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Diphenhydramine hydrochloride side effects

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  1. istering Steroids for Your Dog's Itch Toda
  2. constipation. increased sensitivity of the skin to the sun. itching. hives. sensation of spinning or whirling. difficulty sleeping. low energy. excessive sweating. chills
  3. e: oral capsules and tablets, parenteral injection. Side effects include
  4. e hydrochloride. Common side effects include weight increased among females and drug abuse among males. The phase IV clinical study is created by eHealthMe based on 9,172 reports from the FDA, and is updated regularly
  5. e HCl (Sleep) oral side effects by likelihood and severity Does Diphenhydra
  6. e hydrochloride, also called diphenhydra
  7. e) is an antihista

Your Itchy Dog May be Allergic - Steroids May Not be the Answe

  1. e HCl . View Free Coupon . NIGHTTIME SLEEP AID Side Effects by Likelihood and Severity . COMMON side effects RARE side effects If experienced,.
  2. e use can cause long-term adverse side effects that result in permanent damage. Not only will prolonged use cause harm, but it can lead to other aspects such as dependence on the medication. Common long-term side effects of prolonged diphenhydra
  3. e is an antihista
  4. e is an antihista
  5. istration (FDA) is warning that taking higher than recommended doses of the common over-the-counter (OTC) allergy medicine diphenhydra
  6. e is not approved at single doses greater than 50 mg. Higher doses cause significant anticholinergic effects, including dry mouth, impaired sweating and heat dissipation, and most importantly, increases in blood pressure. 150 mg of diphenhydra
  7. e, can cause serious side effects or death in young children. Do not give these products to children younger than 4 years of age. If you give these products to children 4 to 11 years of age, use caution and follow the package directions carefully

Common and Rare Side Effects for diphenhydramine ora

Diphenhydramine Side Effects: Common, Severe, Long Term

  1. e hydrochloride and have Night sweats. It is created by eHealthMe based on reports of 9,168 people who have side effects when taking Diphenhydra
  2. e is also called by the brand names Histergan, Nytol Original, Nytol One-A-Night and Sleepeaze
  3. e are drowsiness, dry mouth, constipation, blurry vision, thickenened secretions, impaired coordination
  4. e is a potent anticholinergic agent and potential deliriant in higher doses. This activity is responsible for the side effects of dry mouth and throat, increased heart rate, pupil dilation, urinary retention, constipation, and, at high doses, hallucinations or delirium
  5. e is extensively metabolized in the liver. Metabolism may be reduced in the presence of hepatic impairment. Those with significant hepatic disease receiving H1-antagonists should be monitored for liver function and side effects. Dosage reduction may be required in these patients

With the use of any drug, there are also risks of serious side effects. These occur more rarely. When using diphenhydramine, these may include: Anaphylaxis (severe allergic reaction including difficulty breathing Diphenhydramine abuse is not alone. Some other antihistamines are also taken for the sedating or hallucination effects. It has been estimated that the first generation of antihistamines developed in the 1940s and 1950s pass into the central nervous system, meaning that the possibility of side effects are greater Diphenhydramine hydrochloride is available without a prescription. Depending on your prescription plan, this medication may be covered by your insurance. Talk with your pharmacist about the most cost-effective options for getting this medication. Possible Side Effects of Diphenhydramine Hydrochloride (Benadryl®

Diphenhydramine is a first-generation antihistamine that blocks the effects of histamine, a chemical created by the immune system. An increase in histamine release generally occurs when your immune system overreacts to allergens, such as pollen, pet dander, or a drug, especially in allergic reactions Diphenhydramine is a type of medicine called an antihistamine. It is used in some allergy and sleep medicines. Overdose occurs when someone takes more than the normal or recommended amount of this medicine. This can be by accident or on purpose. This article is for information only. DO NOT use it to treat or manage an actual overdose Diphenhydramine hydrochloride, also known as Benadryl, is an antihistamine that's commonly used to treat canine allergies.Although it's not officially licensed for veterinary use, it's the most commonly used canine antihistamine. Let's look at how diphenhydramine helps an allergic dog combat his symptoms, what its common side effects may be and if there are situations in which its use. Diphenhydramine hydrochloride: diphenhydramine hydrochloride. We study 10,536 Diphenhydramine hydrochloride users. The information eHealthMe analyzes includes: - Effectiveness of Diphenhydramine hydrochloride - 121 alternative drugs to Diphenhydramine hydrochloride - 3,175 Diphenhydramine hydrochloride side effects and drug interaction

Diphenhydramine can cause powerful side effects even when taken as directed, so it is vital to read the directions and learn what the signs of an overdose are. Common Side Effects of Diphenhydramine Diphenhydramine is considered an H1 receptor antagonist, and it works by blocking the effect of histamine in the body Diphenhydramine is an ethanolamine-derivative antihistamine. It is an antihistamine with anticholinergic and marked sedative effects. It acts by inhibiting the effects on H1-receptors. Diphenhydramine is effective in reducing sleep onset (i.e. time to fall asleep) and increasing the depth and quality of sleep Background Diphenhydramine hydrochloride is a commonly prescribed medicine in hospitalized patients, but its adverse effects on older patients remain unclear.. Methods We enrolled 426 hospitalized medical patients aged 70 years or older in a prospective cohort study in a university hospital. Measurements included baseline and daily assessments including Mini-Mental State Examination scores.

Diphenhydramine Hydrochloride is the hydrochloride salt form of diphenhydramine, an ethanolamine and first-generation histamine antagonist with anti-allergic activity. Diphenhydramine hydrochloride competitively blocks H1receptors, thereby preventing the actions of histamine on bronchial smooth muscle, capillaries, and gastrointestinal (GI) smooth muscle The following are comments from users that experienced side effects while taking Milnacipran Hydrochloride Benadryl I started taking this medicine about 3 years ago to help me sleep,which it does do that but, I cannot sleep without it.So yes it can be habit forming

Summary: We compare the side effects and drug effectiveness of Diphenhydramine hydrochloride and Hydroxyzine hydrochloride. The phase IV clinical study is created by eHealthMe based on reports (from sources including the FDA) of 195,560 people who take Diphenhydramine hydrochloride and Hydroxyzine hydrochloride, and is updated regularly Antihistamines may be helpful in short-term situations (say, for a few days at a time when stress, travel or other disruptions cause you to toss and turn), but it's important to stress that this isn't the medication's intended use, said Martin Reed, a certified clinical sleep health expert and founder of Insomnia Coach.And switching to an OTC sleep drug that happens to contain. Diphenhydramine hydrochloride is an antihistamine with anticholinergic (drying) and sedative side effects. Antihistamines appear to compete with histamine for cell receptor sites on effector cells. Diphenhydramine hydrochloride in the injectable form has a rapid onset of action. Diphenhydramine hydrochloride is widely distributed throughout th Side Effects and Adverse Reactions Use the lowest effective dose of diphenhydramine HCl to lessen side effects and adverse reactions. These may include: • Drowsiness • Sedation • Dry mouth • Excitability • Restlessness • Dizziness Brands of Diphenhydramine HCl Here are some common brand names you may want to try Diphenhydramine is a sedating antihistamine. Side effects might include daytime drowsiness, dry mouth, blurred vision, constipation and urinary retention. Doxylamine succinate (Unisom SleepTabs). Doxylamine is also a sedating antihistamine. Side effects are similar to those of diphenhydramine. Melatonin

Diphenhydramine hydrochloride side effects by duration

  1. e should not be used in newborns or premature infants because of an increased risk of side effects. It should not be used for common cold symptoms in children less than 6 years of age due to the risk of serious side effects, such as slow/shallow breathing
  2. e Hydrochloride Injection is a sterile, nonpyrogenic solution for intravenous or deep intramuscular use as an antihista
  3. e hydrochloride is an antihista
  4. e-induced acute liver injury in the absence of concomitant medications. A 28-year-old man with history of 13/14-chromosomal translocation presented with fevers, vomiting, and jaundice
  5. e
  6. e hydrochloride, makes you drowsy and irritable and if you take too high a dose or an overdose, you will end up in hospital, Fischer said
  7. e include drowsiness, dry mouth, headache or urination problems. For some people, the level of drowsiness they experience may be significant. Benadryl may rarely cause some to feel the opposite effect of excitability, but this is more common in children

Symptoms of diphenhydramine hydrochloride overdose can be divided into anti-cholinergic effects, CNS effects, cardiac toxicity, pulmonary toxicity and skin and musculoskeletal symptoms. 1. Anti-cholinergic symptoms. Anti-cholinergic delirium as evidenced by agitation, disorientation, confusion, poor short- term memory, meaningless motor. Side Effects What are the side effects of Benadryl (Diphenhydramine)?. Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips.

12.5-25 mg tid-qid PO or 5 mg/kg/day PO or 150 mg/m2 per day PO. Maximum daily dose 300 mg. Motion sickness: Give full dose prophylactically 30 min before exposure to motion and repeat before meals and at bedtime. Cough suppression: 2-6 yr: 6.25 mg q 4 hr, not to exceed 25 mg in 24 hr. 6-12 yr: 12.5 mg q 4 hr PO, not to exceed 75 mg in. Learn about side effects, warnings, dosage, and more. Benadryl (diphenhydramine) is a brand-name, over-the-counter product that's typically used to relieve symptoms of hay fever (seasonal. Best KN95 Mask: http://bit.ly/bestkn95mask ALL Recommended Products: https://healthusher.com/best My NUMBER 1 Drug Reference: https://amzn.to/39Kd2gO. Diphenhydramine topical (Benadryl Itch) is an over-the-counter (OTC) product used for temporary relief of pain and itching associated with insect bites, minor skin irritations, and rashes. Learn about dosages, side effects, drug interactions, warnings, and precaustions Summary. Diphenhydramine ( Benadryl) is an OTC and prescription injection medication used to treat: hay fever, hives, allergic conjunctivitis, motion sickness, and mild cases of Parkinsonism. Side effects, drug interactions, dosage, storage, and pregnancy safety information should be reviewed prior to taking this medication

Common and Rare Side Effects for Diphenhydramine HCl

Diphenhydramine Hydrochloride / Ammonium Chloride/ Sodium Citrate (12.5mg/130mg/60mg per 5ml) 1 What is in this leaflet • 1. (gastric outlet obstruction)What BENNATUSS EXPECTORANT is used for 2. How BENNATUSS EXPECTORANT works 3. Before you use BENNATUSS EXPECTORANT 4. How to use BENNATUSS EXPECTORANT 5. While you are using it 6. Side effects 7 Diphenhydramine hydrochloride is an antihistamine with anticholinergic (drying) and sedative side effects. Antihistamines appear to compete with histamine for cell receptor sites on effector cells. Diphenhydramine hydrochloride in the injectable form has a rapid onset of action Before using Diphenhydramine Hydrochloride Syrup, inform your doctor about your current list of medications, over the counter products (e.g. vitamins, herbal supplements, etc.), allergies, pre-existing diseases, and current health conditions (e.g. pregnancy, upcoming surgery, etc.).Some health conditions may make you more susceptible to the side-effects of the drug

Diphenhydramine hydrochloride 2 % Topical Cream side effects. All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome: Dizziness; drowsiness; dry mouth, throat, and nose; thickening of mucus in nose or throat Vetadryl 10/30 is a flavored tablet containing diphenhydramine HCl formulated specifically for dogs and cats. Directions for use: Diphenhydramine HCl has been used as an aid in the management of allergies, insect bites, motion sickness, travel anxiety, and other conditions

What are the Most Common Diphenhydramine Side Effects

In the short-term, side effects of diphenhydramine can include dizziness, drowsiness, confusion, blurred vision, sedation, difficulty urinating, constipation, and low blood pressure . Multiple high-quality human trials have shown that diphenhydramine impairs cognitive functions such as alertness [4] , attention [5] , memory [5] [6] [7. Diphenhydramine Hydrochloride (diphenhydramine HCL): 25 to 50 mg orally every 4 to 6 hours as needed Maximum dose: 300 mg/day Parenteral: 10 to 50 mg deep IM or IV as needed, and may increase to 100 mg if require

ZzzQuil Nighttime Sleep-Aid (Procter & Gamble

Diphenhydramine hydrochloride is an antihistamine with anticholinergic (drying) and sedative side effects. Antihistamines appear to compete with histamine for cell receptor sites on effector cells. Diphenhydramine hydrochloride in the injectable form has a rapid onset of action. Diphenhydramine is widely distributed throughout the body. Diphenhydramine is an antihistamine which can be obtained both via a prescription and over-the-counter ().Diphenhydramine can be used to treat allergic reactions, insomnia, cough, motion sickness and Parkinsonism. Diphenhydramine is available under the following different brand names: Benadryl, Benadryl Allergy Dye-Free LiquiGels, Children's Benadryl Allergy, Children's Triaminic Thin Strips.

Side Effects of Benadryl (Diphenhydramine), Warnings, Use

A: Diphenhydramine HCl comes in 25 mg and 50 mg strengths (Benadryl is a common brand). For adults and teens, the diphenhydramine dosage is 25 to 50 mg every 4 to 6 hours. The maximum amount you should take in one day is 300 mg. Keep in mind, taking higher doses can increase the risk of side effects, including drowsiness Diphenhydramine Oral capsule drug summary. Find medication information including related drug classes, side effects, patient statistics and answers to frequently asked questions. Visit cvs.com for more details Sedation, dry mouth, and urine retention are some of the side effects dogs may experience when taking Benadryl or diphenhydramine. Older dogs may experience stronger side effects than younger dogs. Some dogs may react differently and thus the dosage may need to be tailored to your dog Ibuprofen, Diphenhydramine Hydrochloride Oral capsule, liquid filled drug summary. Find information including related drug classes, side effects, patient statistics and answers to frequently asked questions. Visit cvs.com for more details

Common and Rare Side Effects for NightTime Sleep Aid

The correct dosage of diphenhydramine for dogs depends on their weight. A small dog will need much less than a big dog to receive the same positive effects. According to the Merck Veterinary Manual, the safe dosage is 2-4 milligrams of medication per kilogram of weight, or 0.9 to 1.8 milligrams per pound The following are comments from users that experienced side effects while taking Milnacipran Hydrochloride Diphenhydramine Hydrochloride Side Effects: Pt became anxious, crying, screaming Diphenhydramine is commonly used in over-the-counter medicines to treat hay fever and other allergies, help reduce occasional sleeplessness, or relieve skin irritations and itching. Learn about the uses, side effects, and safety tips for diphenhydramine Diphenhydramine is a first-generation histamine H1 receptor antagonist (H1 antihistamine) that is widely available as a non-prescription, over-the-counter (OTC) medication. As an OTC medication, diphenhydramine is typically formulated as tablets and creams indicated for use in treating sneezing, runny nose, itchy/watery eyes, itching of nose or throat, insomnia, pruritis, urticaria, insect. The following are comments from users that experienced side effects while taking Milnacipran Hydrochloride Diphenhydramine Hydrochloride I took this before I went to bed at 10:30, and was awake until 2:00 a.m. with being wired up and having restless leg syndrome (which I've never had before)

If these symptoms should occur, inject 50 mg Benadryl ® (diphenhydramine hydrochloride) intramuscularly, and they usually will subside. Cogentin ® (benztropine mesylate), 1 to 2 mg intramuscularly, may also be used to reverse these reactions. If these side effects occur at any time during metoclopramide therapy, the drug should be. Benadryl Side Effects (Diphenhydramine) Benadryl (diphenhydramine) is an antihistamine medication used primarily in the treatment of allergies. Its sedative properties have also made it popular as a non-prescription sleep aid The following are comments from users that experienced side effects while taking Diphenhydramine Hydrochloride Fatigue bit pricey, tolerance builds quickly works, at first, minimal side effects Works great at first, but tolerance develops quickly Unisom is essentially 'Tylenol PM' without the.. side effects. Drowsiness, dizziness, constipation, stomach upset, blurred vision, or dry mouth/nose/throat may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.To relieve dry mouth, suck (sugarless) hard candy or ice chips, chew (sugarless) gum, drink water, or use a saliva substitute.If your doctor has. These are not all the possible side effects of Benadryl. For more information, ask your doctor or pharmacist. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. DESCRIPTION. Benadryl® Allergy contains the histamine-blocker diphenhydramine

Diphenhydramine (Benadryl, Diphenhist, Unisom, Zzzquil) is an antihistamine used to treat symptoms of seasonal allergies including sneezing, runny nose, and itching or watering eyes.It is also used as an over-the-counter sleep aid. It is available in generic and brand versions. The lowest GoodRx price for the most common version of diphenhydramine is around $2.23, 61% off the average retail. Diphenhydramine Side Effects. Diphenhydramine(DPH), is the active compound found in Benadryl. In addition to its antihistamine activity used to alleviate symptoms and signs of seasonal allergy, it also has potent anticholinergic action. Anticholinergic, means that DPH blocks the effects of acetylcholine The phase IV clinical study analyzes which people take Diphenhydramine hydrochloride and have Erection problems. It is created by eHealthMe based on reports of 9,168 people who have side effects while taking Diphenhydramine hydrochloride from the FDA, and is updated regularly (Diphenhydramine Hydrochloride) Read all of this leaflet before you start taking this medicine because it contains Common side effects (may affect up to 1 in 10 people): • Sedation, drowsiness, dizziness, unsteadiness, inattention • Dry mouth • Fatigu Generic Name: Diphenhydramine hydrochloride Brand Names: Benadryl Other Brand Names: Aler-Tab, Allergy, Allermax, Altaryl, Children's Allergy, Diphen Cough, Diphenhist, Dytuss, Q-Dryl, Siladryl, Silphen Cough, Simply Sleep, Sleep-ettes, Sominex Maximum Strength Caplet, Theraflu Thin Strips Multi Symptom, Triaminic Thin Strips Cough & Runny Nose, Unisom Sleepgels Maximum Strength, Valu-Dryl

What Are the Short & Long-Term Effects of Diphenhydramine Use

Some common side effects include drowsiness, dry eyes and mouth or dizziness. Benadryl is a brand name of the drug diphenhydramine HCL 1. Some common side effects include drowsiness, dry eyes and mouth or dizziness. Effects on Prostate. Benadryl can also adversely affect your prostate 1 Does anyone know of any awful side effects from chronic use of diphenhydramine? which is stronger: doxylamine succinate or diphenhydramine? Ritalin effects on young people zoloft side effects What is the difference between Diphenhydramine Citrate and Diphenhydramine Hydrochloride? how much diphenhydramine is an overdose? cocaine use and impotenc What is Benadryl? Benadryl (diphenhydramine) is an oral over-the-counter antihistamine medication.Many people use it for seasonal allergies, also known as hay fever, and to treat symptoms of the common cold.Some also use it to treat hives and motion sickness. Like other first-generation (older) antihistamines, Benadryl can make you very sleepy.For that reason, it is also used as a sleep aid

Benadryl®Children's Allergy - FDA prescribing information, side

Diphenhydramine Uses, Dosage & Side Effects - Drugs

I took 50 mg of diphenhydramine HCL and 50 mg of hydroxyzine HCL. Am I going to have a reaction? While the main side effects of both of these medications is sedation. Toss, Solomon takes 50 mg of each of these medications is likely to feel quite tired afterwards. However, for most individuals this will be the main and only side effect DIPHENHYDRAMINE HYDROCHLORIDE (dye-fen-hye'dra-meen) Allerdryl , High incidence of drowsiness, but GI side effects are minor. Effects in parkinsonism and drug-induced extrapyramidal symptoms are apparently related to its ability to suppress central cholinergic activity and to prolong action of dopamine by inhibiting its reuptake and storage. Diphenhydramine hydrochloride presents additive side effects if combined with CNS depressants such as hypnotics, sedatives, tranquilizers, and the like, and also alcohol. MAO inhibitors, on the other hand, increases and prolongs the drying effects of antihistamines

Sleep Aid (Diphenhydramine) Oral: Uses, Side Effects

Common side effects of Benadryl include sleepiness, fatigue, dizziness, headache, dry mouth, and difficulty urinating or an enlarged prostate and diphenhydramine stories. This medication may cause blurred vision and may impair your thinking or reactions and diphenhydramine hydrochloride powder Can taking 25 mg of diphenhydramine HCl nightly as a sleep aid cause harmful and irreversible side effects if taken - Answered by a verified Health Professional. We use cookies to give you the best possible experience on our website Diphenhydramine hydrochloride is a first-generation H1 antihistamine and has been used since the 1940s. H1 refers to the type of cell receptors it works on in the brain, while first-generation. Side Effects. The most common side effects of diphenhydramine are sedation and drowsiness. Other side effects include dry mouth, urinary retention, and rarely, diarrhea, excitement, tremors and seizures, and loss of appetite. Precautions. Individual horses may react differently to diphenhydramine and dosage should be based on the horse's age.

Diphenhydramine hydrochloride cream side effects. Do not wash your hands after use if putting this on your hand. Further information Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances Diphenhydramine (also known as DPH, Dimedrol, Benadryl, and many others) is a deliriant substance of the ethanolamine class. Diphenhydramine is a first-generation H1 antihistamine that is widely used as a generic, over-the-counter medication to treat allergies. When exceeding approved doses, diphenhydramine produces powerful deliriant effects Diphenhydramine is an antihistamine, meaning that it blocks the effect of histamine at the H1 receptor sites, and is used for a wide range of effects, ranging from allergy and itching relief, to sleep aids, to nausea relief. However, in addition to its antihistamine effect, it also has powerful, anticholinergic effects Druginformer Identified Side Effects: Chest discomfort, Anxiety, Visual impairment, Dyspnoea, Muscle twitching. Posted By Anonymous in askapatient.com on October 28, 2014 @ 12:00 am Side Effects: I was given Benadryl by IV while in the ER. After 3-5 mins I starting having chest discomfort and difficulty breathing which caused a severe. Diphenhydramine Hydrochloride comes usually comes in 25mg and 50 mg tablets and taking more than that will increase your risk of complications however many users can easily take 100 mg without any real concern for saftey. Advil®PM: Side Effects and Interaction

FDA warns about serious problems with high doses of the

You may report side effects to FDA at 1-800-FDA-1088. What other drugs will affect diphenhydramine? Ask a doctor or pharmacist before using diphenhydramine with any other medicines, especially drugs that can cause drowsiness (such as opioid medication, sleep medicine, a muscle relaxer, or medicine for anxiety or seizures) If any of the side effects gets serious, or if you notice any side effects not listed in this leaflet, please tell your doctor or pharmacist What this medicine is for This medicine contains Diphenhydramine Hydrochloride which belongs to a group of medicines called antihistamines, which act to relieve the symptoms of allergies Before using Diphenhydramine Hydrochloride Tablet, inform your doctor about your current list of medications, over the counter products (e.g. vitamins, herbal supplements, etc.), allergies, pre-existing diseases, and current health conditions (e.g. pregnancy, upcoming surgery, etc.).Some health conditions may make you more susceptible to the side-effects of the drug Before using Diphenhydramine Hydrochloride, inform your doctor about your current list of medications, over the counter products (e.g. vitamins, herbal supplements, etc.), allergies, pre-existing diseases, and current health conditions (e.g. pregnancy, upcoming surgery, etc.).Some health conditions may make you more susceptible to the side-effects of the drug Diphenhydramine is given by mouth or as an injection and is used on and off label to treat allergic reactions, motion sickness, and to induce sedation. Side effects include sleepiness, and less commonly dry mouth and gastrointestinal upset. Diphenhydramine should not be used in pets that are allergic to this medication and should be used cautiously in pets with glaucoma, enlarged prostate.

Dozol (paracetamol and diphenhydramine)Contrast Allergy PreMed Pack - FDA prescribing information

Is diphenhydramine dangerous if taken nightly as a sleep aid

diphenhydramine hydrochloride. 1. What Desentol is and what it is used for. Desentol is used for various types of allergic reactions such as hives, hay fever, or allergic pruritus. Desentol contains an antihistamine (diphenhydramine) that counteracts and alleviates allergic symptoms. Diphenhydramine also has a calming effect Diphenhydramine hydrochloride is an antihistamine with anticholinergic (drying) and sedative side effects. Antihistamines appear to compete with histamine for cell receptor sites on effector cells. Diphenhydramine hydrochloride in the injectable form has a rapid onset of action. Diphenhydramine i

Oxycodone Hydrochloride

FREQUENCY: Repeat every 6 hours as needed ADULT DOSAGE: 50 mg CHILDREN'S BENADRYL FASTMELTS: Each fastmelt tablet contains the equivalent of 12.5 mg of Diphenhydramine HCL and dosed the same as chewable tablets RISK of SIDE EFFECTS: May cause drowsiness and paradoxical excitatory.Use caution when driving or operating heavy machinery after dosing due to potential for sedation and decreased. THE POWERFUL antihistamine action of benadryl hydrochloride N. N. R. (diphenhydramine hydrochloride) has been repeatedly demonstrated in animals 1 and in human beings 2 with 3 and without 4 allergic diseases. The frequency of the side effects of the drug, when given in adequate amounts by mouth, has led to the following investigation of its topical use for diseases in which cutaneous. Diphenhydramine, Zinc Acetate Topical cream drug summary. Find medication information including related drug classes, side effects, patient statistics and answers to frequently asked questions. Visit cvs.com for more details