Whitehouse Station, NJ: Merck & Co., Inc.;2014 January. © 2005-2020 Healthline Media a Red Ventures Company. These are available at most pharmacies.There are other drugs available to treat your condition. It comes with serious risks if you don’t take it as prescribed.If you think you’ve taken too much of this drug, call your doctor or seek guidance from the American Association of Poison Control Centers at 800-222-1222 or through their Keep these considerations in mind if your doctor prescribes losartan/hydrochlorothiazide for you.A prescription for this medication is refillable. You may need to avoid potassium supplements and salt substitutes that contain potassium.You may need to purchase a blood pressure monitor to check your blood pressure at home. If you have trouble seeing or pain in your eyes, call your doctor and stop taking the drug right away.This drug can cause a severe allergic reaction. Losartan Potassium, Hydrochlorothiazide Oral tablet 100-12.5mg Drug Medication Dosage information. Also tell them about any vitamins, herbs, and supplements you use. Losartan/hydrochlorothiazide is a prescription medication. The dosage can be increased after 3 weeks of therapy to a maximum of 100/25 (losartan 100 mg/hydrochlorothiazide 25 mg) once daily as needed to control blood pressure [see Clinical Studies (14.2)].. Initiate a patient whose blood pressure is not adequately … Drug Interactions With Losartan When certain medications are taken together, it may result in negative drug interactions. If you have any of these medical problems, your doctor may monitor you closely when you receive your first dose.If you have a history of allergies or asthma, you may get a sensitivity reaction when you first start taking this drug. If they’re more severe or don’t go away, talk to your doctor or pharmacist.Call your doctor right away if you have serious side effects. In order for us to create your customized HealthSavvy programs, we need a little more information about the health topic(s) that you are interested in. Drug Interactions Losartan, administered for 12 days, did not affect the pharmacokinetics or pharmacodynamics of a single dose of warfarin. This means that losartan may not work as well.Taking losartan/hydrochlorothiazide with other drugs that work in the same way may increase your chance of low blood pressure, high potassium levels in your blood, and kidney damage.Losartan/hydrochlorothiazide can make your blood sugar levels increase. Losartan did not affect the pharmacokinetics of oral or intravenous digoxin. A lower blood pressure will increase the supply of blood and oxygen to the heart. It blocks a chemical that causes blood vessels to tighten. Losartan relaxes the blood vessels and lowers the blood pressure. eMedTV serves only as an informational resource. All rights reserved. It comes as an oral tablet. These drugs are often used to treat similar conditions.Hydrochlorothiazide is a type of drug called a thiazide Losartan/hydrochlorothiazide can cause mild or serious side effects. The starting dose is 50 mg losartan/12.5 mg hydrochlorothiazide or 100 mg losartan/12.5 mg hydrochlorothiazide, taken once per day.Your dosage may depend on the dosage of the blood pressure drug you were taking before. Symptoms include:If you develop these symptoms, call 911 or go to the nearest emergency room.Consuming drinks that contain alcohol can increase your risk of dizziness or lightheadedness from losartan/hydrochlorothiazide. In order for us to best serve you and provide you with the best information, can you please tell us if you currently have health insurance? Drug Interactions With Rosuvastatin Gemfibrozil, ketoconazole, and birth control pills are among the medications that can cause rosuvastatin drug interactions. Older adults may process drugs more slowly. 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