeks 1 and 2||25 mg every other day||25 mg daily||50 mg daily|
|Weeks 3 and 4||25 mg daily||50 mg daily||100 mg daily, in divided doses|
|Week 5||50 mg daily||100 mg daily||200 mg daily, in divided doses|
|Week 6||100 mg daily||200 mg daily||300 mg daily, in divided doses|
|Week 7||100 mg daily||200 mg daily||up to 400 mg daily, in divided doses|
|Note: The manufacturer recommends increasing Lamictal if you stop taking Valproate, and increasing if you stop taking carbamazepine, phenytoin, phenobarbital or primidone. Always follow your doctor's instructions regarding dosages - do not make changes on your own.|
|Note: Oral contraceptives containing estrogen may affect the efficiency of Lamictal and require a dosage adjustment. Always tell your doctor if you are taking, start taking, or stop taking oral contraceptives containing estrogen.|