Spironolactone and hydrochlorothiazide (Oral)
Medically reviewed by Drugs.com. Last updated on Mar 31, 2022.
This drug has been reported to be tumorigenic in rat chronic toxicity studies. Use this drug only as indicated. Fixed-dose spironolactone/hydrochlorothiazide is not indicated for the initial treatment of edema or hypertension .
Commonly used brand name(s)
In the U.S.
Available Dosage Forms:
Therapeutic Class: Diuretic, Potassium Sparing/Thiazide Combination
Pharmacologic Class: Aldosterone Receptor Antagonist
Chemical Class: Thiazide
Uses for spironolactone and hydrochlorothiazide
Spironolactone and hydrochlorothiazide combination is used to treat high blood pressure (hypertension). It may also be used to treat water retention (edema) in patients with congestive heart failure, liver cirrhosis, or a kidney disorder called nephrotic syndrome.
Spironolactone helps prevent your body from absorbing too much salt and keeps your potassium levels from getting too low. It can be used to prevent or treat hypokalemia (low potassium levels in the blood).
Spironolactone and hydrochlorothiazide are both diuretic medicines (water pills). They reduce the amount of water in the body by increasing the flow of urine, which helps lower the blood pressure.
Spironolactone and hydrochlorothiazide is available only with your doctor's prescription.
Before using spironolactone and hydrochlorothiazide
In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For spironolactone and hydrochlorothiazide, the following should be considered:
Tell your doctor if you have ever had any unusual or allergic reaction to spironolactone and hydrochlorothiazide or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.
Appropriate studies have not been performed on the relationship of age to the effects of spironolactone and hydrochlorothiazide combination in the pediatric population. Safety and efficacy have not been established.
No information is available on the relationship of age to the effects of spironolactone and hydrochlorothiazide combination in geriatric patients.
There are no adequate studies in women for determining infant risk when using this medication during breastfeeding. Weigh the potential benefits against the potential risks before taking this medication while breastfeeding.
Interactions with medicines
Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are taking spironolactone and hydrochlorothiazide, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.
Using spironolactone and hydrochlorothiazide with any of the following medicines is not recommended. Your doctor may decide not to treat you with this medication or change some of the other medicines you take.
- Potassium Citrate
Using spironolactone and hydrochlorothiazide with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.
- Amtolmetin Guacil
- Arsenic Trioxide
- Choline Salicylate
- Enalapril Maleate
- Flufenamic Acid
- Mefenamic Acid
- Niflumic Acid
- Nimesulide Beta Cyclodextrin
- Potassium Phosphate
- Salicylic Acid
- Sodium Salicylate
- Tiaprofenic Acid
- Tolfenamic Acid
Using spironolactone and hydrochlorothiazide with any of the following medicines may cause an increased risk of certain side effects, but using both drugs may be the best treatment for you. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.
- Aminolevulinic Acid
Interactions with food/tobacco/alcohol
Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. Discuss with your healthcare professional the use of your medicine with food, alcohol, or tobacco.
Other medical problems
The presence of other medical problems may affect the use of spironolactone and hydrochlorothiazide. Make sure you tell your doctor if you have any other medical problems, especially:
- Addison's disease (adrenal problem) or
- Anuria (not able to pass urine) or
- Hypercalcemia (high calcium in the blood) or
- Hyperkalemia (high potassium in the blood) or
- Kidney disease, severe or
- Liver disease, severe or
- Sulfa drug allergy, history of—Should not be used in patients with these conditions.
- Asthma, history of—May increase likelihood of having an allergic reaction.
- Diabetes or
- Electrolyte imbalances (eg, low chloride, magnesium, potassium, or sodium in the body) or
- Fluid imbalances (caused by dehydration, vomiting, or diarrhea) or
- Glaucoma, secondary angle-closure or
- Gout or
- Hyperlipidemia (high cholesterol or fats in the blood) or
- Kidney disease or
- Liver disease or
- Myopia (changes in the eyeball causing vision problems), acute or
- Systemic lupus erythematosus (SLE)—Use with caution. May make these conditions worse.
- Sympathectomy—Blood pressure–lowering effects of spironolactone and hydrochlorothiazide may be increased.
Proper use of spironolactone and hydrochlorothiazide
In addition to the use of spironolactone and hydrochlorothiazide, treatment for your high blood pressure may include weight control and changes in the types of foods you eat, especially foods high in sodium (salt) and potassium. Your doctor will tell you which of these are most important for you. You should check with your doctor before changing your diet.
Many patients who have high blood pressure will not notice any signs of the problem. In fact, many may feel normal. It is very important that you take your medicine exactly as directed and that you keep your appointments with your doctor even if you feel well.
Remember that spironolactone and hydrochlorothiazide will not cure your high blood pressure, but it does help control it. You must continue to take it as directed if you expect to lower your blood pressure and keep it down. You may have to take high blood pressure medicine for the rest of your life. If high blood pressure is not treated, it can cause serious problems such as heart failure, blood vessel disease, stroke, or kidney disease.
Swallow the tablet whole. Do not break, crush, or chew it.
The dose of spironolactone and hydrochlorothiazide will be different for different patients. Follow your doctor's orders or the directions on the label. The following information includes only the average doses of spironolactone and hydrochlorothiazide. If your dose is different, do not change it unless your doctor tells you to do so.
The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.
- For oral dosage form (tablets):
- For edema:
- Adults—At first, 100 milligrams (mg) each of spironolactone and hydrochlorothiazide per day, given in either single or divided doses. Your doctor may adjust your dose if needed.
- Children—Use and dose must be determined by your doctor.
- For high blood pressure:
- Adults—At first, 50 to 100 milligrams (mg) each of spironolactone and hydrochlorothiazide per day, given in either single or divided doses. Your doctor may adjust your dose if needed.
- Children—Use and dose must be determined by your doctor.
- For edema:
If you miss a dose of spironolactone and hydrochlorothiazide, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not double doses.
Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Keep from freezing.
Keep out of the reach of children.
Do not keep outdated medicine or medicine no longer needed.
Ask your healthcare professional how you should dispose of any medicine you do not use.
Precautions while using spironolactone and hydrochlorothiazide
It is very important that your doctor check your progress at regular visits to make sure spironolactone and hydrochlorothiazide is working properly and to decide if you should continue to take it. Blood and urine tests may be needed to check for unwanted effects.
Do not take other medicines unless they have been discussed with your doctor. This especially includes potassium supplements or salt substitutes containing potassium, certain diuretics (eg, amiloride, triamterene (Dyazide®, Dyrenium®, Maxzide®, Midamor®, Moduretic®), or other products containing spironolactone (Aldactone®).
Check with your doctor immediately if blurred vision, difficulty reading, eye pain, or any other change in vision occurs during or after treatment. This could be a sign of a serious eye problem. Your doctor may want an eye doctor to check your eyes.
Spironolactone and hydrochlorothiazide may cause dizziness, drowsiness, lightheadedness, or fainting, especially when you get up suddenly from a lying or sitting position. Make sure you know how you react to spironolactone and hydrochlorothiazide before you drive, use machines, or do anything else that could be dangerous until you know how spironolactone and hydrochlorothiazide affects you. If you feel dizzy, lie down so you do not faint. Then sit for a few moments before standing to prevent the dizziness from returning.
Check with your doctor right away if you become sick while taking spironolactone and hydrochlorothiazide, especially if you have severe or continuing nausea, vomiting, or diarrhea that does not stop. These conditions may cause you to lose too much water or salt and may lead to low blood pressure. You can also lose water by sweating, so drink plenty of water during exercise or in hot weather.
Spironolactone and hydrochlorothiazide may affect blood sugar levels. Check with your doctor if you notice a change in the results of your blood or urine sugar tests.
Spironolactone and hydrochlorothiazide may cause swelling of the breasts (gynecomastia) and breast pain in some patients. If you have questions about this, talk to your doctor.
Spironolactone and hydrochlorothiazide may increase your risk of getting skin cancer (eg, non-melanoma skin cancer). Avoid sun exposure. Use a sunscreen when you are outdoors. Avoid sunlamps and tanning beds. Talk to your doctor if you have concerns about this risk.
Alcohol, narcotic pain relievers, or sleeping pills may cause you to feel more lightheaded, dizzy, or faint when used with spironolactone and hydrochlorothiazide. Tell your doctor if you are drinking alcohol or using pain relievers or sleeping pills.
Do not take other medicines unless they have been discussed with your doctor. This especially includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal or vitamin supplements.
Spironolactone and hydrochlorothiazide side effects
Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor immediately if any of the following side effects occur:
Incidence not known
- Back or leg pains
- blistering, peeling, or loosening of the skin
- bloody or black, tarry stools
- bloody or cloudy urine
- blue lips and fingernails
- blurred vision
- burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
- chest pain or tightness
- clay-colored stools
- clear or bloody discharge from the nipple
- cough or hoarseness
- dark urine
- decreased appetite
- difficult, fast, or noisy breathing
- difficulty with swallowing
- dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
- fast or irregular heartbeat
- fever with or without chills
- flushed, dry skin
- fruit-like breath odor
- general body swelling
- general feeling of discomfort or illness
- greatly decreased frequency of urination or amount of urine
- hives or welts, skin rash
- increased hunger
- increased thirst
- inverted nipple
- joint pain, stiffness, or swelling
- lower back or side pain
- lump in the breast or under the arm
- muscle cramps or pain
- nausea and vomiting
- numbness, tingling, pain, or weakness in the hands, feet, or lips
- painful or difficult urination
- pains in the stomach, side, or abdomen, possibly radiating to the back
- persistent non-healing sore
- pink growth
- pinpoint red or purple spots on the skin
- puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
- red, irritated eyes
- reddish patch or irritated area
- redness or swelling of the breast
- redness, soreness, or itching skin
- shiny bump
- sore on the skin of the breast that does not heal
- sores, ulcers, or white spots on the lips or in the mouth
- stomach cramping, burning, or tenderness
- swelling of the face, hands, fingers, feet, or lower legs
- swollen, painful, or tender lymph glands in the neck, armpit, or groin
- trouble breathing
- unusual bleeding or bruising
- unusual tiredness or weakness
- white, yellow or waxy scar-like area
- yellow eyes or skin
Get emergency help immediately if any of the following symptoms of overdose occur:
Symptoms of overdose
- Difficulty with sleeping
- drowsiness to profound coma
- mood or other mental changes
- rash with flat lesions or small raised lesions on the skin
Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
Incidence not known
- Absent, missed, or irregular menstrual periods
- bleeding after menopause
- burning feeling in the chest or stomach
- discoloration of the skin
- feeling of constant movement of self or surroundings
- inability to have or keep an erection
- increased sensitivity of the skin to sunlight
- muscle spasm
- sensation of spinning
- severe sunburn
- stomach upset
- stopping of menstrual bleeding
- swelling of the breasts or breast soreness in both females and males
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.
More about hydrochlorothiazide / spironolactone
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- Drug interactions
- Dosage information
- During pregnancy
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- Drug class: potassium sparing diuretics with thiazides
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