Doxepin is an anti-depressant medication of the tricyclic class. Medications in this class are often referred to as tricyclic anti-depressants or TCAs. Depression is an all-pervasive sense of sadness and gloom. In some patients with depression abnormal levels of neurotransmitters chemicals that the nerve cells use to communicate with each other may be the cause of the depression. Nortriptyline elevates mood by raising the level of neurotransmitters in the brain.

The dose of doxepin is tailored to the patients needs. Sometimes physicians will start with relatively low doses such as 25mg given three times a day to reduce the risk of excessive sedation early in the course doses then will be increased slowly. It may take several weeks before the effects of a dose are maximal. Other physicians prefer to give nortriptyline once daily in which case it is generally given at bedtime to take advantage of its sedating properties. Elderly persons and patients with advanced liver disease may need lower doses.

The most commonly encountered side effects associated with doxepin include rapid heart rate blurred vision urinary retention difficulty urinating dry mouth constipation weight gain or loss and low blood pressure when going from sitting to standing orthostatic hypotension. Rash hives seizures and hepatitis are rare side effects. Doxepin also can cause elevated pressure in the eyes of some patients with glaucoma. Overdose with doxepin can cause life threatening abnormal heart rhythms or seizures.

If antidepressants are discontinued abruptly symptoms may occur such as dizziness headache nausea changes in mood or changes in the sense of smell taste etc. Such symptoms even may occur when even a few doses of antidepressant are missed. Therefore it is recommended that the dose of antidepressant be reduced gradually when therapy is discontinued.

Doxepin exaggerates the effects of other medications and drugs that slow the brains processes such as alcohol barbiturates benzodiazepines e.g. lorazepam Ativan and narcotics. Reserpine given to patients taking TCAs can have a stimulatory effect. Doxepin and other TCAs should not be used with monoamine oxidase inhibiting drugs for example isocarboxazid Marplan phenelzine Nardil tranylcypromine Parnate and procarbazine Matulane. High fever convulsions and even death can occur when these drugs are used together

Cimetidine Tagamet can increase doxepin blood levels possibly causing side effects.

Doxepin is used to elevate the mood of patients with depression. Nortriptyline is also a sedative and is useful in depressed patients with insomnia restlessness and nervousness. It also has been found to be helpful for treating chronic pain and the pain of neuralgia.

Doxepin should be stored below 86°F 30°C in a tight light resistant container.

You need to take following precautions before taking Adapin and while you are taking this drug. Inform your doctor in advance?brbr1. If you are allergic to Adapin or any other medicinebrbr2. If you are taking or have taken within the last 2 weeks any prescription and non prescription drugs especially antihistamines anticoagulants [warfarin Coumadin] cimetidine Tagamet estrogens fluoxetine Prozac levodopa Sinemet Larodopa lithium Eskalith Lithobid MAO inhibitors [phenelzine Nardil tranylcypromine Parnate]. You also need to inform about medication for high blood pressure seizures Parkinsons disease diabetes asthma colds or allergies methylphenidate Ritalin muscles relaxants oral contraceptives sedatives sleeping pills thyroid medications tranquilizers and vitamins. brbr3. If you have or ever had history of disease like glaucoma diabetes seizures or liver kidney heart disorders or you are suffering from an enlarged prostate difficulty urinating or an overactive thyroid gland. brbr4. If you are pregnant planning to become pregnant or breast-feedingbrbrIf you become pregnant while taking Doxepin inform your doctor immediately.