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Adipex and Doxepin Tablets

Determining the interaction of Adipex and Doxepin Tablets and the possibility of their joint administration.

Check result:

Adipex <> Doxepin Tablets

Relevance: 23.10.2022 Reviewer: Shkutko P.M., M.D., in

In the database of official manuals used in the service creation an interaction registered by statistical results of studies was found, which can either lead to negative consequences for the patient health or strengthen a mutual positive effect. A doctor should be consulted to address the issue of joint drug administration.

Consumer:

Before taking doxepin, tell your doctor if you also use phentermine. You may need dose adjustments or special tests in order to safely take both medications together. This combination could cause an increase in blood pressure, fever, headache, or fast or irregular heartbeat. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using your medications without first talking to your doctor first.

Professional:

MONITOR: The use of tricyclic antidepressants in combination with amphetamines or sympathomimetic appetite suppressants may produce additive cardiovascular effects, increasing the risk of hypertension, cardiac arrhythmias, tachycardia, and fever. The mechanism involves additive pharmacodynamic effects resulting from increased norepinephrine release by sympathomimetic agents and inhibition of norepinephrine reuptake by tricyclic antidepressants. A pharmacokinetic interaction is also possible between tricyclic antidepressants and amphetamines, since many of these agents are metabolized by CYP450 2D6. Increased plasma levels of one or both drugs may occur during coadministration.

MANAGEMENT: Close monitoring of cardiovascular status is recommended for patients receiving this combination. Patients should be advised to promptly report symptoms such as fever, headache, or fast or irregular heartbeats.

References

Haritos VS, Ghabrial H, Ahokas JT, Ching MS "Role of cytochrome P450 2D6 (CYP2D6) in the stereospecific metabolism of E- and Z-doxepin." Pharmacogenetics 10 (2000): 591-603
Raisfeld IH "Cardiovascular complications of antidepressant therapy: interactions at the adrenergic neuron." Am Heart J 83 (1972): 129-33
Gunne LM, Antonijevic S, Jonsson J "Effect of fenfluramine on steady state plasma levels of amitriptyline." Postgrad Med J 51 Suppl 1 (1975): 117
Nielsen KK, Flinois JP, Beaune P, Brosen K "The biotransformation of clomipramine in vitro, identification of the cytochrome p450s responsible for the separate metabolic pathways." J Pharmacol Exp Ther 277 (1996): 1659-64
Hardman JG, Gilman AG, Limbird LE eds. "Goodman and Gilman's the Pharmacological Basis of Therapeutics. 9th ed." New York, NY: McGraw-Hill (1995):
Kirchheiner J, Muller G, Meineke I, Wernecke KD, Roots I, Brockmoller J "Effects of polymorphisms in CYP2D6, CYP2C9, and CYP2C19 on trimipramine pharmacokinetics." J Clin Psychopharmacol 23 (2003): 459-66
Kirchheiner J, Meineke I, Muller G, Roots I, Brockmoller J "Contributions of CYP2D6, CYP2C9 and CYP2C19 to the biotransformation of E- and Z-doxepin in healthy volunteers." Pharmacogenetics 12 (2002): 571-80
Markowitz JS, Patrick KS "Pharmacokinetic and pharmacodynamic drug interactions in the treatment of attention-deficit hyperactivity disorder." Clin Pharmacokinet 40 (2001): 753-72

Adipex

Generic Name: phentermine

Brand name: Adipex-P, Lomaira, Suprenza

Synonyms: Adipex-P

What is Adipex?

Doxepin Tablets

Generic Name: doxepin

Brand name: Silenor, Sinequan, Sinequan

Synonyms: Doxepin (Sinequan), Doxepin (Systemic)

What is Doxepin Tablets?

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In the course of checking the drug compatibility and interactions, data from the following reference sources was used: Drugs.com, Rxlist.com, Webmd.com, Medscape.com.

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