Skip to main content

Drug Interactions between Fiortal and levamlodipine

This report displays the potential drug interactions for the following 2 drugs:

Edit list (add/remove drugs)

Interactions between your drugs

Moderate

aspirin levamlodipine

Applies to: Fiortal (aspirin / butalbital / caffeine) and levamlodipine

MONITOR: Limited data indicate that some cyclooxygenase inhibitors may attenuate the antihypertensive effects of some calcium channel blockers. The mechanism appears to be related to an alteration of vascular tone, which is dependent on prostacyclins and other vasodilatory prostanoids. When a nonsteroidal anti-inflammatory drug (NSAID) is added to the regimen of a patient who is already taking a calcium channel blocker, increased blood pressure may result. Also, the clinician should be aware that the risk of hypotension is increased when NSAIDs are withdrawn from the regimen.

MANAGEMENT: Monitoring for altered blood pressure control is recommended.

References

  1. Ring ME, Corrigan JJ, Fenster PE (1986) "Effects of oral diltiazem on platelet function: alone and in combination with "low dose" aspirin." Thromb Res, 44, p. 391-400
  2. Altman R, Scazziota A, Dujovne C (1988) "Diltiazem potentiates the inhibitory effect of aspirin on platelet aggregation." Clin Pharmacol Ther, 44, p. 320-5
  3. Cremer KF, Pieper JA, Joyal M, Mehta J (1984) "Effects of diltiazem, dipyridamole, and their combination on hemostasis." Clin Pharmacol Ther, 36, p. 641-4
  4. Minuz P, Pancera P, Ribul M, et al. (1995) "Amlodipine and haemodynamic effects of cyclo-oxygenase inhibition." Br J Clin Pharmacol, 39, p. 45-50
  5. Houston MC, Weir M, Gray J, et al. (1995) "The effects of nonsteroidal anti-inflammatory drugs on blood pressures of patients with hypertension controlled by verapamil." Arch Intern Med, 155, p. 1049-54
  6. Deleeuw PW (1996) "Nonsteroidal anti-inflammatory drugs and hypertension: the risks in perspective." Drugs, 51, p. 179-87
  7. "Product Information. DurAct (bromfenac)." Wyeth-Ayerst Laboratories
  8. (2001) "Product Information. Arthrotec (diclofenac-misoprostol)." Searle
  9. Zanchetti A, Hansson L, Leonetti G, et al. (2002) "Low-dose aspirin does not interfere with the blood pressure-lowering effects of antihypertensive therapy." J Hypertens, 20, p. 1015-1022
View all 9 references

Switch to consumer interaction data

Moderate

butalbital levamlodipine

Applies to: Fiortal (aspirin / butalbital / caffeine) and levamlodipine

MONITOR: Barbiturates may increase the hepatic metabolism of some dihydropyridine calcium channel blockers by inducing CYP450 3A4 hepatic metabolism. The serum concentrations and effects of these calcium channel blockers may be significantly decreased.

MANAGEMENT: If concurrent administration cannot be avoided, the patient should be closely monitored for changes in pharmacologic effects whenever a barbiturate is initiated, discontinued or its dosage adjusted. An increased dosage of the calcium channel blocker may be necessary.

References

  1. Hamann SR, Blouin RA, Chang SL, et al. (1984) "Effects of hemodynamic changes on the elimination kinetics of verapamil and nifedipine." J Pharmacol Exp Ther, 231, p. 301-5
  2. Schellens JH, Van Der Wart JH, Brugman M, Breimer D (1989) "Influence of enzyme induction and inhibition on the oxidation of nifedipine, sparteine, mephenytoin and antipyrine in humans as assessed by a "cocktail" study design." J Pharmacol Exp Ther, 249, p. 638-45
  3. Koleva MR, Stoychev TS (1995) "Effect of nifedipine, verapamil and diltiazem on the enzyme-inducing activity of phenobarbital and beta-naphthoflavone." Gen Pharmacol, 26, p. 225-8

Switch to consumer interaction data

Minor

aspirin caffeine

Applies to: Fiortal (aspirin / butalbital / caffeine) and Fiortal (aspirin / butalbital / caffeine)

One study has reported that coadministration of caffeine and aspirin lead to a 25% increase in the rate of appearance and 17% increase in maximum concentration of salicylate in the plasma. A significantly higher area under the plasma concentration time curve of salicylate was also reported when both drugs were administered together. The exact mechanism of this interaction has not been specified. Physicians and patients should be aware that coadministration of aspirin and caffeine may lead to higher salicylate levels faster.

References

  1. Yoovathaworn KC, Sriwatanakul K, Thithapandha A (1986) "Influence of caffeine on aspirin pharmacokinetics." Eur J Drug Metab Pharmacokinet, 11, p. 71-6

Switch to consumer interaction data

Drug and food interactions

Major

butalbital food

Applies to: Fiortal (aspirin / butalbital / caffeine)

GENERALLY AVOID: Concurrent acute use of barbiturates and ethanol may result in additive CNS effects, including impaired coordination, sedation, and death. Tolerance of these agents may occur with chronic use. The mechanism is related to inhibition of microsomal enzymes acutely and induction of hepatic microsomal enzymes chronically.

MANAGEMENT: The combination of ethanol and barbiturates should be avoided.

References

  1. Gupta RC, Kofoed J (1966) "Toxological statistics for barbiturates, other sedatives, and tranquilizers in Ontario: a 10-year survey." Can Med Assoc J, 94, p. 863-5
  2. Misra PS, Lefevre A, Ishii H, Rubin E, Lieber CS (1971) "Increase of ethanol, meprobamate and pentobarbital metabolism after chronic ethanol administration in man and in rats." Am J Med, 51, p. 346-51
  3. Saario I, Linnoila M (1976) "Effect of subacute treatment with hypnotics, alone or in combination with alcohol, on psychomotor skills related to driving." Acta Pharmacol Toxicol (Copenh), 38, p. 382-92
  4. Stead AH, Moffat AC (1983) "Quantification of the interaction between barbiturates and alcohol and interpretation of fatal blood concentrations." Hum Toxicol, 2, p. 5-14
  5. Seixas FA (1979) "Drug/alcohol interactions: avert potential dangers." Geriatrics, 34, p. 89-102
View all 5 references

Switch to consumer interaction data

Moderate

aspirin food

Applies to: Fiortal (aspirin / butalbital / caffeine)

GENERALLY AVOID: The concurrent use of aspirin or nonsteroidal anti-inflammatory drugs (NSAIDs) and ethanol may lead to gastrointestinal (GI) blood loss. The mechanism may be due to a combined local effect as well as inhibition of prostaglandins leading to decreased integrity of the GI lining.

MANAGEMENT: Patients should be counseled on this potential interaction and advised to refrain from alcohol consumption while taking aspirin or NSAIDs.

References

  1. (2002) "Product Information. Motrin (ibuprofen)." Pharmacia and Upjohn

Switch to consumer interaction data

Minor

caffeine food

Applies to: Fiortal (aspirin / butalbital / caffeine)

The effect of grapefruit juice on the pharmacologic activity of caffeine is controversial. One report suggests that grapefruit juice increases the effect of caffeine. The proposed mechanism is inhibition of cytochrome P-450 metabolism of caffeine. However, a well-conducted pharmacokinetic/pharmacodynamic study did not demonstrate this effect. The clinical significance of this potential interaction is unknown.

References

  1. (1995) "Grapefruit juice interactions with drugs." Med Lett Drugs Ther, 37, p. 73-4
  2. Maish WA, Hampton EM, Whitsett TL, Shepard JD, Lovallo WR (1996) "Influence of grapefruit juice on caffeine pharmacokinetics and pharmacodynamics." Pharmacotherapy, 16, p. 1046-52

Switch to consumer interaction data

Minor

aspirin food

Applies to: Fiortal (aspirin / butalbital / caffeine)

One study has reported that coadministration of caffeine and aspirin lead to a 25% increase in the rate of appearance and 17% increase in maximum concentration of salicylate in the plasma. A significantly higher area under the plasma concentration time curve of salicylate was also reported when both drugs were administered together. The exact mechanism of this interaction has not been specified. Physicians and patients should be aware that coadministration of aspirin and caffeine may lead to higher salicylate levels faster.

References

  1. Yoovathaworn KC, Sriwatanakul K, Thithapandha A (1986) "Influence of caffeine on aspirin pharmacokinetics." Eur J Drug Metab Pharmacokinet, 11, p. 71-6

Switch to consumer interaction data

Therapeutic duplication warnings

No warnings were found for your selected drugs.

Therapeutic duplication warnings are only returned when drugs within the same group exceed the recommended therapeutic duplication maximum.

See also

Report options

Loading...
QR code containing a link to this page

Drug Interaction Classification

These classifications are only a guideline. The relevance of a particular drug interaction to a specific individual is difficult to determine. Always consult your healthcare provider before starting or stopping any medication.
Major Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.
Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
Minor Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan.
Unknown No interaction information available.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Medical Disclaimer