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Isosorbide Mononitrate ER Coupon - Isosorbide Mononitrate ER 30mg tablet
ImdurIsosorbide Mononitrate ER
ISOSORBIDE MONONITRATE is a vasodilator. It relaxes blood vessels, increasing the blood and oxygen supply to your heart. This medicine is used to prevent chest pain caused by angina. It will not help to stop an episode of chest pain. The lowest GoodRx price for the most common version of isosorbide mononitrate ER is around $4.00, 85% off the average retail price of $27.00. Compare nitrates.
Prescription Settings
30 tablets
Isosorbide Mononitrate ER Coupon - Isosorbide Mononitrate ER 30mg tablet
isosorbide mononitrate ER(generic)
30 tablets

Imdur Side Effects

What should I watch for?

Check your heart rate and blood pressure regularly while you are taking this medicine. Ask your doctor or health care professional what your heart rate and blood pressure should be and when you should contact him or her. Tell your doctor or health care professional if you feel your medicine is no longer working.

You may get dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. To reduce the risk of dizzy or fainting spells, do not sit or stand up quickly, especially if you are an older patient. Alcohol can make you more dizzy, and increase flushing and rapid heartbeats. Avoid alcoholic drinks.

Do not treat yourself for coughs, colds, or pain while you are taking this medicine without asking your doctor or health care professional for advice. Some ingredients may increase your blood pressure.


Common and Rare 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:

Less common

Abnormal heart sound

absence of or decrease in body movement

arm, back, or jaw pain

black, tarry stools

bladder pain

bleeding after defecation

bleeding gums

blood in the urine or stools

blurred vision

body aches or pain

burning while urinating

burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings

chest pain or discomfort

chest tightness or heaviness


cold sweats




cough or hoarseness

decreased urine


difficult or labored breathing

difficult, burning, or painful urination

dilated neck veins


dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position

dry mouth

ear congestion

extra heartbeats


fast, slow, irregular, pounding, or racing heartbeat or pulse

fever or chills

flu-like symptoms

frequent urge to urinate

frequent urination

general feeling of discomfort or illness


headache, severe and throbbing

heart murmur

increased need to urinate

increased sweating

increased thirst

increased volume of pale, dilute urine

irregular breathing

itching, pain, redness, or swelling on the leg

joint pain, stiffness, or swelling


loss of appetite

loss of voice

lower back, side, or stomach pain

muscle aches and pains

muscle cramps

nasal congestion

nausea or vomiting


numbness or tingling in the hands, feet, or lips

pain or discomfort in the arms, jaw, back, or neck

pain, tension, and weakness upon walking that subsides during periods of rest

partial or slight paralysis

passing urine more often

pinpoint red or purple spots on the skin

pounding in the ears

runny nose

shakiness in the legs, arms, hands, or feet



sore on the leg

sore throat

sudden decrease in the amount of urine



swelling of the face, fingers, feet, or lower legs

tightness in the chest

trembling or shaking of the hands or feet

trouble sleeping

troubled breathing

uncomfortable swelling around the anus

unusual bleeding or bruising

unusual tiredness or weakness

vomiting of blood or material that looks like coffee grounds


weight gain


Bluish-colored lips, fingernails, or palms

dark urine

pale skin

rapid heart rate

Get emergency help immediately if any of the following symptoms of overdose occur:

Symptoms of overdose

Blurred or loss of vision

bulging soft spot on the head of an infant

change in consciousness

change in the ability to see colors, especially blue or yellow

cold, clammy skin

disturbed color perception

double vision

feeling of constant movement of self or surroundings

halos around lights

headache, severe and throbbing

loss of consciousness

night blindness

overbright appearance of lights


sensation of spinning

tunnel vision

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:

Less common

Acid or sour stomach


back pain


blemishes on the skin


breast pain

burning feeling in the chest or stomach

burning, dry, or itching eyes

change in color vision

changes in vision

cold sweats



continuing ringing or buzzing or other unexplained noise in the ears

cough producing mucus

decreased interest in sexual intercourse

difficulty seeing at night

difficulty with moving

discharge, excessive tearing

double vision

drooping upper eyelids

dull ache or feeling of pressure or heaviness in the legs


excess air or gas in the stomach or intestines

feeling of constant movement of self or surroundings

feeling of warmth

feeling unusually cold

frequent urge to defecate

frozen shoulder

full feeling

hearing loss



inability to have or keep an erection

increased appetite

increased sensitivity of the eyes to sunlight

increased sputum



itching skin near damaged veins

lack or loss of strength

loss in sexual ability, desire, drive, or performance

muscle or bone pain

muscle stiffness or weakness


noisy breathing

pain or tenderness around the eyes and cheekbones

passing gas


poor concentration


redness of the face, neck, arms, and occasionally, upper chest

redness, pain, swelling of the eye, eyelid, or inner lining of the eyelid

redness, swelling, or soreness of the tongue


seeing double

sensation of spinning

sleepiness or unusual drowsiness

small clicking, bubbling, or rattling sounds in the lung when listening with a stethoscope

small lumps under the skin

sore mouth or tongue

stiff neck

stomach bloating, burning, cramping, or pain

stomach discomfort or upset

straining while passing stool

stuffy nose

sudden sweating

swollen feet and ankles

tender, swollen glands in the neck

tenderness in the stomach area

terrifying dreams causing sleep disturbances

tooth disorder

trouble swallowing

uncontrolled twisting movements of the neck

voice changes

weight loss

white patches in the mouth, tongue, or throat

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.

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