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Depression
20 min read
Written by Klarity Editorial Team
Published: Oct 31, 2022
Medically Reviewed by Dr. Fatima Zaidi
Tricyclics are usually prescribed when antidepressants like SSRIs and SNRIs don’t work. If you are researching tricyclic antidepressants, chances are you have tried first-line depression treatments and they haven’t been effective in treating your treatment-resistant depression.
However, there are many different tricyclic antidepressants and figuring out which one is best for you can be overwhelming.
That’s why we’ll explore the major differences between two tricyclic antidepressants—Pamelor and Protriptyline—in this article.
We’ll discuss—
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Pamelor | Protriptyline | |
Drug Class | Tricyclic antidepressant | Tricyclic antidepressant |
Brand / Generic Status | Brand name for nortriptyline | Generic (Brand name: Vivactil) |
Form(s) of the Drug | • Immediate-release capsules • Clear, cherry-flavored liquid suspension | Immediate-release tablets |
Standard Dosage | Capsules: • 10mg • 25mg • 50mg • 75mg Liquid suspension: • 10mg per dose | Tablets: • 5mg • 10mg |
Conditions Treated | FDA-approved uses: • Major depressive disorder Off-label uses: • Diabetic neuropathy • Migraines • Postherpetic neuralgia or post-shingles skin pain • Neurogenic cough • Chronic pain • Persistent myofascial pain • rigeminal neuralgia or painful shock sensations on the face | FDA-approved uses: • Major depressive disorder Off-label uses • Anxiety disorders • Narcolepsy • Sleep apnea • Attention deficit disorder |
Cost | Generic form (nortriptyline): • $13 for a 30-day supply Brand name: • $1250 for a 30-day supply (no insurance) • $10 for a 30-day supply (with insurance) | Generic form (protriptyline): • $86 to $100 for a 30-day supply • $50 for a 30-day supply with insurance or coupon code Brand name: • Not available for Rx |
Side-Effects | Common side effects: • Blurred vision • Impaired coordination • Physical weakness • Constipation • Nausea and vomiting • Sensitivity to sunlight • Xerostomia or dry mouth • Dizziness • Excessive sweating • Breast gland tissue growth • Insomnia • Drowsiness • Increased need to urinate • Abnormal sensations • Agitation • Urinary retention • Tremoring • Disorientation • Anxiety • Changes in blood sugar levels • Confusion • Galactorrhea or nipple discharge • Skin rash • Itchy skin • Restlessness | Common side effects: • Increased anxiety or agitation • Nausea • Abdominal pain • Dry mouth • Constipation • Headache • Insomnia • Dizziness or lightheadedness • Blurred vision • Rash • Peripheral neuropathy: tingling sensation in extremities • Confusion or altered mental status • Sexual dysfunction: decreased libido, inability to orgasm |
Warnings For Use | Drug interactions: • Arbutamine • Blood thinning medications like Warfarin • Disulfiram • Thyroid Supplements • Anticholinergic drugs • Clonidine • Guanabenz • MAOIs | Drug interactions: • Acetylcholinesterase inhibitors • Thyroid supplements • Certain high blood pressure medications, including clonidine • MAO inhibitors • Antiarrhythmic medications: quinidine, flecainide • SSRI antidepressants |
Both protriptyline (brand name Vivactil) and Pamelor belong to the same class of drugs, tricyclics. These medications are FDA-approved to treat the symptoms of depression. They may also be prescribed on- or off-label to treat other mental health conditions such as anxiety and attention deficit hyperactivity disorder (ADHD).
Tricyclic antidepressants are drugs that get their name from their three-ring chemical structures. In general, tricyclics are used to treat symptoms of major depressive disorder and other conditions like anxiety disorders. They block the reabsorption of serotonin and norepinephrine, increasing levels of these two neurotransmitters to relieve symptoms of depression.
However, unlike more modern antidepressant medications, tricyclics are nonselective, meaning they affect serotonin receptors all over the body. As a result, tricyclic antidepressants are often prescribed when first-line depression treatments like SSRIs and SNRIs fail to adequately treat the depression symptoms of major depressive disorder.
Depression is a common psychiatric disorder worldwide, and medications like protriptyline and Pamelor are commonly used as antidepressant treatments. These medications are frequently used to treat major depressive disorder. Most patients begin experiencing relief from depression after about a month of taking them.
Along with depression, protriptyline also treats other psychiatric conditions that can be improved by increasing the concentration of certain neurotransmitters.
Off-label uses may include:
Pamelor is usually used to decrease symptoms of depression but is also effective at treating diabetic patients with nerve pain.
Off-label uses may include:
Pamelor is available in two different forms—capsule form and an oral solution. Pamelor capsules come in 10mg, 25mg, 50mg, and 75mg dosages. The oral solution is available in a 10mg/5ml dose for patients with difficulty swallowing.
Pamelor does have several common side effects. It’s not common to experience all of these at once, and many diminish or fade over time. However, if you feel uncomfortable, please inform your healthcare provider immediately to avoid serious complications.
Some side effects seen in Pamelor are:
It’s important to inform your healthcare provider about every medication you are currently taking to avoid serious drug interactions. Some medications that cannot be mixed with Pamelor include thyroid supplements, certain high blood pressure medications, blood thinners such as warfarin, and heart medication such as quinidine. Pamelor can cause negative side effects for people with cardiovascular disease.
Patients should stop taking MAO inhibitors 14 days before starting Pamelor. MAO inhibitors to avoid are Isocarboxazid, Linezolid, Methylene blue injection, Phenelzine, Rasagiline, Selegiline, and Tranylcypromine.
The cost of Pamelor depends on your insurance, pharmacy, and dosage. On average, a 30-day supply of 10mg Pamelor capsules will cost around $1,200. The generic formula, nortriptyline, is much less expensive at around $21 for a month’s supply.
Protriptyline is available in tablets in doses of 5mg and 10mg. Initially, a person will start with one 5mg tablet per day and increase it as needed. The maximum dose of protriptyline is 60mg and should not exceed that limit.
Protriptyline has some side effects to be aware of. If you experience prolonged or severe side effects, inform your healthcare provider immediately.
Some of protriptyline’s most common side effects of protriptyline are:
Protriptyline has many drug interactions, some of which can be life-threatening. Certain interactions can cause serious conditions such as cardiovascular disease and hypotension. It’s also contraindicated for patients with seizure disorders and heart problems, such as heart block, hyper or hypotension, and recent heart attacks and palpitations.
Protriptyline should not be taken with SSRIs, SNRIs, or MAOIs to prevent serotonin syndrome—a condition that can cause a hypertensive crisis, seizures, high fevers, and can be deadly.
It’s recommended to stop taking these types of medications for 14 days before starting protriptyline, so they have time to leave your system and prevent any serious contraindications.
You should not drink alcohol while taking tricyclic antidepressants, as it could cause increased drowsiness, agitation, and—in extreme cases—coma or death.
Protriptyline’s cost depends on factors like which pharmacy you use, insurance coverage, and dosage. On average, protriptyline costs around $55 for 30 5mg tablets. Patients usually need to take several doses a day, meaning a month’s supply could cost $110 or more.
Yes, you need a prescription to take protriptyline, Pamelor, and other medications used to treat depression.
To learn more about whether Pamelor or protriptyline is right for you, book an online appointment on Klarity today. The healthcare providers on Klarity are certified and licensed in diagnosing and treating depression and coinciding conditions. If needed, they can write a prescription to be filled the same day. Simply pick it up at your local pharmacy.
If not properly monitored, tricyclics can cause serious side effects. Below are detailed descriptions of what to look for.
Serotonin syndrome occurs when the brain is deeply saturated with serotonin. When the brain has too much serotonin, it can cause serious complications, such as high fevers, agitation, palpitations, and muscle rigidity. If you experience any of these symptoms, contact your healthcare provider immediately.
It is essential to consult a healthcare professional before starting, stopping, or changing any medication during pregnancy or breastfeeding.
Pregnancy:
The use of TCAs during pregnancy may carry some risks, but these risks need to be weighed against the potential benefits of treatment, particularly in cases of severe depression or other conditions for which TCAs are prescribed. Some studies have shown a slight increase in the risk of congenital malformations, preterm birth, or low birth weight with TCA use during pregnancy. However, other studies have not found significant risks.
Each TCA may have slightly different risks associated with its use during pregnancy. A healthcare professional will carefully consider the potential risks and benefits of each medication and may recommend an alternative treatment if deemed necessary.
Breastfeeding:
TCAs are excreted in milk, and their use during breastfeeding carries some potential risks for the nursing infant. The American Academy of Pediatrics generally classifies TCAs as drugs for which the effect on nursing infants is unknown but may be of concern.
Infants exposed to TCAs through breast milk may experience side effects, such as drowsiness, irritability, or poor feeding. The risk depends on the specific TCA, the dose, and the individual mother-infant pair.
A healthcare professional can help determine the most appropriate course of action, which may include monitoring the infant for side effects, adjusting the medication dose, or considering alternative treatments.
Tricyclics have been shown not to cause serious bleeding risks when taken alone. However, they may cause bleeding issues when taken with warfarin or other blood thinners.
A black box warning is the strongest warning that the U.S. Food and Drug Administration (FDA) can place on a prescription drug, highlighting the potential risks associated with its use.
Pamelor (nortriptyline), protriptyline, and other tricyclic antidepressants (TCAs) have a black box warning related to the increased risk of suicidal ideation and behavior in children, adolescents, and young adults.
The black box warning for TCAs states that:
It’s essential to consult a healthcare professional before starting, stopping, or changing any medication. They can provide guidance on the most appropriate treatment options for each individual’s specific needs and circumstances.
No, Pamelor, protriptyline, and other tricyclics are not the same drug. Though they all help stabilize your mood and are in the same class of drug, each tricyclic is slightly different than the others. This variety is to help ensure a wider range of people can benefit from them, as they may have slightly different symptoms and contraindications.
Pamelor is an off-label treatment for anxiety, which means it’s effective in treating anxiety, but is not FDA-approved for that use. This distinction simply means that Pamelor hasn’t gone through the rigorous testing required for FDA approval, but it is considered safe enough to prescribe for uses other than the approved use.
Pamelor has been shown to be more effective in treating anxiety symptoms when compared to protriptyline. Pamelor is also an off-label treatment for anxiety-related disorders, including panic disorders, PTSD, and social anxiety disorder.
Though both of these medications help balance brain chemistry and alleviate depression symptoms, protriptyline is the first choice treatment for depression. It has fewer sedative effects and is a more potent antidepressant.
Though protriptyline has fewer sedative effects than Pamelor, it’s advisable to avoid operating a car or other heavy machinery until you know how either medication affects you.
Drinking alcohol with these medications can cause serious conditions resulting from the alcohol and antidepressants amplifying each other’s effects. You can become very nauseated and drowsy and even experience severe or life-threatening symptoms. You should avoid alcohol if taking these medications.
Both of these medications often require 3 to 4 doses per day. Individuals may have an easier time keeping up with this regimen if they take one dose with each meal and one as they’re readying for bed.
It’s important never to exceed the daily prescribed dosage to avoid serious drug side effects.
If you have treatment-resistant depression, then first-line depression treatments like SSRIs and SNRIs likely haven’t helped treat depression. You’ll need to explore other antidepressants to try and find one that treats your depression.
Pamelor and protriptyline are two tricyclic antidepressants that might be able to treat depression effectively. Book an appointment on Klarity, and you’ll be able to discuss treatment options with a board-certified medical provider in 48 hours or less.
Sources:
“Protriptyline – Statpearlsz “ – NCBI Bookshelf
https://www.ncbi.nlm.nih.gov, https://www.ncbi.nlm.nih.gov/books/NBK499828/
Accessed September, 29. 2022.
“Nortriptyline versus fluoxetine the treatment of antidepressives” – NCBI Bookshelf
https://www.ncbi.nlm.nih.gov, https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3284259/
Accessed September, 29. 2022.
“Bleeding incidence with concomitant use of antidepressants and warfarin” – NCBI Bookshelf
Accessed September, 29. 2022.
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