Losartan (losartan potassium) - also sold under the brand name Cozaar - is a prescription only treatment for high blood pressure. If you are already using this medication and need a refill, use our online doctor and pharmacy service to get a 3-month repeat supply delivered to your doorstep.
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Written by Dr Kim Langdon, MD
Information last reviewed 07/15/19
Losartan (Cozaar generic), is from the category of drugs known as ‘angiotensin II receptor antagonists’ and is used to treat high blood pressure. Its onset of action is relatively fast and it works by multiple mechanisms. Angiotensin is a protein secreted by the kidney which is changed into other substances that cause the blood vessels to constrict, raising blood pressure. Under normal circumstances, this process is under control and results in normal blood pressure. When it is overactive or dysfunctional, high blood pressure can occur.
Losartan potassium is not the same thing as losartan potassium-hydrochlorothiazide (Hyzaar) which also has a diuretic effect when combined with the hydrochlorothiazide.
Cozaar (losartan potassium) works to relieve high blood pressure in five ways;
Losartan starts working about 6 hours after it is taken
It is not possible to quantify how effective Losartan is, however, it is generally quite effective at treating high blood pressure. In addition, it is effective at protecting the kidneys in the treatment of diabetic proteinuric kidney disease (diabetic nephropathy).
Losartan tablets contain the active ingredient losartan potassium which comes as 25 mg, 50 mg or 100 mg.
Losartan contains the following inactive ingredients: colloidal silicon dioxide, hydroxypropyl cellulose, hypromellose, lactose anhydrous, magnesium stearate, microcrystalline cellulose, pregelatinized starch, talc and titanium dioxide.
Please note: Inactive ingredients may vary across different generic manufacturers of Losartan.
Losartan potassium (Cozaar) is prescribed in the following dosages:
It is begun at 25 mg and increased to a maximum of 100 mg once daily or in divided doses. It can be taken anytime but usually, the morning is best.
The best time to take Losartan potassium is in the morning but if the side effects are bothersome, you can also take it at bedtime.
Take Losartan at the same time each day. It does not matter if it is taken with or without food.
If you are still within 12 hours of the time you were due for your dose, take the dose. If it is more than 12 hours, skip the dose, and take the next dose as usual. Do not take double the dose to make up for the missed dose.
As with any medicine, there are many side effects of losartan potassium but most of them are recorded as minor. Some losartan side effects are;
Do not take Losartan if any of the following apply to you.
Losartan Potassium is a generic drug made by multiple pharmaceutical companies such as Torrent Torrent Pharmaceuticals, Legacy and Aurobindo.
Losartan stays in your body for six to nine hours.
There is no difference. Losartan contains the active ingredient losartan potassium.
Losartan normally works within one hour of consumption.
25 mg, 50 mg and 100 mg tablets contain potassium in the following amounts: 2.12 mg (0.054 mEq), 4.24 mg (0.108 mEq) and 8.48 mg (0.216 mEq), respectively.
Torrent Pharmaceuticals Ltd., Sandoz, and Novartis have widened its recall of Losartan potassium and Losartan potassium/hydrochlorothiazide tablets. The reason is that tests found trace amounts of a potentially cancer-causing impurity called N-methylnitrosobutyric acid. Chinese manufacturers were alerted since this chemical is used in gasoline. The company is recalling 36 additional lots.
You can buy Losartan your regular doctor and obtain it through your local pharmacy or you can buy Losartan online using Medzino, one of our certified US physicians from your state will review your order and if appropriate, they will issue a prescription for our partner pharmacy to ship the medication to your chosen address.
Prices for Losartan can vary, Medzino offers a simple and affordable option to get a 3 month supply of Losartan without having to visit your doctor or your pharmacy, we take care of everything and deliver the FDA approved medication straight to your doorstep. Our pricing is fixed and transparent which is listed in the pricing table above.
Disclaimer: This is not medical advice. You and your physician will determine if and how you should take any medication prescribed to you following a medical consultation.
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