Compare Captopril vs. Hydrochlorothiazide

Head-to-head comparisons of medication uses, side effects, ratings, and more.

Capoten
(Captopril)

Microzide
(Hydrochlorothiazide )

Lowers blood pressure. Captopril is a good blood pressure-lowering medicine that protects kidney function, but you have to take it on an empty stomach.Lowers blood pressure. Removes extra water from your body. Microzide (Hydrochlorothiazide (Hctz)) is a well-tolerated water pill that's often the first-choice treatment for mild high blood pressure.
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Reviews & ratings
Button Group. All currently active
Button Group. All currently active
3.8190476190476192Captopril
Reviews for Capoten (Captopril)
33%
of people say Capoten (Captopril) is worth it
25%
say it works well
26%
say it's a big hassle
Reviews for Microzide (Hydrochlorothiazide (Hctz))
47%
+14% vs. Capoten (Captopril)
31%
+6% vs. Capoten (Captopril)
15%
+11% vs. Capoten (Captopril)
Side effects
CaptoprilHydrochlorothiazide

The Captopril FDA package insert doesn’t have numbers about how common side effects are.

More about Captopril side effects »

The Hydrochlorothiazide FDA package insert doesn’t have numbers about how common side effects are.

More about Hydrochlorothiazide side effects »
How it works
CaptoprilHydrochlorothiazide
Captopril is an angiotensin converting enzyme (ACE) inhibitor. It blocks a chemical that tightens blood vessels. This makes blood vessels relax, which lowers blood pressure and allows more blood and oxygen to get to your heart and other organs.Microzide (Hydrochlorothiazide (Hctz)) is a thiazide diuretic (water pill). It works in the kidneys to make you urinate more, which removes extra water and certain electrolytes. This lowers blood pressure and swelling.
Type of medication
CaptoprilHydrochlorothiazide
Antihypertensive
ACE inhibitor
Prescription only
Antihypertensive
Diuretic
Prescription only
Available as
CaptoprilHydrochlorothiazide
  • Pill
  • Pill
Used for (click to learn more)
CaptoprilHydrochlorothiazide
Risk factors for serious side effects
CaptoprilHydrochlorothiazide
  • Women of childbearing age
    • African descent
    • Current kidney problems
    • Medicine that increase potassium
    • Use of salt substitute
    Detailed Capoten (Captopril) risks & warnings »
    • Current electrolyte imbalance
    • History of sulfa allergies
    • History of gout
    • Current kidney problems
      Detailed Microzide (Hydrochlorothiazide (Hctz)) risks & warnings »
      Pregnancy category
      CaptoprilHydrochlorothiazide
      DFDA pregnancy category (Weigh risks vs. benefits)

      Research studies with real people found harmful effects on unborn babies, but the benefits might outweigh the risks even if you’re pregnant. Talk with your doctor.

      See the FDA package insert
      BFDA pregnancy category (Probably safe)

      Research studies with animals haven’t found a risk to unborn babies, but it hasn’t been properly studied in humans.

      See the FDA package insert
      Alcohol
      No specific alcohol-related info.No specific alcohol-related info.
      Food
      No specific food-related info.No specific food-related info.
      Kidneys and liver
      • Protects kidney function, which is especially useful for people with diabetes or mild-to-moderate kidney disease.
      • Requires routine blood tests to check kidney function.
      • Doesn't work well in people with severe kidney problems.
      • Requires routine blood tests to check kidney function.
      Sex
      No specific sex-related info.No specific sex-related info.
      Sleep
      No specific sleep-related info.No specific sleep-related info.
      Weight
      No specific weight-related info.No specific weight-related info.
      Upsides and benefits
      CaptoprilHydrochlorothiazide
      • A first-choice blood pressure treatment for many people.
      • Protects kidney function, which is especially useful for people with diabetes or mild-to-moderate kidney disease.
      • Recommended for anyone with heart failure since it lowers the risk of death and further damage to your heart.
      • Lowers the risk of heart attack and stroke.
      • Works well to get rid of extra fluids in your body through urination.
      • A first-choice blood pressure treatment for many people. Works especially well for African Americans.
      • Good option if you have both high blood pressure and heart failure.
      • Raises calcium levels in the body, so it can be good for people with osteoporosis to slow down bone loss and even help with new bone formation.
      • Most people have very few side effects.
      • Lowers the risk of heart attack and stroke.
      Downsides and risks
      CaptoprilHydrochlorothiazide
      • Up to 1 in 10 people can get a dry cough with this medicine. It ranges from a mild tickle in the throat to a persistent hacking cough.
      • Compared to other ACE inhibitors, less flexible on when and how you take it. Captopril needs to be taken multiple times a day on an empty stomach.
      • Requires a yearly blood test to see how the medicine is affecting your body.
      • Not safe to use if you're pregnant.
      • Makes you urinate more often.
      • Doesn't work well in people with severe kidney problems.
      Tips from our pharmacists for people taking the medication
      CaptoprilHydrochlorothiazide
      • Take 1 hour before or 2 hours after eating.
      • Tell your doctor about any dizziness, fatigue, cough, or change in taste sensation that doesn't go away.
      • Don't take it if you're pregnant.
      • Can cause dizziness in the first few days.
      • Check your blood pressure 1 week after starting this medicine, and tell your doctor if it hasn't improved.
      • Requires routine blood tests to check kidney function.
      • Starts working in about 2 hours.
      • Makes you urinate more often, so avoid taking it at bedtime.
      • Tell your doctor about any dizziness, fatigue, or muscle weakness that doesn't go away.
      • Can cause dizziness in the first few days.
      • Check your blood pressure 1 week after starting this medicine, and tell your doctor if it hasn't improved.
      • Requires routine blood tests to check kidney function.
      Learn more
      More about CaptoprilSide effectsReviews & ratingsAlternativesFDA package insert
      More about HydrochlorothiazideSide effectsReviews & ratingsAlternativesFDA package insert