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Prosom Side Effects

Generic Name: estazolam

Note: This page contains side effects data for the generic drug estazolam. It is possible that some of the dosage forms included below may not apply to the brand name Prosom.

For the Consumer

Applies to estazolam: oral tablet

As well as its needed effects, estazolam (the active ingredient contained in Prosom) may cause unwanted side effects that require medical attention.

Major Side Effects

If any of the following side effects occur while taking estazolam, check with your doctor immediately:

More common:
  • Absence of or decrease in body movement
  • clumsiness or unsteadiness
  • dizziness
  • sleepiness or unusual drowsiness
Less common:
  • Delusions
  • dementia
  • dry mouth
  • headache
  • mood or mental changes
  • nausea and vomiting
  • tiredness
  • Aggressive or angry
  • blood in the urine
  • bloody nose
  • bloody, black, or tarry stools
  • burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
  • chest pain
  • chills
  • convulsions
  • cough
  • crying
  • decrease in the amount of urine
  • decreased awareness or responsiveness
  • decreased reflexes
  • deep or fast breathing with dizziness
  • depersonalization
  • difficult or labored breathing
  • difficult urination
  • difficulty breathing
  • dryness or soreness of throat
  • dysphoria
  • fainting
  • false or unusual sense of well-being
  • fast, irregular, pounding, or racing heartbeat or pulse
  • fear or nervousness
  • feeling of warmth
  • fever
  • frequent strong or increased urge to urinate
  • hoarseness
  • increased urge to urinate during the night
  • irritability
  • lack of feeling or emotion
  • loss of bladder control
  • loss of memory
  • mouth sores or ulcers
  • muscle spasm or jerking of all extremities
  • noisy breathing
  • numbness of the feet, hands, and around mouth
  • paranoia
  • problems with memory
  • quick to react or overreact emotionally
  • rapidly changing moods
  • redness of the face, neck, arms, and occasionally, upper chest
  • restlessness
  • seeing, hearing, or feeling things that are not there
  • severe sleepiness
  • severe stomach pain
  • shakiness and unsteady walk
  • shakiness in the legs, arms, hands, or feet
  • shortness of breath
  • skin rash
  • sores, ulcers, or white spots on the lips or in the mouth
  • sudden loss of consciousness
  • swelling
  • swollen glands
  • swollen lymph nodes
  • tightness in the chest
  • trouble in swallowing
  • trouble sleeping
  • uncaring
  • uncontrolled eye movements
  • unsteadiness, trembling, or other problems with muscle control or coordination
  • unusual bleeding or bruising
  • unusual tiredness or weakness
  • voice changes
  • waking to urinate at night
  • wheezing
Incidence not known:
  • Blistering, peeling, or loosening of the skin
  • diarrhea
  • fever with or without chills
  • general feeling of tiredness or weakness
  • itching
  • joint or muscle pain
  • lower back or side pain
  • muscle cramps
  • red, irritated eyes
  • red skin lesions, often with a purple center
  • sleeplessness
  • sweating
  • unable to sleep

Minor Side Effects

Some estazolam side effects may not need any medical attention. As your body gets used to the medicine these side effects may disappear. Your health care professional may be able to help you prevent or reduce these side effects, but do check with them if any of the following side effects continue, or if you are concerned about them:

More common:
  • Lack or loss of strength
Less common:
  • Pain in the legs or feet
  • Blemishes on the skin
  • bloated
  • blurred vision
  • burning feeling in the chest or stomach
  • change in color vision
  • change in taste bad unusual or unpleasant (after) taste
  • changes in vision, especially night blindness
  • continuing ringing or buzzing or other unexplained noise in the ears
  • cramping in the lower abdomen, back, or legs
  • decreased interest in sexual intercourse
  • difficulty having a bowel movement (stool)
  • difficulty in moving
  • difficulty seeing at night
  • double vision
  • ear or eye pain
  • excess air or gas in stomach or intestines
  • full feeling
  • glare or snowy image caused by bright light
  • hearing loss
  • hives or welts
  • inability to have or keep an erection
  • increased or decreased appetite
  • increased sensitivity of eyes to sunlight
  • indigestion
  • loss in sexual ability, desire, drive, or performance
  • muscle pains or stiffness
  • pain in the arms, jaw, or neck
  • pain or tenderness around the eyes and cheekbones
  • pain, swelling, or redness in joints
  • passing gas
  • pimples
  • red, sore eyes
  • redness of the skin
  • seeing double
  • sneezing
  • stomach upset
  • stuffy or runny nose
  • swelling of the breasts
  • tenderness in stomach area
  • weight gain or loss
  • white or brownish vaginal discharge
Incidence not known:
  • Increased sensitivity of skin to sunlight
  • redness or other discoloration of skin
  • severe sunburn

For Healthcare Professionals

Applies to estazolam: oral tablet


The most commonly reported side effects were somnolence, hypokinesia, dizziness, and abnormal coordination.[Ref]


Uncommon (0.1% to 1%): Allergic reaction[Ref]


Very common (10% or more): Somnolence (42%)
Common (1% to 10%): Anxiety, depression, abnormal dream, abnormal thinking
Uncommon (0.1% to 1%): Agitation, apathy, emotional lability, euphoria, hostility, sleep disorder
Rare (less than 0.1%): Hallucinations[Ref]

Nervous system

Very common (10% or more): Headache (16%)
Common (1% to 10%): Hypokinesia, nervousness, dizziness, abnormal coordination, hangover, confusion
Uncommon (0.1% to 1%): Amnesia, paresthesia, seizure, stupor, twitch
Rare (less than 0.1%): Ataxia, circumoral paresthesia, decreased reflexes, neuritis, nystagmus, tremor
Frequency not reported: Minor changes in EEG patterns[Ref]


Rare (less than 0.1%): Increased SGOT[Ref]


Very common (10% or more): Asthenia (11%)
Common (1% to 10%): Malaise, body pain
Uncommon (0.1% to 1%): Chills, fever, ear pain, perverse taste, tinnitus
Rare (less than 0.1%): Edema, decreased hearing[Ref]


Common (1% to 10%): Cold symptoms, pharyngitis
Uncommon (0.1% to 1%): Asthma, cough, dyspnea, rhinitis, sinusitis
Rare (less than 0.1%): Epistaxis, hyperventilation, laryngitis[Ref]


Common (1% to 10%): Constipation, dry mouth, nausea, dyspepsia
Uncommon (0.1% to 1%): Decreased appetite, flatulence, gastritis, increased appetite, vomiting
Rare (less than 0.1%): Enterocolitis, melena, ulceration of the mouth[Ref]


Uncommon (0.1% to 1%): Flushing, palpitation
Rare (less than 0.1%): Arrhythmia, syncope[Ref]


Uncommon (0.1% to 1%): Rash, sweating, urticaria
Rare (less than 0.1%): Acne, dry skin
Postmarketing reports: Stevens-Johnson syndrome, photosensitivity[Ref]


Rare (less than 0.1%): Thyroid nodule[Ref]


Uncommon (0.1% to 1%): Frequent urination, menstrual cramps, urinary hesitancy, urinary urgency, vaginal discharge/itching
Rare (less than 0.1%): Swollen breast, decreased libido, hematuria, nocturia, oliguria, penile discharge, urinary incontinence[Ref]


Rare (less than 0.1%): Leukopenia, purpura, swollen lymph nodes
Postmarketing reports: Agranulocytosis[Ref]


Uncommon (0.1% to 1%): Thirst
Rare (less than 0.1%): Weight gain, weight loss[Ref]


Common (1% to 10%): Lower extremity pain, back pain, stiffness
Uncommon (0.1% to 1%): Neck pain, upper extremity pain, arthritis, muscle spasm, myalgia
Rare (less than 0.1%): Jaw pain, arthralgia[Ref]


Uncommon (0.1% to 1%): Abnormal vision, eye irritation, eye pain, eye swelling, photophobia
Rare (less than 0.1%): Diplopia, scotomata[Ref]


1. "Product Information. ProSom (estazolam)." Abbott Pharmaceutical, Abbott Park, IL.

It is possible that some side effects of Prosom may not have been reported. These can be reported to the FDA here. Always consult a healthcare professional for medical advice.

Disclaimer: Every effort has been made to ensure that the information provided is accurate, up-to-date and complete, but no guarantee is made to that effect. In addition, the drug information contained herein may be time sensitive and should not be utilized as a reference resource beyond the date hereof. This material does not endorse drugs, diagnose patients, or recommend therapy. This information is a reference resource designed as supplement to, and not a substitute for, the expertise, skill , knowledge, and judgement of healthcare practitioners in patient care. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate safety, effectiveness, or appropriateness for any given patient. does not assume any responsibility for any aspect of healthcare administered with the aid of materials provided. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the substances you are taking, check with your doctor, nurse, or pharmacist.