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Drug Interactions between Talwin and Welltuss EXP

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

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Interactions between your drugs

Major

pentazocine dihydrocodeine

Applies to: Talwin (pentazocine) and Welltuss EXP (dihydrocodeine / guaifenesin / pseudoephedrine)

GENERALLY AVOID: Concomitant use of opioids with other central nervous system (CNS) depressants including mixed agonist-antagonist or partial agonist opioids may result in profound sedation, respiratory depression, coma, and death. The risk of hypotension may also be increased. On the other hand, mixed agonist-antagonist or partial agonist opioids can reduce the pharmacologic effects of other opioid agonists. Reduced efficacy or withdrawal symptoms may occur in patients maintained on their opioid regimen following the addition of a mixed agonist-antagonist or partial agonist opioid.

MANAGEMENT: The use of opioids in conjunction with other CNS depressants including mixed agonist-antagonist or partial agonist opioids should generally be avoided unless alternative treatment options are inadequate. If coadministration is necessary (e.g., when initiating a switch from one opioid to the other), the dosage and duration of each drug should be limited to the minimum required to achieve desired clinical effect, and patients should be closely monitored for signs and symptoms of CNS and respiratory depression. Additional caution is advisable when a mixed agonist-antagonist or partial agonist opioid is added to an existing opioid regimen, as there may be an increased risk of withdrawal symptoms (e.g., restlessness, insomnia, sweating, lacrimation, or rhinorrhea) following initiation of the mixed agonist-antagonist or partial agonist opioid. A dosage adjustment for one or both drugs may be required.

References

  1. Moldenhauer CC, Roach GW, Finlayson DC, et al. "Nalbuphine antagonism of ventilatory depression following high-dose fentanyl anesthesia." Anesthesiology 62 (1985): 647-50
  2. Gilman AG, eds., Nies AS, Rall TW, Taylor P "Goodman and Gilman's the Pharmacological Basis of Therapeutics." New York, NY: Pergamon Press Inc. (1990):
  3. Strain EC, Preston KL, Liebson IA, Bigelow GE "Precipitated withdrawal by pentazocine in methadone-maintained volunteers." J Pharmacol Exp Ther 267 (1993): 624-34
  4. "Product Information. Nubain (nalbuphine)." Endo Laboratories LLC PROD (2001):
  5. "Product Information. Buprenex (buprenorphine)." Reckitt and Colman Pharmaceuticals Inc PROD (2001):
  6. "Product Information. Talwin NX (pentazocine)." Sanofi Winthrop Pharmaceuticals PROD (2001):
  7. "Product Information. Stadol (butorphanol)." Allscrips Pharmaceutical Company PROD (2001):
  8. "Product Information. Dalgan (dezocine)." Astra-Zeneca Pharmaceuticals PROD (2001):
  9. "Product Information. Suboxone (buprenorphine-naloxone)." Reckitt and Colman Pharmaceuticals Inc (2002):
  10. "Product Information. Subutex (buprenorphine)." Reckitt and Colman Pharmaceuticals Inc (2002):
  11. "Product Information. Butrans (buprenorphine)." Purdue Pharma LP (2010):
View all 11 references

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Drug and food interactions

Moderate

pentazocine food

Applies to: Talwin (pentazocine)

MONITOR: Smoking tobacco may decrease the plasma concentrations and effects of pentazocine by enhancing its metabolic clearance.

MANAGEMENT: The possibility of reduced therapeutic effects of pentazocine should be considered in smokers.

References

  1. Miller LG "Recent developments in the study of the effects of cigarette smoking on clinical pharmacokinetics and clinical pharmacodynamics." Clin Pharmacokinet 17 (1989): 90-108
  2. D'Arcy PF "Tobacco smoking and drugs: a clinically important interaction?" Drug Intell Clin Pharm 18 (1984): 302-7
  3. "Product Information. Talacen (acetaminophen-pentazocine)." Sanofi-Synthelabo Inc (2006):

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Moderate

pentazocine food

Applies to: Talwin (pentazocine)

GENERALLY AVOID: Ethanol may potentiate the central nervous system (CNS) depressant effects of opioid analgesics. Concomitant use may result in additive CNS depression and impairment of judgment, thinking, and psychomotor skills. In more severe cases, hypotension, respiratory depression, profound sedation, coma, or even death may occur.

MANAGEMENT: Concomitant use of opioid analgesics with ethanol should be avoided.

References

  1. Linnoila M, Hakkinen S "Effects of diazepam and codeine, alone and in combination with alcohol, on simulated driving." Clin Pharmacol Ther 15 (1974): 368-73
  2. Sturner WQ, Garriott JC "Deaths involving propoxyphene: a study of 41 cases over a two-year period." JAMA 223 (1973): 1125-30
  3. Girre C, Hirschhorn M, Bertaux L, et al. "Enhancement of propoxyphene bioavailability by ethanol: relation to psychomotor and cognitive function in healthy volunteers." Eur J Clin Pharmacol 41 (1991): 147-52
  4. Levine B, Saady J, Fierro M, Valentour J "A hydromorphone and ethanol fatality." J Forensic Sci 29 (1984): 655-9
  5. Sellers EM, Hamilton CA, Kaplan HL, Degani NC, Foltz RL "Pharmacokinetic interaction of propoxyphene with ethanol." Br J Clin Pharmacol 19 (1985): 398-401
  6. Carson DJ "Fatal dextropropoxyphene poisoning in Northern Ireland. Review of 30 cases." Lancet 1 (1977): 894-7
  7. Rosser WW "The interaction of propoxyphene with other drugs." Can Med Assoc J 122 (1980): 149-50
  8. Edwards C, Gard PR, Handley SL, Hunter M, Whittington RM "Distalgesic and ethanol-impaired function." Lancet 2 (1982): 384
  9. Kiplinger GF, Sokol G, Rodda BE "Effect of combined alcohol and propoxyphene on human performance." Arch Int Pharmacodyn Ther 212 (1974): 175-80
View all 9 references

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Moderate

pseudoephedrine food

Applies to: Welltuss EXP (dihydrocodeine / guaifenesin / pseudoephedrine)

MONITOR: Coadministration of two or more sympathomimetic agents may increase the risk of adverse effects such as nervousness, irritability, and increased heart rate. Central nervous system (CNS) stimulants, particularly amphetamines, can potentiate the adrenergic response to vasopressors and other sympathomimetic agents. Additive increases in blood pressure and heart rate may occur due to enhanced peripheral sympathetic activity.

MANAGEMENT: Caution is advised if two or more sympathomimetic agents are coadministered. Pulse and blood pressure should be closely monitored.

References

  1. Rosenblatt JE, Lake CR, van Kammen DP, Ziegler MG, Bunney WE Jr "Interactions of amphetamine, pimozide, and lithium on plasma norepineophrine and dopamine-beta-hydroxylase in schizophrenic patients." Psychiatry Res 1 (1979): 45-52
  2. Cavanaugh JH, Griffith JD, Oates JA "Effect of amphetamine on the pressor response to tyramine: formation of p-hydroxynorephedrine from amphetamine in man." Clin Pharmacol Ther 11 (1970): 656
  3. "Product Information. Adderall (amphetamine-dextroamphetamine)." Shire Richwood Pharmaceutical Company Inc PROD (2001):
  4. "Product Information. Tenuate (diethylpropion)." Aventis Pharmaceuticals PROD (2001):
  5. "Product Information. Sanorex (mazindol)." Novartis Pharmaceuticals PROD (2001):
  6. "Product Information. Focalin (dexmethylphenidate)." Mikart Inc (2001):
  7. "Product Information. Strattera (atomoxetine)." Lilly, Eli and Company (2002):
View all 7 references

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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

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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.

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