asthma, glaucoma, enlarged prostate, cardiovascular disease, respiratory disease, or thyroid dysfunction Use with caution in patients with increased intraocular pressure or angle closure glaucoma Not for use to treat insomnia in children <12 years; may cause paradoxical excitation in young children CNS effects may be potentiated when used with other sedative drugs or ethanol Not for use unless patient has enough time for a full night’s sleep Ask healthcare professional before use if taking sedative or any other sleep-aid, tranquilizers, any other antihistamines, any other drugs When using this product avoid alcoholic beverages, do not drive a motor vehicle or operate machinery, take only at bedtime Pregnancy Category: B Lactation: excretion in milk unknownPregnancy Categories A: Generally acceptable. Controlled studies in pregnant women show no evidence of fetal risk. B: May be acceptable. Either animal studies show no risk but human studies not available or animal studies showed minor risks and human studies done and showed no risk. C: Use with caution if benefits outweigh risks. Animal studies show risk and human studies not available or neither animal nor human studies done. D: Use in LIFE-THREATENING emergencies when no safer drug available. Positive evidence of human fetal risk. X: Do not use in pregnancy. Risks involved outweigh potential benefits. Safer alternatives exist. NA: Information not available. Mechanism of Action Competes for H1-receptor sites on target cells; has anticholinergic effects, which depresses labyrinthine function, blocks chemoreceptor trigger zone, and diminishes vestibular stimulation Absorption Peak Plasma Time: 2-3 hr Peak Plasma Concentration: 100 ng/mL Elimination Half-Life: 10-12 hr Excretion: Urine BRAND FORM. UNIT PRICE PILL IMAGE Unisom (doxylamine) oral- 25 mg tabletSleep Aid (doxylamine) oral- 25 mg tabletSleep Aid (doxylamine) oral- 25 mg tabletNighttime Sleep-Aid (doxylamine) oral- 25 mg tabletWal-Som (doxylamine) oral- 25 mg tabletCopyright © 2010 First DataBank, Inc.Print Patient Educationdoxylamine succinate oral DOXYLAMINE - ORAL (dox-IL-a-meen) COMMON BRAND NAME(S): Unisom Sleep Aid USES: Doxylamine is an antihistamine, used to relieve symptoms of allergy, hay fever, and the common cold. This medication works by blocking certain natural substances (histamine, acetylcholine) that your body makes. This effect helps to relieve allergy/cold symptoms such as watery eyes, runny nose, and sneezing. Doxylamine is also used to help you relax and fall asleep.Cough-and-cold products have not been shown to be safe or effective in children younger than 6 years. Do not use this product to treat cold symptoms in children younger than 6 years unless specifically directed by the doctor. Also, do not give the 25 milligram tablets to children younger than 12 years, unless directed by the doctor. Ask your doctor or pharmacist for more details about using your product safely.These products do not cure or shorten the length of the common cold and may cause serious side effects. To decrease the risk for serious side effects, carefully follow all dosage directions. Do not use this product to make a child sleepy. Do not give other cough-and-cold medication that might contain the same or similar ingredients (see also Drug Interactions section). Ask the doctor or pharmacist about other ways to relieve cough and cold symptoms (such as drinking enough fluids, using a humidifier or saline nose drops/spray). HOW TO USE: Follow all directions on the product package. If your doctor has prescribed this medication, take it as directed. If you have any questions, ask your doctor or pharmacist.Take this medication by mouth with or without food. This medication may be taken with food or milk if stomach upset occurs.If you are using the chewable form of this medication, chew thoroughly and then swallow.If you are using the liquid form of this medication, measure the dose carefully using a special measuring device/spoon. Do not use a household spoon because you may not get the correct dose.The dosage is based on your age, medical condition, and response to treatment. Do not increase your dose or take this medication more often than directed.To help you sleep, take this medication about 30 minutes before bedtime. If you continue to have difficulty sleeping for longer than 2 weeks, contact your doctor.If your condition lasts or gets worse, or if you think you may have a serious medical problem, get medical help right away. SIDE EFFECTS: Drowsiness, dizziness, headache, constipation, stomach upset, blurred vision, decreased coordination, or dry mouth/nose/throat may occur. If any of these effects last or get worse, contact your doctor or pharmacist promptly.If your doctor has directed you to use this medication, remember that your doctor has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.Tell your doctor right away if you have any serious side effects, including: mental/mood changes (such as hallucinations, irritability, nervousness, confusion), ringing in the ears, trouble urinating, easy bruising/bleeding, fast/irregular heartbeat.Get medical help right away if you have any very serious side effects, including: seizure.A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.In the US -Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch.In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345. PRECAUTIONS: Before taking doxylamine, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.Before using this medication, tell your doctor or pharmacist your medical history, especially of: breathing problems (such as asthma, emphysema), a certain eye problem (glaucoma), heart problems, high blood pressure, liver disease, seizures, stomach problems (such as ulcers, blockage), overactive thyroid (hyperthyroidism), urination problems (such as trouble urinating due to enlarged prostate, urinary retention).This drug may make you dizzy or drowsy or blur your vision. Alcohol or marijuana (cannabis) can make you more dizzy or drowsy. Do not drive, use machinery, or do anything that needs alertness or clear vision until you can do it safely. Avoid alcoholic beverages. Talk to your doctor if you are using marijuana (cannabis).To minimize dizziness and lightheadedness, get up slowly when rising from a sitting or lying position.Liquid products may contain sugar. Caution is advised if you have diabetes. Ask your doctor or pharmacist about using this product safely.Older adults may be more sensitive to the side effects of this drug, especially drowsiness, dizziness, low blood pressure, confusion, constipation, or trouble urinating. Drowsiness, dizziness, and confusion can increase the risk of falling.Children may be more sensitive to the effects of antihistamines. In young children, this medication may cause agitation/excitement instead of drowsiness.This product is safe to use during pregnancy.Based on information from related drugs, this medication may pass into breast milk. Consult your doctor before breast-feeding. DRUG INTERACTIONS: Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.Some products that may interact with this drug include: antihistamines applied to the skin (such as diphenhydramine cream, ointment, spray).Tell your doctor or pharmacist if you are taking other products that cause drowsiness such as opioid pain or cough relievers (such as codeine, hydrocodone), alcohol, marijuana (cannabis), drugs for sleep or anxiety (such as alprazolam, lorazepam, zolpidem), muscle relaxants (such as carisoprodol, cyclobenzaprine), or other antihistamines (such as cetirizine, diphenhydramine).Check the labels on all your medicines (such as allergy or cough-and-cold products) because they may contain ingredients that cause drowsiness. Ask your pharmacist about using those products safely.This medication may interfere with certain lab tests (such as urine drug screening tests), possibly causing false test results. Make sure lab personnel and all your doctors know you use this drug. OVERDOSE: If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call their local poison control center at 1-800-222-1222. Canada residents can call a provincial poison control center. Symptoms of overdose may include: large pupils, flushing, fever, hallucinations, weakness, shaking (tremor), muscle twitching, loss of consciousness, seizures. In children, excitement may occur first, and may be followed by loss of coordination, drowsiness, loss of consciousness, seizures. NOTES: Do not take for several days before allergy testing because test results can be affected.Keep all medical and lab appointments. MISSED DOSE: Not applicable. STORAGE: Refer to storage information printed on the package. If you have any questions about storage, ask your pharmacist. Keep all products away from children and pets.Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company. Information last revised January 2023. Copyright(c) 2023 First Databank, Inc. IMPORTANT: HOW TO USE THIS INFORMATION: This is a summary and does NOT have all possible information about this product. This information does not assure that this product is safe, effective, or appropriate for you. This information is not individual medical advice and does not substitute for the advice of your health care professional. Always ask your health care professional for complete information about this product and your specific health needs.