Health Guide

Lansoprazole and naproxen (Oral route)


lan-SOE-pra-zole, na-PROX-en

Brand Names:

  • Prevacid NapraPAC

Dosage Forms:

  • Tablet
  • Capsule, Delayed Release


Oral routeKit
    • NSAIDs may cause an increased risk of serious cardiovascular thrombotic events, myocardial infarction, and stroke, which can be fatal. This risk may increase with duration of use. Patients with cardiovascular disease or risk factors for cardiovascular disease may be at greater risk
  • Naproxen is contraindicated for the treatment of peri-operative pain in the setting of coronary artery bypass graft (CABG) surgery .
    • NSAIDs cause an increased risk of serious gastrointestinal adverse events including bleeding, ulceration, and perforation of the stomach or intestines, which can be fatal. These events can occur at any time during use and without warning symptoms. Elderly patients are at greater risk for serious gastrointestinal events .

NSAIDs may cause an increased risk of serious cardiovascular thrombotic events, myocardial infarction, and stroke, which can be fatal. This risk may be increased in patients with cardiovascular disease or risk factors for cardiovascular disease. Naproxen is contraindicated for the treatment of peri-operative pain in the setting of coronary artery bypass graft (CABG) surgery. NSAIDs can also cause an increased risk of serious gastrointestinal adverse events especially in the elderly, including bleeding, ulceration, and perforation of the stomach or intestines, which can be fatal .

Uses of This Medicine:

Lansoprazole and naproxen combination is used to relieve the symptoms of ankylosing spondylitis, osteoarthritis, and rheumatoid arthritis. It is used for patients who have had stomach ulcers and who need to take a nonsteroidal anti-inflammatory drug (NSAID) for arthritis.

Lansoprazole is a proton pump inhibitor (PPI) that is used to treat certain conditions (e.g., duodenal and gastric ulcers) where there is too much acid in the stomach. Naproxen is a nonsteroidal anti-inflammatory drug (NSAID) that is used to treat pain and the symptoms of arthritis, such as inflammation, swelling, stiffness, and joint pain.

This medicine is available only with your doctor's prescription.

Before Using This Medicine:

In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For this medicine, the following should be considered:


Tell your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.


Appropriate studies have not been performed on the relationship of age to the effects of lansoprazole and naproxen combination in the pediatric population. Safety and efficacy have not been established.

Older adults

Appropriate studies performed to date have not demonstrated geriatric-specific problems that would limit the usefulness of lansoprazole and naproxen combination in the elderly. However, elderly patients may be more sensitive to the effects of lansoprazole and naproxen combination than younger adults, and are more likely to have age-related kidney problems, which may require caution and an adjustment in the dose for patients receiving this medicine.


Pregnancy CategoryExplanation
All TrimestersCAnimal studies have shown an adverse effect and there are no adequate studies in pregnant women OR no animal studies have been conducted and there are no adequate studies in pregnant women.



There are no adequate studies in women for determining infant risk when using this medication during breastfeeding. Weigh the potential benefits against the potential risks before taking this medication while breastfeeding.


Studies in women suggest that this medication poses minimal risk to the infant when used during breastfeeding.

Other medicines

Using this medicine with any of the following medicines is not recommended. Your doctor may decide not to treat you with this medication or change some of the other medicines you take.

  • Ketorolac

Using this medicine with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.

  • Ardeparin
  • Atazanavir
  • Beta Glucan
  • Certoparin
  • Clopidogrel
  • Dalteparin
  • Danaparoid
  • Dasatinib
  • Delavirdine
  • Desirudin
  • Enoxaparin
  • Erlotinib
  • Ginkgo
  • Methotrexate
  • Mycophenolate Mofetil
  • Nadroparin
  • Nelfinavir
  • Parnaparin
  • Pemetrexed
  • Reviparin
  • Tacrolimus
  • Tinzaparin
  • Warfarin

Using this medicine with any of the following medicines may cause an increased risk of certain side effects, but using both drugs may be the best treatment for you. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.

  • Acenocoumarol
  • Acetohexamide
  • Alacepril
  • Aluminum Carbonate, Basic
  • Aluminum Hydroxide
  • Aluminum Phosphate
  • Amiloride
  • Azosemide
  • Bemetizide
  • Benazepril
  • Bendroflumethiazide
  • Benzthiazide
  • Bumetanide
  • Buthiazide
  • Calcium Carbonate
  • Candesartan Cilexetil
  • Canrenoate
  • Captopril
  • Chlorothiazide
  • Chlorpropamide
  • Chlorthalidone
  • Cilazapril
  • Citalopram
  • Clopamide
  • Clopidogrel
  • Clovoxamine
  • Cranberry
  • Cyclopenthiazide
  • Cyclosporine
  • Cyclothiazide
  • Delapril
  • Desvenlafaxine
  • Dicumarol
  • Dihydroxyaluminum Aminoacetate
  • Dihydroxyaluminum Sodium Carbonate
  • Duloxetine
  • Enalaprilat
  • Enalapril Maleate
  • Eprosartan
  • Escitalopram
  • Ethacrynic Acid
  • Femoxetine
  • Flesinoxan
  • Fluoxetine
  • Fluvoxamine
  • Fosinopril
  • Furosemide
  • Gliclazide
  • Glimepiride
  • Glipizide
  • Gliquidone
  • Glyburide
  • Hydrochlorothiazide
  • Hydroflumethiazide
  • Imidapril
  • Indapamide
  • Irbesartan
  • Lisinopril
  • Losartan
  • Magaldrate
  • Magnesium Carbonate
  • Magnesium Hydroxide
  • Magnesium Oxide
  • Magnesium Trisilicate
  • Methyclothiazide
  • Metolazone
  • Milnacipran
  • Moexipril
  • Nefazodone
  • Olmesartan Medoxomil
  • Paroxetine
  • Pentopril
  • Perindopril
  • Phenprocoumon
  • Piretanide
  • Polythiazide
  • Quinapril
  • Quinethazone
  • Ramipril
  • Sertraline
  • Spirapril
  • Spironolactone
  • Tasosartan
  • Telmisartan
  • Temocapril
  • Tolazamide
  • Tolbutamide
  • Torsemide
  • Trandolapril
  • Triamterene
  • Trichlormethiazide
  • Valsartan
  • Venlafaxine
  • Warfarin
  • Xipamide
  • Zimeldine
  • Zofenopril

Other interactions

Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. Discuss with your healthcare professional the use of your medicine with food, alcohol, or tobacco.

Other medical problems

The presence of other medical problems may affect the use of this medicine. Make sure you tell your doctor if you have any other medical problems, especially:

  • Anemia or
  • Bleeding problems or
  • Congestive heart failure or
  • Crohn's disease, history of or
  • Edema (fluid retention or body swelling) or
  • Heart attack, history of or
  • Heart disease or
  • Hypertension (high blood pressure) or
  • Kidney disease or
  • Liver disease or
  • Stomach ulcers or bleeding, history of or
  • Stroke, history of or
  • Ulcerative colitis, history of Use with caution. May make these conditions worse.
  • Aspirin-sensitive asthma or
  • Aspirin sensitivity, history of Should not be used in patients with these conditions.
  • Heart surgery (e.g., coronary artery bypass graft [CABG]) Should not be used to relieve pain right before or after the surgery.

Proper Use of This Medicine:

Use this medicine exactly as ordered by your doctor. Do not take more of it, do not take it more often, and do not take it for a longer time than ordered by your doctor. Taking too much of this medicine may increase the chance of unwanted effects, especially in elderly patients.

This medicine should come with a medication guide. Read and follow these instructions carefully. Ask your doctor if you have any questions.

This medicine is packaged as a kit. The kit contains two different medicines that are used together for 7 days or 28 days. Each daily dose consists of one Prevacid® capsule and two Naprosyn® tablets.

It is best to take this medicine on an empty stomach, but take your medicine with a glass of water.

Swallow the Prevacid® capsule whole. Do not break, crush, or chew it. If you are also taking sucralfate, take the Prevacid® capsule 30 minutes before sucralfate.


The dose of this medicine will be different for different patients. Follow your doctor's orders or the directions on the label. The following information includes only the average doses of this medicine. If your dose is different, do not change it unless your doctor tells you to do so.

The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.

  • For oral dosage forms (capsules and tablets):
    • For rheumatoid arthritis, osteoarthritis, and ankylosing spondylitis:
      • Adults One Prevacid® capsule and one Naprosyn® tablet in the morning before eating. Take the second Naprosyn® tablet in the evening.
      • Children Use and dose must be determined by your doctor.

Missed dose

If you miss a dose of this medicine, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not double doses.


Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Keep from freezing.

Keep out of the reach of children.

Do not keep outdated medicine or medicine no longer needed.

Ask your healthcare professional how you should dispose of any medicine you do not use.

Precautions While Using This Medicine:

It is very important that your doctor check your progress at regular visits. This will allow your doctor to see if the medicine is working properly and to decide if you should continue to take it. Blood and urine tests may be needed to check for unwanted effects.

Naproxen may raise your risk of having a heart attack or stroke. This is more likely in people who already have heart disease. People who use this medicine for a long time might also have a higher risk.

Naproxen may cause bleeding in your stomach or intestines. This problem can happen without warning signs. This is more likely if you have had a stomach ulcer in the past, if you smoke or drink alcohol regularly, if you are over 60 years of age, are in poor health, or are using certain other medicines (such as steroids or a blood thinner).

This medicine may cause a serious type of allergic reaction called anaphylaxis. Anaphylaxis can be life-threatening and requires immediate medical attention. Call your doctor right away if you have a rash; itching; hoarseness; trouble breathing; trouble swallowing; or any swelling of your hands, face, or mouth while you are using this medicine.

Serious skin reactions can occur during treatment with this medicine. Check with your doctor right away if you have any of the following symptoms while taking this medicine: blistering, peeling, loosening of the skin, chills, cough, diarrhea, fever, itching, joint or muscle pain, red skin lesions, sore throat, sores ulcers, white spots in the mouth or on the lips, or unusual tiredness or weakness.

Using this medicine during late pregnancy can harm your unborn baby. If you think you have become pregnant while using the medicine, tell your doctor right away.

Check with your doctor immediately if blurred vision, difficulty in reading, or any other change in vision occurs during or after your treatment. Your doctor may want you to have your eyes checked by an ophthalmologist (eye doctor).

Check with your doctor right away if you have any symptoms of liver problems including dark-colored urine or pale stools, nausea, vomiting, loss of appetite, pain in your upper stomach, or yellowing of your skin or the whites of your eyes.

This medicine may cause some people to become dizzy, drowsy, depressed, or less alert than they are normally. Make sure you know how you react to this medicine before you drive, use machines, or do anything else that could be dangerous if you are dizzy or not alert.

Before having any kind of surgery or medical tests, tell your doctor that you are taking this medicine. It may be necessary for you to stop the medicine for a while, or to change to a different nonsteroidal anti-inflammatory drug before your procedure.

Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal or vitamin supplements.

Side Effects of This Medicine:

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur:

More common
Abdominal or stomach pain, cramping, or burning
black, tarry stools
difficult or labored breathing
large, flat, blue, or purplish patches in the skin
pale skin
shortness of breath
skin blisters
tightness in the chest
troubled breathing with exertion
unusual bleeding or bruising
unusual tiredness or weakness
vomiting of blood or material that looks like coffee grounds
Less common
Irregular heartbeat
pinpoint red or purple spots on the skin
Abdominal or stomach fullness
abdominal or stomach pain with gas
ankle, knee, or great toe joint pain
arm, back, or jaw pain
back, leg, or stomach pains
bladder pain
bleeding from rectum or bloody stools
bleeding gums
blistering, burning, crusting, dryness, or flaking of the skin
blistering, peeling, or loosening of the skin
bloating or swelling of the face, arms, hands, lower legs, or feet
blood in the urine or stools
bloody nose
bloody or cloudy urine
blue lips and fingernails
blurred vision
body aches or pain
burning while urinating
burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
canker sores
change in consciousness
changes in menstrual periods
chest pain, discomfort, or burning
chest tightness or heaviness
clay-colored stools
cold, clammy skin
cold sweats
cool, pale skin
cough increased
cough or hoarseness
cough producing mucus
coughing or spitting up blood
coughing that sometimes produces a pink frothy sputum
cracks in the skin
dark-colored urine
decrease in the amount of urine
decreased frequency or amount of urine
decreased sexual ability in males
decreased urination
decreased urine output
difficult or troubled breathing
difficult, burning, or painful urination
difficult, fast, or noisy breathing, sometimes with wheezing
difficulty with swallowing
dilated neck veins
dizziness, faintness, or lightheadedness when getting up from a lying or sitting position suddenly
dry cough
dry mouth
dry skin and hair
dry, puffy skin
dryness or soreness of the throat
extreme fatigue
fast, irregular, pounding, or racing heartbeat or pulse
fast, weak pulse feeling
feeling of warmth or heat
fever with or without chills
fluid-filled skin blisters
flushed, dry skin
flushing or redness of the skin, especially on the face and neck
frequent strong or increased urge to urinate
frequent urge to defecate or urinate
fruit-like breath odor
general body swelling
general feeling of discomfort or illness
general feeling of tiredness or weakness
greatly decreased frequency of urination or amount of urine
hair loss
high blood pressure
high fever
inability to speak
increase in heart rate
increased blood pressure
increased clear or white vaginal discharge
increased hunger
increased need to urinate
increased sweating
increased thirst
increased urination
irregular, fast or slow, or shallow breathing
itching, scaling, severe redness, soreness, or swelling of the skin
joint or muscle pain
joint stiffness or swelling
kidney pain
large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
light-colored stools
lightheadedness, dizziness, or fainting
loss of appetite
loss of consciousness
loss of heat from the body
lower back or side pain
muscle cramps and stiffness
neck pain
noisy breathing
numbness or tingling in the hands, feet, or lips
pain in the ankles or knees
pain in the groin or genitals
pain or burning in the throat
pain or discomfort in the arms, jaw, back, or neck
pain or tenderness around the eyes and cheekbones
pain with swallowing
painful, red lumps under the skin, mostly on the legs
pains in the stomach, side, or abdomen, possibly radiating to the back
pale or blue lips, fingernails, or skin
passing of gas
passing urine more often
pounding in the ears
rapid weight gain
rapid, shallow breathing
rectal bleeding
recurrent fever
red skin lesions, often with a purple center
red, irritated eyes
red, swollen skin
redness, soreness, or itching skin
runny nose
scaly skin
sensitivity to the sun
severe and continuing nausea
severe or continuing stomach pain
severe or sudden headache
severe stomach pain, cramping, or burning
shakiness in the legs, arms, hands, or feet
sharp back pain just below ribs
skin thinness
slurred speech
sore throat
sores, ulcers, or white spots on the lips or tongue or inside the mouth
sores, welting, or blisters
stiff neck or back
stomach pain, continuing
stomach pain, fullness, or discomfort
straining while passing stool
sudden decrease in amount of urine
sunken eyes
swelling of the face, fingers, feet, or lower legs
swelling of the front part of the neck
swollen, painful, or tender lymph glands in the neck, armpit, or groin
temporary blindness
trouble with sleeping
trouble with swallowing
troubled breathing with exertion
unexplained bleeding or bruising
unexplained weight loss
unpleasant breath odor
unusual weight gain or loss
upper right abdominal pain
voice changes
watery or bloody diarrhea
weakness in the arm or leg on one side of the body, sudden and severe
weakness or heaviness of the legs
weight gain or loss
wrinkled skin
yellow eyes and skin
Incidence not known
Change in mental status
clay colored stools
decrease in frequency of urination
decreased appetite
difficulty in passing urine (dribbling)
difficulty with speaking
difficulty with swallowing
greatly decreased frequency of urination or amount of urine
pains in the stomach, side, or abdomen, possibly radiating to the back

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

More common
Absent missed or irregular menstrual periods
continuing ringing or buzzing or other unexplained noise in the ears
excess air or gas in the stomach or intestines
hearing loss
pain in the chest below the breastbone
passing gas
stopping of menstrual bleeding
Less common
Acid or sour stomach
change in hearing
disturbed color perception
double vision
feeling of constant movement of self or surroundings
loss of hearing
night blindness
overbright appearance of lights
seeing halos around lights
sensation of spinning
swelling or inflammation of the mouth
tunnel vision
Abnormal dreams
abnormal menses
abnormal stools
bad breath
blemishes on the skin
bone deformity
breast enlargement, pain, or tenderness
breath odor
burning feeling in the chest or stomach
burning, dry, or itching eyes
change in ability to see colors, especially blue or yellow
change in color vision
change in hearing
changes in vision
cold sweats
continuing ringing or buzzing or other unexplained noise in the ears
cool, pale skin
decrease in height
decrease or change in vision
decreased interest in sexual intercourse
decreased vision
difficulty seeing at night
discharge, excessive tearing
discoloration of the fingernails or toenails
double vision
drooping upper eyelids
enlarged abdomen
excessive muscle tone
eye pain
fecal discoloration
feeling of constant movement of self or surroundings
feeling of unreality
feeling sad or empty
fruit-like breath odor
hair loss or thinning of the hair
headache, severe and throbbing
heavy bleeding
impaired vision
inability to concentrate
inability to have or keep an erection
inability to move the legs or arms
increase in body movements
increased in sexual ability, desire, drive, or performance
increased interest in sexual intercourse
increased salivation
increased sensitivity of the skin to sunlight
itching of the vagina or genital area
lack of appetite
lack of feeling or emotion
lack or loss of strength
leg cramps
longer or heavier menstrual periods
loss of interest or pleasure
loss of memory
loss of strength or energy
mood or mental changes
mouth ulceration
muscle aching or cramping
muscle or bone pain
muscle tension or tightness
muscle weakness
neck pain or rigidity
pain during sexual intercourse
pain in the back, ribs, arms, or legs
paralysis of one side of the body
passing gas
pelvic pain
persistent non-healing sore
poor insight and judgment
problems with memory or speech
quick to react or overreact emotionally
rapidly changing moods
rash with flat lesions or small raised lesions on the skin
red-green color blindness
reddish patch or irritated area
redness or other discoloration of the skin
redness or swelling in the arms or legs
redness or swelling in the ear
redness, pain, or swelling of the eye, eyelid, or inner lining of the eyelid
redness, swelling, or soreness of the tongue
seeing double
seeing, hearing, or feeling things that are not there
sensation of spinning
sense of detachment from self or body
severe sunburn
shiny bump
skin disorder
sleep disorder
swelling of the breasts or breast soreness in both females and males
swelling or inflammation of the mouth
taste loss
thick, white vaginal discharge with no odor or with a mild odor
transient, mild, pleasant aromatic odor
trouble performing routine tasks, recognizing objects, thinking and planning, or walking
unexplained weight loss
urethral pain
white patches with diaper rash
white, yellow, or waxy scar-like area

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

Last Updated: 6/12/2013
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