prescription drugs
Free drug information service 
All available medical information about prescription drugs 

Meridia

What is Meridia

Meridia affects chemicals in the body that are related to weight maintenance.

Meridia is used as a short-term supplement to diet and exercise in the treatment of obesity.

Meridia may also be used for purposes other than those listed in this medication guide.

General medical information about Meridia

Meridia has been reported to cause increased blood pressure in some patients. It is important to have your blood pressure and pulse monitored regularly while taking Meridia.

Use caution when driving, operating machinery, or performing other hazardous activities. Meridia may cause dizziness, difficulty concentrating, or restlessness. If you experience these effects, avoid hazardous activities.

Do not take any other prescription or over-the-counter medicines without first talking to your doctor, especially weight-loss products, tryptophan (L-tryptophan, 5-HTP), decongestants, antidepressants, cough suppressants, lithium (Eskalith, Lithobid, Lithonate, others), and migraine medicines.

What you should find out before taking Meridia

Do not take Meridia without first talking to your doctor if you
- have taken a monoamine oxidase inhibitor (MAOI) such as isocarboxazid (Marplan), tranylcypromine (Parnate), or phenelzine (Nardil) in the last 14 days;
- have anorexia nervosa;
- are taking an appetite suppressant;
- have high blood pressure;
- have heart disease, irregular heartbeats, congestive heart failure, or a history of stroke;
- have epilepsy or another seizure disorder;
- have gallstones;
- have glaucoma;
- have liver disease; or
- have kidney disease.

You may not be able to take Meridia, or you may require a dosage adjustment or special monitoring if you have any of the conditions listed above.

Meridia is in the FDA pregnancy category C. This means that it is not known whether Meridia will harm an unborn baby. Do not take Meridia without first talking to your doctor if you are pregnant or could become pregnant during treatment.

It is not known whether Meridia passes into breast milk. Do not take Meridia without first talking to your doctor if you are breast-feeding a baby.

The safety and effectiveness of Meridia have not been studied in children younger than 16 years of age.

How should take Meridia

Take Meridia exactly as directed by your doctor. If you do not understand these directions, ask your pharmacist, nurse, or doctor to explain them to you.

Take each dose with a full glass of water.

Meridia is usually taken once a day. Follow your doctor's instructions.

Meridia can be taken with or without food.

Never take more of this medication than is prescribed for you. Too much Meridia could be dangerous.

Meridia has been reported to cause increased blood pressure in some patients. It is important to have your blood pressure and pulse monitored regularly while taking Meridia.

Store Meridia at room temperature away from moisture and heat.

If you miss a dose:

Take the missed dose as soon as you remember. However, if it is almost time for the next dose, skip the missed dose and take only the next regularly scheduled dose. Do not take a double dose of this medication.

What happens if you overdose:

Seek emergency medical attention.

Symptoms of a Meridia overdose are not known.

Avoid while taking Meridia

Use caution when driving, operating machinery, or performing other hazardous activities. Meridia may cause dizziness, difficulty concentrating, or restlessness. If you experience these effects, avoid hazardous activities.

Do not take any other prescription or over-the-counter medicines without first talking to your doctor, especially weight-loss products, tryptophan (L-tryptophan, 5-HTP), decongestants, antidepressants, cough suppressants, lithium (Eskalith, Lithobid, Lithonate, others), and migraine medicines.

Possible side effects of Meridia

If you experience any of the following serious side effects, stop taking Meridia and seek emergency medical attention or contact your doctor immediately:
- an allergic reaction (difficulty breathing; closing of your throat; swelling of your lips, tongue, or face; or hives);
- an irregular heartbeat;
- high blood pressure (severe headache, blurred vision); or
- seizures.

Other, less serious side effects may be more likely to occur. Continue to take Meridia and talk to your doctor if you experience
- restlessness or tremor,
- nervousness or anxiety,
- mild headache or dizziness,
- insomnia,
- dry mouth or an unpleasant taste in your mouth, or
- constipation.

Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome.

What other drugs will affect Meridia

Do not take Meridia if you have taken a monoamine oxidase inhibitor (MAOI) such as isocarboxazid (Marplan), tranylcypromine (Parnate), or phenelzine (Nardil) in the last 14 days. A dangerous drug interaction may occur.

Before taking this medication, tell your doctor if you are taking
- lithium (Lithobid, Eskalith, Lithonate, others);
- almotriptan (Axert), naratriptan (Amerge), rizatriptan (Maxalt), sumatriptan (Imitrex), or zolmitriptan (Zomig);
- citalopram (Celexa), fluoxetine (Prozac), sertraline (Zoloft), paroxetine (Paxil), or fluvoxamine (Luvox);
- venlafaxine (Effexor), nefazodone (Serzone), mirtazapine (Remeron), or thioridazine (Mellaril);
- amitriptyline (Elavil, Endep), amoxapine (Asendin), clomipramine (Anafranil), desipramine (Norpramin), doxepin (Sinequan), imipramine (Tofranil), nortriptyline (Pamelor), protriptyline (Vivactil), or trimipramine (Surmontil);
- dihydroergotamine (D.H.E.);
- dextromethorphan (in many cough medicines);
- meperidine (Demerol);
- fentanyl (Duragesic); or
- pentazocine (Talacen, Talwin).

Meridia may interact with the medicines listed above and cause anxiety, restlessness, loss of consciousness, confusion, weakness, tremor, poor coordination, fever, shivering, sweating, vomiting, a fast heartbeat, and other symptoms. These reactions can be very dangerous and require medical attention. Do not take any other prescription or over-the-counter medicines without first talking to your doctor, especially weight-loss products, tryptophan (L-tryptophan, 5-HTP), decongestants, antidepressants, cough suppressants, lithium (Eskalith, Lithobid, Lithonate, others), or migraine medicines.

Drugs other than those listed here may also interact with Meridia. Talk to your doctor and pharmacist before taking any prescription or over-the-counter medicines.

All prescription drugs:

A
abilify accupril accutane acetaminophen aciphex actifed actonel actos acyclovir adalat adderall adipex advair advil albuterol alesse aleve allegra allopurinol amaryl ambien amiodarone amitriptyline amoxicillin amoxil amphetamine anacin aprazolam aricept asacol aspirin atenolol ativan atorvastatin atrovent augmentin avandia avapro avastin avelox azmacort
B
baclofen
bactrim bactroban baycol benadryl bextra biaxin boniva bontril buspar buspirone
C
caduet campral camptosar capoten captopril cardizem cardura carisoprodol casodex catapress cefzil celebrex celexa cellcept cephalexin cialis cipro ciprodex clarinex claritin climara clindamycin clonazepam clonidine codeine codeprex combivent combivir concerta copaxone coreg coricidin cotrim coumadin cozaar crestor cubicin cyclobenzaprine cymbalta
D
darvocet demerol depakote desogen detrol dextromethorphan diazepam diclofenac didrex diflucan digoxin dilantin diltiazem dimetapp diovan diprivan ditropan doxazosin doxycycline drixoral duragesic dyazide
E
effexor elavil elocon eloxatin emend enalapril enbrel endocet engerix-b entex epogen epzicom erbitux ertaczo ery-tab erythromycin estradiol evista 
F
fabrazyme famotidine fazaclo fenofibrate fioricet fiorinal flexeril flomax flonase flovent fluoxetine fosamax fosrenol furosemide  
G
gabapentin gamimune gemfibrozil gemzar glipizide glucophage glucotrol glucovance glyburide glyburide guaifenesin guaifenex 
H
herceptin humalog humira hydroxyzine hyzaar  
I
ibuprofen imdur imitrex imodium inderal insulin integrilin iressa 
K
kaletra keflex kenalog keppra ketek klonopin kytril  
L
lamictal lamisil lanoxin lantus lasix lescol levaquin levitra levothyroxine levoxyl lexapro lidoderm lipitor lisinopril lithium lorazepam lortab lotensin lotrel lotrisone lovenox lupron luveris  
M
macrobid magnevist meclizine medroxyprogesterone meridia metformin methadone methamphetamine methotrexate methylphenidate methylprednisolone metoclopramide metoprolol metronidazole miacalcin minocycline mobic monopril morphine motrin myfortic  
N
naproxen nasacort nasonex natrecor neulasta neupogen neurontin nexium nifedipine nitrofurantoin norco nortriptyline norvasc  
O
omeprazole omnicef orthovisc oxybutynin oxycodone oxycontin oxytrol  
P
paraplatin patanol paxil pegasys penicillin pepcid percocet percodan percogesic phendimetrazine phenergan phentermine phenytoin plavix plendil potassium pravachol prednisone premarin prempro prevacid prilosec prinivil procrit promethazine propecia propofol propoxyphene propranolol protonix proventil provigil prozac pseudoephedrine pulmicort  
R
ranitidine rebetol reglan relafen relpax remeron remicade renagel renova rhinocort riomet risperdal risperidone ritalin rituxan rocephin rogaine roxicet  
S
sanctura seasonale sensipar serevent seroquel serzone singulair skelaxin soma somavert sonata spiriva spironolactone strattera striant sustiva synagis synthroid 
T
tamoxifen tavist taxol taxotere tegretol temazepam tenormin tenuate tequin terazosin tetracycline tiazac tindamax titralac tobradex topamax toprol tramadol trazodone triamcinolone triaminic triamterene tricor trileptal trimox triphasil trizivir truvada tylenol 
U
ultane ultracet ultram uroxatral
V
valium valtrex vaniqa vasotec velcade verapamil viagra vicodin vicoprofen vidaza viracept viread vytorin  
W
warfarin wellbutrin  
X
xalatan xanax xenical xifaxan xolair xopenex xyrem  
Y
yasmin 
Z
zanaflex zantac zavesca zelnorm zemplar zerit zestoretic zestril zetia ziac zithromax zocor zofran zoladex zoloft zometa zorbtive zosyn zovirax zyrtec zyvox