What happens if I miss a dose (Qualaquin)?
Take the missed dose as soon as you remember. If you are more than 4 hours late for your dose, skip the missed dose and take the medicine at your next scheduled dose time. Do not take extra medicine to make up the missed dose.
What happens if I overdose (Qualaquin)?
Seek emergency medical attention or call the Poison Help line at 1-800-222-1222. Overdose symptoms may include severe forms of some of the side effects listed in this medication guide.
What should I avoid while taking quinine (Qualaquin)?
Avoid taking other anti-malaria medications without your doctor's advice. This includes chloroquine (Arelan), halofantrine (Halfan), and mefloquine (Lariam).
Avoid using antacids without your doctor's advice. Use only the type of antacid your doctor recommends. Some antacids can make it harder for your body to absorb quinine.
Quinine may cause blurred vision and may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be alert and able to see clearly.
Do not use quinine to treat any medical condition if your doctor did not prescribe quinine for that condition. Do not purchase quinine on the Internet or from vendors outside of the United States.
What other drugs will affect quinine (Qualaquin)?
Many drugs can interact with quinine. Below is just a partial list. Tell your doctor if you are using:
- acetazolamide (Diamox);
- arsenic trioxide (Trisenox);
- atorvastatin (Lipitor);
- bosentan (Tracleer);
- cimetidine (Tagamet) or ranitidine (Zantac);
- dextromethorphan (cough medicine);
- tacrolimus (Prograf);
- aminophylline (Phyllocontin, Truphylline) or theophylline (Elixophyllin, Theo-24, Theochron, Uniphyl);
- St. John's wort;
- an antibiotic, especially clarithromycin (Biaxin), erythromycin (E.E.S., EryPed, Ery-Tab, Erythrocin, Pediazole), levofloxacin (Levaquin), moxifloxacin (Avelox), pentamidine (NebuPent, Pentam), rifampin (Rifadin, Rifater, Rifamate), or tetracycline (Brodspec, Tetracap);
- an antidepressant, especially amitriptylline (Elavil, Vanatrip, Limbitrol), clomipramine (Anafranil), desipramine (Norpramin), or paroxetine (Paxil);
- ADHD medication;
- antifungal medication such as itraconazole (Sporanox) or ketoconazole (Nizoral);
- a blood thinner such as warfarin (Coumadin, Jantoven);
- heart rhythm medicine, especially amiodarone (Cordarone, Pacerone), dofetilide (Tikosyn), disopyramide (Norpace), dronedarone (Multaq), flecainide (Tambocor), ibutilide (Corvert), procainamide (Procan, Pronestyl), propafenone (Rythmol), quinidine (Quin-G), or sotalol (Betapace);
- heart or blood pressure medication, especially digoxin (digitalis, Lanoxin) or metoprolol (Toprol);
- HIV medications, especially ritonavir (Norvir, Kaletra), or saquinavir (Invirase);
- medicine to prevent or treat nausea and vomiting, such as dolasetron (Anzemet) or ondansetron (Zofran);
- cancer medicine (chemotherapy);
- medicines to treat psychiatric disorders, such as chlorpromazine (Thorazine), clozapine (FazaClo, Clozaril), haloperidol (Haldol), pimozide (Orap), thioridazine (Mellaril), or ziprasidone (Geodon);
- migraine headache medicine such as sumatriptan (Imitrex, Treximet) or zolmitriptan (Zomig);
- narcotic medication such as methadone (Methadose, Diskets, Dolophine);
- sedatives or tranquilizers; or
- seizure medication, especially carbamazepine (Carbatrol, Equetro, Tegretol), phenobarbital (Solfoton), or phenytoin (Dilantin).
This list is not complete and there are many other drugs that can interact with quinine. Tell your doctor about all medications you use. This includes prescription, over-the-counter, vitamin, and herbal products. Do not start a new medication without telling your doctor. Keep a list of all your medicines and show it to any healthcare provider who treats you.
Where can I get more information?
Your pharmacist can provide more information about quinine.
Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.
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