¿What are the possible side effects of Lasix?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Stop using Lasix and call your doctor at once if you have any of these serious side effects:

• dry mouth, thirst, nausea, vomiting; feeling weak, drowsy, restless, or light-headed; fast or uneven heartbeat; muscle pain or weakness; urinating less than usual or not at all; easy bruising or bleeding, unusual weakness; a red, blistering, peeling skin rash; hearing loss; or nausea, stomach pain, low fever, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes).
  

Continue taking Lasix and talk with your doctor if you have any of these less serious side effects:

• diarrhea, constipation, or stomach pain; headache; numbness, burning, pain, or tingly feeling; dizziness; or blurred vision.
  

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 Lasix?

If you take sucralfate (Carafate), take it at least 2 hours before or after you take Lasix. Before taking this medication, tell your doctor if you are using any of the following drugs:

• lithium; digoxin (Lanoxin); steroids (prednisone and others); ethacrynic acid (Edecrin); diet pills or cold medicine; other blood pressure medications; amikacin (Amikin), gentamicin (Garamycin), netilmicin (Netromycin), streptomycin, tobramycin (Nebcin, Tobi); salicylates such as aspirin, Disalcid, Doan's Pills, Dolobid, Salflex, Tricosal, and others; or indomethacin.

If you are using any of these drugs, you may not be able to use Lasix, or you may need dosage adjustments or special tests during treatment. There may be other drugs not listed that can affect Lasix. Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor.