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124 Cards in this Set
- Front
- Back
Mechanism of Action for PDE-5 Inhibitors (Viagra, Levitra, Cialis)
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inhibits cGMP-specific PDE-5 enzyme that degrades cGMP in the corpus cavernosum. They enhance the effect of nitric oxide (NO) by inhibiting PDE-5 thereby increasing conc of cGMP which leads to relaxation of smooth muscle and flow of blood to the penis.
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When should a man take a PDE-5 Inhibitor?
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1 hour before intercourse
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What is the caution for pilots taking Viagra, Levitra, or Cialis?
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Alters blue-green colors, do not use 1 to 2 days before flying
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Patients taking these two class of medications should avoid taking PDE-5 inhibitors
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Nitrates: isordil (isosorbide dinitrate), Nitro S.L, ISMO, Imdur, nitrolingual spray, nitro-dur, amyl Nitrite, etc
Alpha-1 blockers |
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What are some drug interactions with PDE-5 inhibitors?
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hepatically metabolized by CYP3A4: cimetidine (OTC Tagamet HB), erythromycin, grapefurit juice INHIBIT CYP3A4=increase PDE-5 inhibitor levels=priapism!!
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Which PDE-5 Inhibitors should be taken on an empty stomach because fatty foods decrease absorption?
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Viagra (Sildenafil)
Levitra (Vardenafil) |
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Which PDE-5 Inhibitor can be taken with food and is longer acting (36-48 hour duration)
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Cialis (Tadalafil)
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The ED drug Viagra may also be used for? What is the other brand name of sildenafil citrate?
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Pulmonary Hypertension, 25 mg TID
Revatio 20 mg q8h |
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This causes local vasodilation and has no effect on the heart. Vasodilates SMM in vascular bed, induces erection
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MUSE - Medicated Urethra System for Erection
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Which formulation has the least dry mouth of the anticholinergic group?
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Oxytrol (3.9 mg oxybutynin) Transdermal Patch
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Mechanism of Action of Ditropan (Oxybutynin)
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Antispasmodic for bladder instability. Antimuscarinic (Atropine-like) actions on smooth muscle of the bladder. It inhibits the involuntary detrusor muscle contractions caused by muscle instability. This decreases urgency by delaying the initial desire to void.
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This drug for overactive bladder is selective for bladder (possibly less dry mouth)
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Detrol LA (Tolterodine) - 2 and 4 mg ER capsules, 1 and 2 mg tablets, possible less dry mouth than PO Ditropan
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This drug is similar to Detrol LA (tolterodine), they both have the same active metabolite
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Toviaz (fesoterodine) - 4mg and 8 mg QD
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What is the active isomer of atropine?
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Levsin (L-hyoscyamine) - anticholinergic for urinary tract and GI antispasmodic, also used as a sputum and saliva drying agent for terminally ill (hospice patients)
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Mechanism of Action for BPH - 5 Alpha reductase inhibitors
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Inhibit 5-alpha reductase, reduces formation of active form of testosterone (DHT). For symptomatic BPH in men with enlarged prostate to improve symptoms, reduce the risk of acute urinary retention, and reduce the risk of the need for BPH-related surgery.
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Prostate Specific Antigen is reduced by ___%. This happens when prostate volume decreases. When testing PSA lab #, ______ it to calculate prostate cancer risk.
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50%, double it
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This 5-alpha reductase inhibitor inhibits two forms of the 5-a reductase (Type 1 and Type 2). Advantage is that results are seen in __ weeks
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Avodart (Dutaseride), results seen in a few weeks (1 month)
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BPH products - alpha-1 Blockers MOA
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Inhibits alpha-1A receptor (urinary tract) - relatively more specific for smooth muscle in lower urinary tract than in blood vessels, but dizziness is still a ADR
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Should NOT take alpha agonists (Sudafed) or anticholinergics (Benadryl) with this medication
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Alpha-1 Blockers for BPH: Flomax (Tamsulosin), Uroxatral (Alfuzosin), Cardura XL (Doxazosin)
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Associated with Retrograde Ejaculation (occurs when semen enters the bladder instead of emerging through the penis during orgasm. Although you still reach sexual climax, you may ejaculate very little or no semen. This is called a dry orgasm. Retrograde ejaculation isn't harmful, but it can cause male infertility)
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Alpha-1 Blockers for BPH: Flomax (Tamsulosin), Uroxatral (Alfuzosin), Cardura XL (Doxazosin)
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Floppy Iris Syndrome is a complication of ________ and is a major concern with cataract surgery
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Mainly associated with Flomax (Tamsulosin) which is a selective alpha blocker that works by relaxing the bladder and prostatic smooth muscle. As such, it also relaxes the iris dilator muscle by binding to its postsynaptic nerve endings.
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These have a synergistic effect for BPH
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5 alpha-reductase inhibitors and alpha-1 blockers
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Causes urine color to change to reddish-orange
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Pyridium (Phenazopyridine) 100, 200 mg Py-RED-ium
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Converted to Formaldehyde at urine pH less then or equal to 5.5. Nearly all bacteria are sensitive to formaldehyde if critical conc is reached. Use cranberry juice, Vitamin C to lower urine pH because amount of formaldehyde is directly proportional to pH of environment
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Hiprex (Methenamine Hippurate) - 1 gram tabs
Mandelamine (Methenamine Mandelate) - 0.5, 1 gram tabs, 0.5 gram/5mL susp |
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Sulfa interaction - acidic urine increases possibility of precipitating sulfonamides in urine
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Hiprex (Methenamine Hippurate) - 1 gram tabs
Mandelamine (Methenamine Mandelate) - 0.5, 1 gram tabs, 0.5 gram/5mL susp |
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Do not give to patient with ASA allergy or COPD/Asthma because of FD&C Yellow Dye #5 (tartrazine)
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Hiprex (brand only) (Methenamine Hippurate)
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Forms a reactive metabolite - inactivates bacterial ribosomal proteins and damages bacterial DNA
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Macrodantin, Macrobid (Nitrofurantoin) - antimicrobial for UTI infections only, commonly used when resistance to sulfonamides or quinolones occurs
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Renally eliminated - if it accumulates = lung and liver toxicity
Contraindicated in patients with anuria, oliguria, significantly impaired renal function (CrCL<60mL/min) or increases SCr |
Macrodantin, Macrobid (Nitrofurantoin)
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Pulmonary function should be monitored!!
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Macrodantin, Macrobid (Nitrofurantoin)
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Works only in Gut and Kidneys - ihibits DNA gyrase
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Noroxin (Norfloxacin) 400 mg q12h (quinolone antimicrobial) - use UTI, intestinal infections, traveler's diarrhea, NO SYSTEMIC INFECTIONS
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May discolor urine - blue marker lets pts know they are taking medicine
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Methylene Blue in Methenamine combinations (hyoscyamine, methenamine, methylene blue, phenyl salicylate, benzoic acid)
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The main therapeutic agent in Methenamine combinations
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Hyosyamine (aniticholinergic)
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Calculate BMI
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lbs x 703/ht in inches^2
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Some uses for Benadryl
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allergy, sleep, anti-tussive, extrapyramidal symptoms
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Should not use this in any patients with a perforated tympanic membrane
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Cortisporin Otic Suspension (USE Cortisporin Solution)
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What are the ingredients in Tussionex?
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10 mg Hydrocodone with 8 mg chlorpheniramine per tsp
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What is the normal dosing regimen of Tussionex suspension?
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1tsp q12h, 1tsp TID (q8h) for Cancer patients
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Can Tussionex be phoned in to a pharmacy? (It is a C-III)
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Yes
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Why is there an anticholinergic agent in Hycodan cough syrup?
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homatropine is in Hycodan to discourage Abuse (anti-ACh)
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What is an advantage of Claritin over Benadryl?
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Non-sedating, no significant anti-ACh
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How does Clarinex differ from Claritin?
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clarinex is the active metabolite (desloratadine) of Claritin (loratadine)
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What are the ingredients and mg strengths of Claritin D products?
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loratadine/pseudoephedrine 12 hr = 5/120mg, 24hr = 10/240mg
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What are the names of the non-sedating antihistamines?
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Claritin, Alavert, Clarinex, Allegra
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What makes Periactin such a unique antihistamine?
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used for anorgasmia due to SSRIs (street drug)
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Why should a person with Parkinson’s disease not use Phenergan
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Slight DA blockade
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What is the active metabolite of Atarax?
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cetirizine (zyrtec)
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What is the most common use of oral hydroxyzine products?
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anxiety and potentiate narcotics
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What is an advantage of Zyrtec over other Rx antihistamines?
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long duration of action, non-sedating, pregnancy category B
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What is the relationship of Xyzal to Zyrtec?
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active isomer of Zyrtec (levocetirizine)
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When should a person take vitamins when using Xenical?
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take fat soluble vitamins at bedtime or 2 hours apart
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What is a good strategy for starting a person on Xenical?
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take only with meals containing 30% fat, start with one daily with the fattiest meal and then add the second and third for the second and third daily meals on the following weeks to have less problems with fecal incontinence.
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Name some products that contain Chlorhexidine?
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Hibiclens, Hibistat, Peridex
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What is the important counseling for a person who uses Peridex?
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swish after brushing and flossing, do not swallow
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What warning should be given to patients who take antibiotics & oral contraceptives?
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while on antibiotics you should use some other form of contraceptive such as a condom because they tend to make oral contraceptives not as effective
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How does Sudafed work?
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sympathomimetic, alpha adrenergic agonist, vasoconstricts the blood vessels allowing less fluid to get to nose, decreased mucous production, decreased inflammation
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Which receptors in the lower urinary tract are stimulated by the action of Sudafed, resulting in risk of urinary obstruction?
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Alpha 1 adrenergic receptors
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Sudafed is converted to which illegal substance?
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methamphetamine
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Why is there a risk of Sudafed raising blood pressure?
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Increased NE action on alpha-1 receptors in vasculature
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What is contained in Sudafed PE?
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phenylephrine
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What is the mechanism of action of the antibiotic effect of Bactroban?
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binds to bacterial enzyme, inhibits tRNA, bacterial protein & RNA synthesis
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Why is there an intranasal formulation of Bactroban?
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eradication of nasal colonization with MRSA
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How should Lotrisone be applied?
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dot method
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What are the two classes of drug contained in Lotrisone?
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Bethamethasone Dipropionate 0.05% with clotrimazole 1% (Corticosteroid with antifungal)
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What are the three classes of drugs in Midrin?
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Isometheptene Mucate 65 mg sympathomimetic, dichloralphenazone 100mg mild sedative, APAP analgesic
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The patient takes Darvocet-N 100 and OTC Tylenol. Why is there a potential problem when a person also takes Midrin (count the mg in each)?
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Midrin has 325 mg APAP, Darvocet N100 has 650 mg APAP, OTC Tylenol has 500 mg per tablet do not exceed 1000mg in a dose or 4000 mg a day.
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Which product for migraine contains an NSAID plus a triptan?
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treximet 85 mg sumatriptan and 500 mg naproxen sodium
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How does Silvadene work?
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antimicrobial cream, silver damages cell wall
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Why should a person who takes Tessalon be cautioned not to chew the capsules?
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could cause anesthesia of the mouth and choking
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How do the triptan drugs work?
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5HT1b/1d agonists, constrict intracranial blood vessels that become dilated during a migraine, inhibit release of inflammatory neuropeptides from trigeminal pain pathways
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Which triptan is the longest acting one?
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Frova 2.5 mg (FOREVER)
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Which one has the lowest ORAL bioavailability?
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Sumatriptan (Imitrex)
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Which one is available in SC, Nasal, and Oral formulations?
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Sumatriptan (Imitrex)
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Why would a triptan product not be safe for a person with uncontrolled HTN or CHF?
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constrict intracranial blood vessels that become dilated during a migraine
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Name the product that is used for smoking cessation that works by blocks re-uptake of DA and NE in the brain?
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Zyban (Bupropion)
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Describe the mechanism of action of Chantix?
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Nicotinic Acetylcholine receptor agonist at α4 β2 neuronal receptor. It stimulates, but at a significantly lower level than nicotine. Blocks the ability of nicotine to activate the receptor and to stimulate central nervous mesolimbic dopamine system
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What is the most appropriate alternative to Zyban?
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Rx and OTC Nicotine replacement therapy
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Has a Black Box Warning (BBW) of Fatal Respiratory Depression in pediatrics < 2 years old
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Phenergan (Promethazine)
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Hydroxyzine Pamoate
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vistaril (capsules)
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Hydroxyzine HCL
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Atarax (tablets)
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1st rx must be written for a 30 day supply only
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Ionamin (phentermine) and Meridia (sibutramine)
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What are some potential adverse effects to caution patients about while taking oral contraceptive?
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ACHES - Abdominal pain: gallbladder disease, pancreatitis
Chest Pain: Pulmonary embolus, MI Headaches: Stroke, HTN, migraine Eye Problems: Stroke, HTN, vascular problems Severe leg pain: DVT |
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Can have a blue skin discoloration
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Silvadene Cream (SSD) (Silver Sulfadiazine) 1%
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These 2 NSAIDs are used IV to treat patent ductus arteriosus (PDA)
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indomethacin (Indocin) and Ibuprofen (Neoprofen)
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This NSAID is a prodrug, converted to an active metabolite, then to an inactive metabolite in the kidneys
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Clinoril (Sulindac)
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This long-acting NSAID is related to ibuprofen and is in OTC Aleve
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Naproxen Sodium (220 mg Na salt)
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This warning is in the “black box warning” for NSAIDs
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increased risk of serious CV thrombotic events, MI, stroke, which can be fatal. increased risk of serious GI adverse reactions including bleeding, ulceration, and perforation of the stomach or intestines, which can be fatal.
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This is the only COX-2 selective drug
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Celecoxib (Celebrex) 50, 100, 200, 400 mg capsules
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This is the # of days of total therapy allowable for Toradol
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5 day limit
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This NSAID is a ketone, not an acid. It is metabolized to a naproxen-related drug
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Nabumetone (Relafen) 500, 750 mg tablets
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This muscle relaxant is related to an antihistamine and works by depressing the CNS
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Cyclobenzaprine (Flexeril)
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This muscle relaxant is related to meprobamate, a controlled drug
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Carisoprodol (Soma) - 350 mg tablets (250 mg brand only)
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This muscle relaxant inhibits presynaptic motor neurons, reducing spasm
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Tizanidine (Zanaflex) 2, 4 mg tablets 2, 4, 6 mg capsules
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This muscle relaxant is a GABA agonist
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Baclofen (Lioresal) 10, 20 mg tablets
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This is the NSAID in Advil
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Ibuprofen
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This is the food counseling for all patients who take NSAIDs
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Take with food or milk
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This organ is at high risk with the long-term use of APAP
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liver
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This product contains an NSAID plus a prostaglandin, to protect the GI mucosa
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Arthrotec (voltaren plus misoprostol) 50/200, 75/200
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This muscle relaxant is related to an antidepressant, Elavil
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Cyclbenzaprine (Flexeril)
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This is a once-a-day NSAID that is related to Feldene
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Meloxicam (Mobic) 7.5 mg, 15 mg related to Feldene (Piroxicam) 10, 20 mg
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This is the rate-limiting substance in the arachidonic acid cascade
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phospholipase
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This NSAID is composed of two salicylic acid structures fused together
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Salsalate (Disalcid)
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This is what would happen to a person’s GI if he takes Rx Motrin plus OTC Advil
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stomach ulceration, irritation
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This is the mg amount that is maximum for normal adults for both ASA and APAP
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4000 mg
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This is the blood substance that is responsible for the initial clotting plug in an injury
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platelets
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This is what would happen if a hypertensive patient takes high-dose NSAIDs
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Can cause elevated BP in the elderly hypertensive patient
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This class of medications should be avoided by an ASA-allergic patient
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NSAIDs
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This is the mg amount of ASA in Norgesic
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385 mg (Orphenadrine 25 mg, ASA 385 mg, caffeine 30 mg)
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This propionic acid derivative is dosed QD and is available in a 600-mg tablet
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Oxaprozin (Daypro) 600 mg caplets 1200 mg QD MAX=1800mg QD
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When thinking about NSAIDs, this ADR should be the first one to come to mind
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GI effects use PPI when taking long term
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Name the Non-selective Cox inhibitors, carboxylic acids, Proprionic Acid Drugs
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Ibuprofen (advil/motrin)
Naproxen (Aleve, Naprosyn Naprelan, Anaprox) Oxaprozin (Daypro) |
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Name the Salicylic Acid of the Carboxylic Acids in the Non-Selective Cox Inhibitors
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Salsalate (Disalcid)
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Name the Acetic Acids of the Carboxylic Acids in the Non-Selective Cox Inhibitors
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Indomethacin (Indocin), Ketorolac (Toradol), Diclofenac (Voltaren, Cataflam), Sulindac (Clinoril)
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Name the Pyranocarboxylic Acid of the Carboxylic Acids in the Non-Selective Cox Inhibitors
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Etodolac (Lodine)
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Name the Oxicams of the Enolic Acids in the Non-Selective Cox Inhibitors
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Piroxicam (Feldene) and Nabumetone (Relafen)
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What are some longer acting NSAIDs?
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Daypro, Mobic (meloxicam), Feldene (Piroxicam), and long-acting Voltaren (Diclofenac)
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Which one is available in a topically applied product for use on a specific area, such as wrist or knee?
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Diclofenac (Voltaren)
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Threee products with structural similarity and have similar actions
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Soma, Flexeril, Norflex
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Both of these have strong anticholinergic effects as well as CNS depression
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Norflex and Benadryl
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Both of these are CNS depressants with high potential for addiction
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Soma and Meprobamate
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It inhibits the enzyme (Xanthine Oxidase) which is involved in the production of uric acid. Therefore it inhibits the formation of uric acid in patients with hyperuricemia. Not a uricosuric drug
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Allopurinol (Zyloprim)
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When allopurinol is also used with Imuran or Purinethol the dose of ___ must be reduced to __ or __ of the original dose - not the dose of allopurinol
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the immunosuppressive (Imuran or Purinethol) to 1/3 or 1/4 of the original dose
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Interferes with Uric Acid Synthesis
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Allopurinol
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Increases Uric Acid excretion
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Probenecid or sulfinpyrazone
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Inhibits Leukocyte entry into the affected joint
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colchicine
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