If you forget a dose, most doctors and pharmacists recommend that you take it as soon as you remember. However, if you don’t remember until it is almost time for your next dose, only take one pill. Do not take two doses at the same time. This can cause you to lose too much fluid and potassium. Too little potassium in your blood can be life-threatening. Taking two doses can also cause your blood pressure to get too low. Check with your doctor to see what he or she recommends to do if you forget a dose.

The effects of chlorthalidone can last more than a day, so your blood pressure may not be affected if you miss one dose. Also, talk to your doctor and pharmacist about ways to remember to take your pill every day.

Try and take your medicine at the same time every day. Many people find pillboxes to be great reminders. Reminders or alarms on your mobile phone is another good idea. You can hang a calendar near the place you keep your pills and mark a day off the calendar every time you take a dose. There are also reminder tools available online and apps that you can put on your mobile devices.

If it's too close, don't take the dose!