Doxepin HCl (Generic) Capsules, slide 1 of 1

Doxepin HCl (Generic) Capsules

Prescription Item

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Strength: 50-mg
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Count: 1 capsule

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Doxepin HCl is a medication prescribed to help treat depression or anxiety. It comes in an easy-to-administer capsule and may help improve quality of life. Customers may receive this drug under the names Sinequan, Silenor.


Doxepin is indicated as adjunctive therapy of psychogenic dermatoses (any skin irritation or lesion that is self-inflicted), particularly those that are caused by anxiety.

Possible Side Effects

Doxepin has less potential for adverse cardiac effects than many other tricyclics, but instances of ventricular arrhythmias have been reported, particularly after overdoses. It may also cause extreme excitability, gastrointestinal distress, or lethargy. Other side effects are possible. Contact your vet at once you notice any adverse reactions or strange behaviors after starting Doxepin.

Drug & Food Interactions

Do not feed a pet aged cheese or use flea/tick collars while using Doxepin; they can cause toxicity and possibly death. Other foods and drugs can interact with this medication, so contact your vet before starting anything new.


Prescribers should inform caregivers about the benefits and risks associated with treatment with doxepin and should counsel them in its appropriate use.

This drug is FDA-approved for human use. However, it is common practice for veterinarians to prescribe such drugs for use in dogs and cats.

NOTE: For Generic Medications, picture displayed may not depict actual product. Generic medications may vary from one order to the next by size, color and shape depending on manufacturer.

  1. Prescribing Information

See all items by Doxepin

  • Item Number
  • Common Brand Name(s)
    Sinequan, Silenor
  • For Use With
    Dogs & Cats
  • Generic Name
    Doxepin Hydrochloride
  • Administration Form
  • Product Form
  • Health Condition
    Anxiety, Behavior Issues
  • Drug Type


Recommended Dosage

Always follow the dosage instructions provided by your vet. Do not stop administering this medication or change dosage without explicit instructions from a professional.

Storage Instructions

Store at temperatures between 68° - 77°F.


What is Doxepin HCl Capsules?

Doxepin HCl is recommended for the treatment of psychoneurotic pets with depression and/or anxiety.

What are the benefits of Doxepin HCl Capsules?

  • Prescription medication for pets suffering from depression or anxiety.
  • Easy to administer capsule.

How is this medication given?

Doxepin HCl Capsules is given by mouth. Duration of treatment depends on the reason for and response to treatment. Always follow the dosage instructions provided by your veterinarian. If you have difficulty giving the medication, contact your veterinarian. This medication should only be given to the pet for whom it was prescribed.

What results can I expect?

Doxepin HCl Capsules will not cure allergies but can help reduce the symptoms. The effects will disappear if the medication is discontinued. Results may not be immediate and it can take several weeks to see improvement.

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