This information is for patients who are taking medicine. Do not take this medicine with food.
It is not known whether this medicine is absorbed through the lining of the stomach or whether it can pass into your bloodstream.
Do not crush, break, or chew this tablet. Swallow it whole.
Take this medicine with food unless your doctor tells you otherwise.
If you need surgery, tell the surgeon ahead of time if you have taken this medicine within the last few days.
Store at room temperature away from moisture and heat.
If you miss a dose, take it as soon as you remember. If it is near the time for your next dose, skip the missed dose and resume your usual dosing schedule. Do not double the dose to catch up.
Store this medicine at room temperature between 6877 degrees F (2025 degrees C) away from light and moisture. Store the vial of the liquid solution (liquid suspension) in a closed container away from light and moisture.
Keep your medicine in the foil packet until you are ready to use it. Store the foil packet tightly closed in a safe place. Do not store in the bathroom.
Keep your medicine near you when traveling by car, train, or on a flight.
When traveling by airplane, keep the following items in your carry-on luggage:
- Your medication
- The medication container and any accessories
Tips for taking this medicine
Follow all directions on your prescription label and read all medication guides or instruction sheets.
What happens if I miss a dose?
Since this medicine is taken when needed, you may not be on a dosing schedule. If you are taking the medicine regularly, you may be able to continue taking your regular doses even when you are off schedule. Continue to take the missed dose as soon as you remember.
What happens if I overdose?
Seek emergency medical attention or call the Poison Help line at 18002221222. Overdose may cause serious side effects.
What should I avoid while taking this medicine?
This medicine may cause blurred vision, which could lead to loss of vision.
Avoid drinking alcohol. It may increase your risk of experiencing drowsiness.
Avoid taking this medicine if you are pregnant. It may harm your developing baby.
What other drugs will affect this medicine?
This medicine can interact with many other medications. Tell each of your health care providers if you are taking any other medications, especially:
- Anticoagulants (blood thinners), such as warfarin (Coumadin)
- Antihistamines, such as cetirizine (Zyrtec), diphenhydramine (Benadryl), or fexofenadine (Allegra)
- Antibiotics, such as clarithromycin (Biaxin), clarithromycin and erythromycin (Eryc, Erythrocin), clarithromycin with clavulanate (Keflex), erythromycin with clavulanate (E-clav), telithromycin (Ketek)
- Antispasmodics, such as atropine
- Barbiturates, such as phenobarbital (Lemorin), phenytoin (Dilantin), or pentobarbital (Nembutal)
- Cholestyramine (Questran)
- Digoxin (Digitek)
- Digitalis (digitalis glycosides)
- Levothyroxine (Thyroxine)
- Metformin (Glucophage, Glumetza, generic)
- Metoclopramide (Reglan, Reglan XL)
- Niacin (Niaspan, Niaspan Forte)
- Phenytoin (Dilantin)
- Phenytoin and phenobarbital (Dilantin-PB, Dilantin-P, Phenobarbital-PB, Phenobarbital-XR, Phenytek, Thalomel)
- Probenecid (Benemid)
- Rifampicin (Rifadin)
- Sulfa drugs
- Thiazide diuretics
- Warfarin (Coumadin)
This list may not describe all possible interactions. Give your health care provider a list of all the medicines, herbs, non-prescription drugs, or dietary supplements you use. Also tell them if you smoke, drink alcohol, or use illegal drugs. Some items may interact with your medicine.
What should I watch for while using this medicine?
Tell your doctor or health care professional if your symptoms do not improve.
Do not take this medicine for longer than 5 days without speaking with your doctor.
Do not use this medicine for longer than 7 days if you have a fever, a stiff neck, or a headache that gets worse.
Do not use any other medicines that contain cimetidine (Tagamet), famotidine (Pepcid), or omeprazole (Prilosec) without talking to your doctor if you also take this medicine. These medicines can increase the effects of cimetidine, famotidine, or omeprazole.
What side effects may I notice from receiving this medicine?
Side effects that you should report to your doctor or health care professional as soon as possible:
- Allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
- Breathing problems
- Fast, irregular heartbeat
- Upset stomach
- Muscle pain
- Stuffy or runny nose
- Troubled breathing
- Unusual bleeding or bruising
- Unusual bleeding or bruising with easy bruising
- Yellowing of the eyes or skin
Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):
This list may not describe all possible side effects. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1800FDA-1088.
Where should I keep my medicine?
Keep out of the reach of children.
This drug is not expected to harm an unborn baby. However, this drug should not be used during pregnancy. Consult your doctor before using this medicine if you are pregnant.
This drug may play a role in causing or aggravating high blood pressure (hypertension). If you have this condition, you should not use this medicine. Tell your doctor if you have high blood pressure or any history of high blood pressure.
This drug may make you dizzy. Alcohol or marijuana (cannabis) can make you more dizzy. Do not drive, use machinery, or do anything that needs alertness until you can do it safely. Limit alcoholic beverages. Talk with your doctor if you are using marijuana (cannabis).
This medication may make you more sensitive to the sun. Avoid the sun if you do not know how it affects you.
This medication may cause a severe skin reaction. Stop using this medicine and consult your doctor if you have a severe skin reaction.
Overdose symptoms may include:
- Mental/mood changes, such as agitation, confusion, hallucinations, depression, or suicidal thoughts
- Muscle spasms
- Feeling very tired
- Very serious allergic reactions, including anaphylaxis, throat swelling, and difficulty breathing
If you are using this medicine for a long time, your doctor may change your dosage.
This medicine can affect your potassium level. This medicine can also increase your potassium level. This may cause symptoms of low potassium. Your doctor may check your potassium level if your potassium level is too high or too low.
Do not use this medicine for longer than directed by your doctor or healthcare professional. Do not use for longer than 5 days if you have a fever, a stiff neck, or a headache that gets worse.
If you are using this medicine for a long time, your doctor may change your dosage. Your doctor may also change your dose to manage the side effects that you are experiencing.
If you are taking this medicine for a long time or if you are taking it for a long time and your doctor increases your dose, tell your doctor or pharmacist promptly.
Do not stop taking this medicine suddenly. Doing so may cause serious side effects.
Tell your doctor if your symptoms do not improve or if they get worse.
Tell your doctor if your condition does not get better after using this medicine for several days.
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