Drugs Flashcards
Why would Pyroxidine be prescribed?
Prevent side effect of Isoniadzid (peripheral neuropathy)- TB mediation
What are the side effects of Phenytoin?
Gingival hyperplasia, peripheral neuropathy, lymphadenopathy
How does Memantine work?
NMDA antagonist - second line treatment for alzheimers
What enzyme needs to be tested prior to started Aziothiarpine? and what is Azathioprine used for?
TPMT levels prior to staring treatment. Azathioprine is used to induce remission in Crohns
Side effects of calcium channel blockers? eg Amlodipine
Ankle swelling
What is the reversal agent for Dabigitran (DOAC)?
idarucizumab
What is the reversal agent for Heparin?
protamine sulfate
What are some examples of anti musclarinics used in urge incontinence?
First line: Oxybutanin. Second line: tolterodine
What monitoring is required with use of Amiodarone?
LFTS/ TFTS/ U+Es 6 monthly. ECG every 12 months
What type of antibiotic is Clarithryomycin and what is a side effect?
Macrolide. Side effect is VT (torsades de points)
What morphine drugs can be used in patients with CKD 4 (palliative care)?
Alfentanil, oxycodone, buprenorphine, fentanyl
How does Gliclazide work?
ATP dependent K channels on pancreatic beta cells
What is a side effect of nicorandil?
Ulceration including anal ulceration
What monitoring is required for Hydroxychloroquine?
Ophthalmology referral prior to commencing treatment. Need annual visual check
What is a side effect of Co-amoxiclav?
Can cause cholestasis- elevated bilirubin/ itching
What are the side effects of Cisplatin?
Hypomagnesium, ototoxicity and peripheral neuropathy
What are the side effects of Methotrexate?
Bone marrow suppression, liver fibrosis, lung fibrosis.
What are the side effects of Doxorubcin?
Cardiomyopathy
What would a side effect of long term oral trimethoprim for acne be?
Depress haemopoetisis
What type of drug is Losartan ?
ARB
What drugs can cause hypercalcaemia?
Thiazide drugs eg Bendroflumethazide or calcium containing antiacids
What type of drug is Carvedilol?
B blocker. Used post MI
What type of drug is Gliclazide and what are some of the side effects?
Sulphonylurea.
SI include weight gain and hypoglycaemia
What type of drug is Bumetanide? and what is the side effect?
Loop Diuretic
Ototoxicity
What are SGLT1 inhibitors associated with/ side effects?
Necrotising fascititis of the perineum
Normoglycaemic ketoacidosis
UTIs
What monitoring does Amiodarone need?
TFT, LFT, U&E, CXR prior to treatment
TFT, LFT every 6 months
What monitoring does Sodium Valporate need?
LFT, FBC before treatment
LFT ‘periodically’ during first 6 months
What monitoring does Glitazones need?
LFT before treatment
LFT ‘regularly’ during treatment
What is the antibiotic for cellulitis if allergic to penicillin?
Clarithromycin
What medications can cause gingival hyperplasia?
phenytoin, ciclosporin, calcium channel blockers
What condition can gingival hyperplasia be seen in?
AML
Clozapine is an example of which type of drugs?
Atypical antipsychotic
What is the management for acute prostatitis?
Ciprofloxacin
What are the monitoring requirements for statins?
LFTs at baseline, 3 months and 12 months
How does varenicline work?
Parial nicotinic agonist
What is an example of an SGLT2 drugs for diabetes?
Dapagliflozin
What are side effects of calcium channel blockers?
Headaches/ flushing/ ankle oedema
What are some examples of calcium channel blockers?
Amlodipine
What is a side effect of Doxorubacin?
Cardiomyopathy / Cardiotoxicity
Erythromycin is contraindicated in which 3 drugs?
amiodarone, warfarin and simvastatin
Side effect of long term PPI (Omeprazole)
Osteoporosis and fractures increase fracture risk, hyponatraemia
What drug can cause duptenyrns contracture?
Phenytoin
What is an example of aminoglycoside?
Gentamicin, neomycin
Which diabetic medication is contraindication in heart failure?
Pioglitazone- can cause fluid retention and therefore bad in HF
What antibiotic for a dental abcess?
Amoxicillin
What are the side effects of Finasteride?
Gynaecomastia/ decreased libido/ ejaculation disorders
What is the dose of rectal diazepam for seizures (in community)
10mg rectal diazepam
Side effect of Pioglitazone?
Fluid retention
Which drugs can precipitate lithium toxicity?
NSAIDs, Diuretics, ACE/ARB
Side effects of Amiodarone?
Pulmonary fibrosis, corneal deposits, photosensitivity reactions, derangement in liver function tests and TFS
Treatment of Campylobacter enteritis
Clarithryomycin
What is an example of a selective serotonin reuptake inhibitors?
SSRI = citalopram/ fluoxetine
What drugs are contraindicated with an SSRI?
Warfarin, Aspirin, NSAIDs, Triptans, MAO inhibitors.
What drug can cause a blue tinge to vision?
Sildenafil
What drug interacts with levothyroxine?
IRON!
What drugs can cause urinary retention?
Amitriptylline, anticholingerics (oxybutanin), NSAIDs, opioids
Donepezil
-What type of drug
- Indication
- Side effect/ CI?
acetylcholinesterase inhibitor
Indicated for Alzheimers
Side effect: Insomnia/ Bradycardia
Agranulocytosis is a side effect of which drug?
Carbamazepine
Side effect of Varenicline?
Nictonic receptor parital agonist
Side effect) nausea/ insomnia
What blood test needs to be done prior to starting TB treatment?
LFTs
Side effect of Benzodizepine drugs?
Anterograde amnesia
What type of drug is indapamide?
Thiazide like diuretic
What is the most common drug caused of Gynaecomastia?
Spironlactone
What is an example of a drug that can cause drug induced thrombocytopenia?
Quinine (others include NSAIDs, diuretics)
When should Metformin be held?
Recent MI, AKI, Sepsis (risk of lactic acidosis)
Campylobacter diarrhoea is treated with?
Clarithromycin
Clarithromycin interacts with which common drug?
Statins! increased risk of rhabdo
What drugs can precipitate digoxin toxicity?
Anything that causes hypokaemia eg loop diuretics, quinine, amiodarone, vermapril, diltazam, ciclosporin
What is Digoxin used for?
Rate control in AF
Important side effect of hydroxychloroquine?
EYE TOXICITY
Aspirin overdose is treated with?
Urinary alkalisation
Haemodialysis if severe.
Beta blocker overdose treated with?
Atropine first line
If doesn’t respond then Glucagon
Side effect of ethabutamol
Optic neuritis- need to check visual acuity.
What type of drug is empagliflozin ?
Flozins are SGLT2 inhibitors
What is a side effect of empagliflozin ?
Increased frequency of UTIs due to renal excretion of glucose.
What drugs cause erythema nodosum?
penicillins, sulfonamides (such as sulfasalazine), and the combined oral contraceptive pill.
What drugs raise prolactin?
metoclopramide, domperidone, prochlorperazine
How does paroxetine work?
SSRI
What drugs can cause gynaecomastia?
Sprinolactone, goserelin, digoxin, finasteride.
Side effect of NSAIDS?
Cardiovascular events
What type of drug is Amitrptylline and what is the side effect?
Tricyclic Antidepressant
Side effect- Antimusclarinic effects eg dry mouth and blurred vision
Side effect of Cetrizine?
Anticholingeric effects if combined with other antimusclarinics
Side effects of Montelukast ?
Common- diarrhoea/ GI/ fever
Can also cause neuropsychiatric problems and sleep disorders.
What type of drug is Xylometazoline ?
Nasal decongestant. avoid in things like angle closure glaucoma
What antidepressant has a long half life and therefore increased risk of serotonin syndrome?
Fluoxetine ( long half life- can cause interactions for up to 5 weeks after stopping)
What type of drugs is Moclobemide?
MAO inhibitor for depression
What are some examples of Macrolide antibiotics? and what drug would need to be held when prescribing them?
‘Mycins’ Erthyromycin, clarithryomycin.
Hold statins!
LABA (long acting B agonist) for asthma must be prescribed alongside what?
LABA+ steroid inhaler. If LABA used without steroid can increase risk of exacerbations
How do propanolol and bisoprolol act on b receptors?
Bisoprolol is cardioselective (less problematic in astmatics) and propanolol works on all the beta receptors.
Which drugs interact with amiodarone?
Statin- simvastatin.
Amiodarone- side effects?
Slate grey appearance/ HYPO or HYPER thyroid!
Hypotension
Ocular involvement
“Amiodarone is a bitch”
Blue man
Intersitital lung disease
Thyroid (hypo/hyper)
Corneal
Hypotension
Side effects of Methylphenidate? (and use of this drug)
ADHD drug
Side effects- decreased appetite, dropping height centiles.
What drug increases risk of tendon injuries?
Ciprofloxacin!
Side effect of Clarithryomycin?
CVS events.
Side effect of Doxycycline?
Ototoxic/ Oesphagitis
Side effect of Pen V
Decreased platelet count - easy bruising
What is eflornithine used for?
To prevent excess hair growth on the face of women with PCOS
What is second line in BB overdose?
Glucagon (second line after atropine)
What are some examples of SSRI?
Fluoxetine/ Sertraline/ Citalopram
What SSRI for under 18’s?
Fluxoxetine
Side effect of Nitrofurotin?
Jaundice
What drugs cause the side effect of gynaecomastia? (5)
- Spirinolactone
- Cimetidine
- Zoladex
- Finasteride
- Calcium channel blockers
What drugs can cause tardive dyskinesia? (2)
- Antipsychotics
- Metoclopramide
What drug can cause rhabdomyolysis?
Statins
What drugs can cause erectile dysfunction?
Antihypertensives, Antidepressants, nicotine
What drugs can cause Jaundice?
Nitrofurotonin, Erythromycin, Isonidazid, Methydopa, Indomethocin and Salicytes
What are the side effects of Leflunomide?
Hypertension/ GI upset/ Hepatitis
What are the side effects of Sulphalazine?
Low sperm count/ mouth ulcers/ depression hepatitis
Side effect of Ethambutol
OPTIC NEURITIS!
What are the side effects of these cytotoxic agents -(toxicity bear)
Doxorubicin
Bleomycin
Cisplatin
Methotrexate
Vincristine/ Vinblatine
Cyclophosphamide
Doxorubicin- cardiotoxicity
Bleomycin- Lungs
Cisplatin- Ears and kidneys
Methotrexate- liver
Vincristine - Peripheral neuropathy
Cyclophosmaide- haemorraghic cystitis
Side effect of Acarbose (diabetic med)
Farting!
Side effect of Propanolol?
Cold fingers/ toes, tiredness, sleep disturbance
Side effects of Thiazide diuretics eg bendoflumethazide?
Impaired glucose tolerance
Hypokaemia
Hyponatraemia
Gout
Dehydration
Postural hypotension
What are some of the side effects of long term Nitrofuratoin?
Pulmonary fibrosis/ and its renally excreted so not for patients with eGFR less 45
What can omeprazole do to electrolytes?
Hypomagnesium/ Hyponatraemia
How is Dabigitran/ Rivaroxaban/ Apixiban excreted?
Dabigitran- Renal
Rivaroxban- Liver
Apixiban- fecal
What 2 SSRIs are most likely to cause discontinuation syndrome?
Paroxetine and Venlafaxine
What are the side effects of SSRI?
Increased thoughts of suicide
Hyponatraemia
GI bleeding
GI upset
Citalopram- INCREASED QT interval
What drugs cannot be co-prescribed with SSRIs? (5)
NSAIDS
Warfarin/ Heparin
Aspirin
Triptans
Clozapine toxicity presents how?
Hypersalivation/ drowsiness/ seizures and confusion (Remember clozapine= agranulocytosis)
What is a side effect of Carbamazepine?
Leucopaenia, thrombocytopenia and agranulocytosis
Common side effects of melatonin?
Odd dreams, arthralgia, increased risk of infection, pain
What is a normal QT interval?
430 in males
450 in females
Side effect of Mefloquine (malaria prophylaxis) and what patients is it contraindicated in?
Neuropsychiatric disorders.
Contraindicated in epilepsy/ GAD/ psychiatric disorders
What drugs can cause pancreatitis?
Thiazides/ Tetracyclines and Aziothioprine
azathioprine, mesalazine, didanosine, bendroflumethiazide, furosemide, pentamidine, steroids, sodium valproate
Mechanism of action Bromocriptine?
Dopamine Agonist
Mechanism of action of Proclorperazine ?
Dopamine R Antagonist
Side effect- muscle spasms, movement disorders.
How do Cabergoline (Dostinex) and Bromocriptine work?
Side effects?
Dopamine Receptor Agonist.
Side effect- rare= pulmonary fibrosis
Postural hypotension/ Hallunicaitons
What needs to be done prior to treatment with Cabergoline or Bromocriptine?
- ESR,
2.creatinine
3.chest x-ray should be obtained prior to treatment
How does Procyclidine work? and what are its uses?
Anticholinergic
Used for Parkinsonism/ extrapyramidal side effects
What are each of these drugs?
- Clozapine
- Chlorpromazine hydrochloride
- Carbamazepine
Clozapine- Atypical Antipsychotic. (Aganulocytosis)
Chlorpromazine hydrochloride - Schizophrenia, N+V in pal care.
Carbamazepine- Antieplieptic
What condition do ACE inhibitors need to be prescribed carefully?
Renal artery stenosis. Avoid ACE inhibitors if bilateral renal artery stenosis.
Octreotide- what is it used for and what is a side effect?
Used for carcinoid tumours
Side effect- gall stones!
What SSRIs to avoid with Tamoxifen?
Avoid fluoxetine and paroxetine
Side effect of Thiazide like diuretics?
Hyponatraemia
Hypokaemia
Side effects of these Rheumatoid Arthritis drugs:
Sulphasalazine
Leflunomide
Hydroxychloroquine
Gold
‘MABs’
Gold
Penicillamine
NSAIDs
Sulphasalazine- oligospermia, rashes.
Leflunomide - HTN, liver disease, fibrosis
Hydroxychloroquine- eye checks!
Gold- proteinuria
‘MABs’- Reactivation of TB
Penicillamine- proteinuria/ exacerbation of myasthenia graves
NSAIDs - bronchospasm/ peptic ulceration
When does the BNF suggest gradual reduction in steroids?
- If 40mg Prednisone for more than a week
- More than 3 weeks of treatment
- Repeated courses of steroids
What are the drug causes of galactorrhea? (Raised prolactin =3)
Metoclopramide
Phenothiazines eg: Levomepromazine
Haloperidol
What is a side effect of Atenolol? (beta blockers in general)
Raynauds
Hypoglycaemia in diabetics
Exacerbate psoriasis
Withdrawing a patient from Benzodiazepines- what is the schedule?
Switch to an equivalent dose of DIAZEPAM
Reduce in steps about 2-3mg each 2-3 weeks
What are the side effects of Flozins sglt2 inhibitors?
Euglycaemic ketosis
Increased risk of foot amputation
Urine infections due to glycosuria
Side effect of Pioglitazone (Thiazolidinediones)
- Fluid retention (CI in heart failure)
- Weight gain
- Liver impairment
- BLADDER CA.
What are the 2 drugs used for opioid dependence?
How do you switch from one to another?
Buprenorphine and Methadone
Stop methadone and restart Buprenorphine when withdrawal symptoms start.
Doxycycline (tetracycline) contraindicated in which patient groups? (3)
pregnancy - tooth abnormalities
Myasthenia Gravis - increase muscle weakness
Lupus - exacerbate
What drugs can cause dyspepsia?
NSAIDS
Steroids
SSRIs
Digoxin
Viagra
What antiemetic for gastric stasis/ functional bowel obstruction?
Metoclopramide
What antiemetic for metabolic causes of N+V?
Haloperidol eg hypercalcaemia or renal failure
Cyclizine is used for which types of N+V?
Motion sickness
Raised ICP
Mechanical bowel obstruction
What eGFR would you avoid Apixiban?
eGFR 15 or below avoid apixiban
What to remember about Amlodipine and simvastatin?
Max dose of Simvastatin is 20mg when coprescribed with Amlodipine
3 drug of gingival hyperplasia
Phenytoin
CCB (Amlodipine/ Nifedipine)
Ciclosporin
Side effects of Digoxin?
YELLOW VISION (Xanthopsia)
Arrhythmias
Side effect of Adenosine ?
Flushing, Bronchospasm, chest discomfort
What antihypertensive is contraindicated in Gout?
Thiazide like diuretics
What are the main ototoxic drugs?
Aminoglycosdies (Gentamicin)
Loop diuretics
Salicylates
Palliative care- what drug is first line in Agitation and confusion?
Haloperidol
Lithium and Digoxin Toxicity
- Precipating factors
- Classic Presentation
- Treatment
Lithium
Precipitating: ACE/ ARB. NSAIDS. Thiazide like diuretics
Presentation: Hyperreflexia/ Coarse tremor
Mx) Fluid resus. Haemodialysis if severe.
Digoxin
Precipitating: HYPOkaleamia
Presentation: Arrythmias/ Yellow green vision
Mx) Digibind ( digoxin specific antibody fragments)
What may antifreeze be referred to?
Ethylene Glycol
Antidote to antifreeze/ ethylene glycol?
Fomepizole
(traditionally ethanol used)
Haemodialysis
Poisioning from methanol would be from ingestion of what?
Windscreen wash
Liquids used in distilling
Antidotes to the following (common ones)
Beta blockers
Paracetamol
Salyciliates
Benzodiazepines
TCAs
Methanol
Organophosphate insecticide
Beta blockers : Atropine/ Glucagon if resistant
Paracetamol: Charcoal if 1hr/ NAC/ Liver transplant
Salyciliates: 1. Urinary alkinsation 2. Haemodialysis
Benzodiazepines : Flumezanil
TCAs: IV Bicarbonate/ Dialysis
Methanol: Fomepeziole (same as antifreeze)
Organophosphate insecticide: Atropine (same as BB)
What are the antidotes to the following:
Iron
Lead
Carbon monoxide
Cyanide
Iron - Desferrioxamine
Lead - Dimercaprol
Carbon monoxide - 100% O2
Cyanide- Hydroxycobalamin
How does COCAINE use present?
Most things go up
Hypertension/ Hyperreflexia/ Hypertonia/ Tachycardia
Psychotic episodes/ Anxiety
Treatment is with Benzodiazepines eg: coronary artery spasm
How does ecstasy ( MDMA) use present and management in toxicity?
HYPONATRAEMIA
Anxiety/ agitation/ hypertension/ Rhabdomyaysis/ Tachycardia
Mx) Dantrone if severe - if not supportive.
Barbituates- overdose would present how and management?
eg Thiopentone is a medically used barbiturate.
Present with Reduced GCS/ Reduced respiratory drive
MX) Activated charcoal/ haemodialysis
How would cannabis use present?
Can present with psychotic symptoms
Cyclical vomiting syndrome ( relieved with hot shower)
Gynaecomastia
How would GHB use present?
(opposite to amphetamines)
Respiratory depression
What is the antidote to Benzodiazepine overdose?
Flumenazil
What is the antidote to TCAs overdose?
IV Bicarbonate/ Dialysis
What is the antidote for organophosphate poisoning?
Atropine
What is the antidote for Digoxin/ Lead/ Cyanide?
Digoxin: Digibind
Lead: Dimercaprol
Cyanide: Hydroxycobalamin
What analgesia for shingles related pain? Post herpetic pain?
Amitriptylline
What 2 drugs can increase saliva production?
Clozapine/ Neostigmine
What are some drug causes of erectile dysfunction?
Finasteride
BB eg Atenolol
Thiazide diuretics eg indapamide
TCA antidepressants eg Amitriptylline
Side effect of Beta Blockers?
Erectile dysfunction
Drugs that cause erectile dysfunction?
BB
Spirnolactone
Thiazide diuretic
Finasteride
Digoxin
What is an example of a Tetracycline and what are the side effect?
Tetracyclines eg Minocycline
Caution– can exacerbate lupus!!
Can also cause facial pigmentation
What are some examples of phenothiazines?
chlorpromazine hydrochloride, prochlorperazine,
Apart from orange secretions what are the other side effects of Rifamicin?
N+V
Thrombocytopenia
Diarrhoea
Leukpenia
Side effects of Orlistat and when should it be used?
BMI over 28 with risk factors
OR BMI over 30
Side effects: flactulance/ fecal incontinence
Pancreatic lipase inhibitor
Tamoxifen - uses (2)
Increases risk of?
Cannot use in which patient groups?
Side effects
Tamoxifen - used for ER + breast ca in pre menopausal women
- treatment of gynaecomastia
Increases risk of VTE/ Endometrial ca.
Cannot use in breastfeeding or pregnancy
Side effects: N+V/ HOT FLUSHES
Is Erythromycin safe in pregnancy?
Yes
Side effects of Stains
Myositis
Altered LFTs
GI side effects (rarely pancreatitis)
Rarely ILD
What are the side effects of Carbamazapine?
Ataxia, Diplopia, Dizzyness