Choosing between SSRIs (like common antidepressants) and NDRIs (a different type) for depression involves a few key differences. SSRIs are often the go-to, causing fewer side effects. But if SSRIs don’t work well or cause issues, people might opt for NDRIs like bupropion. It affects different brain chemicals and has fewer sexual side effects. Both can treat depression, but the choice depends on individual needs.
If you’re considering a prescription for SSRIs or NDRIs or want to discuss your current prescription with a provider, an online psychiatry platform is a good place to start. Platforms like Talkiatry and Brightside Health can connect you with a provider quickly and offer assessments and prescription consultation.
What Are SSRI Antidepressants?
Selective serotonin reuptake inhibitors (SSRIs) are frequently prescribed medications for managing depression. These drugs enhance serotonin levels in the brain, a neurotransmitter linked to mood regulation. Some of them are also FDA-approved for various conditions like anxiety disorders and panic disorders.1
SSRI is also used for off-label uses, including addressing binge eating disorders, managing symptoms associated with menopause, and assisting with conditions like fibromyalgia.
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How Do SSRIs Work?
SSRIs, such as Prozac and Zoloft, help treat symptoms of depression by increasing a brain chemical called serotonin. This is important because low serotonin is linked to feelings of sadness. These meds, like vilazodone, work by making sure serotonin sticks around in the brain longer, helping to boost mood.
Some of the most common SSRI medications include:1
- Prozac (fluoxetine)
- Zoloft (sertraline)
- Paxil (paroxetine)
- Luvox (fluvoxamine)
- Celexa (citalopram)
- Lexapro (escitalopram)
- Viibryd (vilazodone)
*Medications within the SSRI drug class have a black box warning. These are the most serious type of warnings from the Food and Drug Administration (FDA). SSRIs can increase the risk of suicidal thoughts and behaviors in children, adolescents, and young adults. Regardless of age, you should talk with your doctor about severe risks with SSRIs before starting treatment.
What Are NDRI Antidepressants?
Norepinephrine and dopamine reuptake inhibitors (NDRIs) are antidepressants that enhance mood by increasing levels of specific brain chemicals—norepinephrine and dopamine.2 NDRIs, exemplified by bupropion (Wellbutrin), operate by preventing the reabsorption of these neurotransmitters, allowing them to stay active in the brain for longer periods.
This prolonged activity aids in mood regulation. Bupropion is a widely prescribed NDRI in the U.S., often selected for its unique approach and a tendency for fewer sexual side effects compared to certain other antidepressants.
How Do NDRIs Work?
Norepinephrine and dopamine reuptake inhibitors (NDRIs) work by preventing the reabsorption of certain brain chemicals, like norepinephrine and dopamine. This ensures more of these active mood-regulating substances stay in the brain. Norepinephrine helps with stress response, sleep, alertness, and blood pressure, while dopamine affects movement, motivation, and pleasure.
NDRIs, considered atypical antidepressants, are different from other antidepressants. They are used to treat conditions like major depressive disorder, seasonal affective disorder, nicotine addiction, SSRI-associated sexual issues, bipolar depression, and attention-deficit hyperactivity disorder.2
Some of the most common NDRI medications include:2
Bupropion is the primary NDRI available on the market. Sold under brand names like Aplenzin and Wellbutrin, it’s often prescribed by doctors as an alternative or addition to other treatments if initial therapies haven’t shown improvement.
*Medications within the NDRI drug class have a black box warning. These are the most serious type of warnings from the Food and Drug Administration (FDA). SSRIs can increase the risk of suicidal thoughts and behaviors in children, adolescents, and young adults. Regardless of age, you should talk with your doctor about severe risks with SSRIs before starting treatment.
What Are the Differences Between SSRIs & NDRIs?
The key differences between SSRIs (selective serotonin reuptake inhibitors) and NDRIs (norepinephrine and dopamine reuptake inhibitors) lie in their mechanisms of action and the neurotransmitters they primarily target. SSRIs, such as Prozac and Zoloft, primarily increase serotonin levels in the brain, addressing mood regulation.
In contrast, NDRIs like bupropion (Wellbutrin) work by blocking the reabsorption of norepinephrine and dopamine, affecting stress response, alertness, and motivation.
Differences in How SSRIs & NDRIs Work
SSRIs, like Prozac and Zoloft, mainly impact serotonin, a mood-regulating neurotransmitter. They work by keeping more serotonin active in the brain by stopping its reabsorption.
NDRIs, such as Wellbutrin (bupropion), affect norepinephrine and dopamine, which play roles in stress response and motivation. NDRIs increase the availability of these neurotransmitters in the brain by preventing their reabsorption.
What Are SSRIs Vs. NDRIs Used to Treat?
SSRIs (selective serotonin reuptake inhibitors) are commonly used as first-line treatments for depression and various psychiatric disorders due to their safety and efficacy. They are also approved for conditions like generalized anxiety disorder, obsessive-compulsive disorder, and panic disorder.
On the other hand, NDRIs (norepinephrine and dopamine reuptake inhibitors), exemplified by bupropion, are often utilized as alternatives for treating depression. For individuals who do not respond well to or cannot tolerate SSRIs, they can be valuable options for tailored treatment approaches.
Conditions that SSRIs generally treat include:1
- Major depressive disorder
- Generalized anxiety disorder
- Obsessive-compulsive disorder
- Panic disorder
- Social anxiety disorder
- Bulimia nervosa
- Bipolar depression
- Post-traumatic stress disorder (PTSD)
- Premenstrual dysphoric disorder (PMDD)
- Treatment-resistant depression
Conditions that NDRIs generally treat include:2
- Major depressive disorder (especially when SSRIs are ineffective or not tolerated well)
- Seasonal affective disorder
- Nicotine addiction/smoking cessation
- SSRI-associated sexual dysfunction
- Bipolar depression
- Attention-deficit hyperactivity disorder (ADHD)
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Are SSRIs or NDRIs More Effective?
The effectiveness of SSRIs (selective serotonin reuptake inhibitors) and NDRIs (norepinephrine and dopamine reuptake inhibitors) varies from person to person. SSRIs are often considered safe and effective for various mood disorders, while NDRIs like bupropion can be more suitable when SSRIs don’t work well or cause side effects. It depends on individual responses, symptoms, and medical history. Consulting with a healthcare professional helps determine the most effective and well-tolerated treatment.
Side Effects of SSRIs Vs. NDRIs
SSRIs and NDRIs, like bupropion, can have different side effects. Common side effects of both types of medications include sleep disturbances and gastrointestinal issues. While many side effects are mild and temporary, serious side effects such as serotonin syndrome and suicidal thoughts require medical attention.
Common side effects from taking SSRIs may include:1
- Sexual dysfunction
- Sleep disturbances
- Weight changes
- Anxiety
- Dizziness
- Xerostomia (dry mouth)
- Headache
- Gastrointestinal distress
Serious side effects from taking SSRIs may include:1
- Serotonin syndrome (heightened risk with multiple serotonergic medications)
- Suicidal thoughts
- Bruising or bleeding easily
- Confusion
- Movement problems
- Hallucinations
- Difficulty urinating
Common side effects from taking NDRIs may include:2
- Headache
- Dizziness
- Dry mouth
- Sore throat
- Nausea
- Constipation
- Trouble sleeping
Serious side effects from taking NDRIs may include:2
- Seizures
- High blood pressure
- Angle-closure glaucoma (sudden eye condition leading to vision loss)
- Suicidal thoughts
*Antidepressant medications have a risk of side effects, including serious side effects. You should talk with your health care professional about the benefits and risks of any medication before starting treatment.
Warnings & Precautions for SSRIs Vs. NDRIs
Both SSRIs and NDRIs have specific warnings and precautions requiring immediate medical attention. For NDRIs like bupropion, these include neuropsychiatric events during smoking cessation, seizure risk, and hypertension. For SSRIs like fluoxetine, warnings include allergic reactions, activation of mania/hypomania, seizures, bleeding risk, and other potential side effects.
Risks to consider when taking SSRIs & NDRIs include:1,2
- Allergic reactions: Both classes pose a risk of allergic reactions, with symptoms such as rash or other allergic phenomena requiring immediate discontinuation of the medication. It is essential to promptly notify a healthcare provider if such reactions occur.
- Increased risk of suicide: A boxed warning for all antidepressants, including SSRIs and NDRIs, highlights the potential risk of increased suicidal thoughts, especially in children, adolescents, and young adults.
- Seizures: NDRIs, particularly bupropion, carry a risk of seizures, which is dose-related. Gradual dose increases and limiting daily doses can help minimize this risk. Immediate discontinuation is recommended if a seizure occurs.
- Hypertension: NDRIs, specifically bupropion, can elevate blood pressure. Regular monitoring, especially if using nicotine patches for smoking cessation, is advised.
- QT prolongation: SSRIs, like fluoxetine, may prolong the QT interval, leading to ventricular arrhythmias. Caution is warranted in conditions predisposing to arrhythmias or increased exposure.
- Serotonin syndrome: Both classes, SSRIs and NDRIs, may induce serotonin syndrome, especially when co-administered with other serotonergic agents. Awareness of symptoms like confusion, hallucinations, and rapid heart rate is crucial for timely intervention.
- Activation of mania/hypomania: Both SSRIs and NDRIs pose a risk of activating mania or hypomania, emphasizing the need to screen patients for bipolar disorder and closely monitor for associated symptoms.
*There may be additional warnings or precautions with these medications. Talk with your healthcare provider about all risks before you start taking this medication.
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Potential Drug Interactions With SSRIs Vs. NDRIs
When using SSRIs like fluoxetine or NDRIs like bupropion, it’s important to be aware of potential interactions with other substances. If you’re taking bupropion, adjustments might be needed when combining it with certain medications.
For fluoxetine and other SSRIs, there’s a broader range of potential interactions, including with antidepressants, antipsychotics, and drugs affecting blood clotting. Combining fluoxetine with olanzapine has specific considerations detailed in the medication information. Understanding these interactions is crucial to ensure the safe and effective use of these medications.
Disclaimer: Taking certain medications, herbs, or supplements alongside SSRI or NDRI can change how these medications work in your body or increase the risk of serious side effects. This article does not consider all the possible interactions. Please let your doctor, psychiatrists, and pharmacists know about all the products you currently use, such as prescription medication, nonprescription drugs, and herbal supplements. Do not start, stop, or change the dosage of any medicines without your doctor’s approval.
Which Is Right for You: SSRIs or NDRIs?
Choosing between SSRIs and NDRIs depends on several factors, and it’s essential to discuss these with your healthcare provider. If you’re pregnant or breastfeeding, certain medications may be preferred or avoided due to potential effects on the developing fetus or nursing infant.
Other health conditions, such as epilepsy or high blood pressure, may influence the choice of medication, as NDRIs like bupropion carry specific considerations for seizure risk and blood pressure elevation. Your provider will consider your individual health history, the specific symptoms you’re experiencing, and any potential side effects or interactions with other medications.
How to Get a Prescription for SSRIs or NDRIs
Your primary care physician, psychiatrist, or mental health specialist can prescribe these drugs after evaluating your symptoms and medical history. They’ll discuss your condition and treatment options, including the benefits and potential risks of SSRIs or NDRIs, tailoring the choice based on your specific needs.
In cases where in-person consultations aren’t feasible, online psychiatry services can provide assessments, offer guidance on medication options, and conduct virtual appointments to discuss treatment plans. These platforms enable comprehensive evaluations and discussions about the suitability of SSRIs or NDRIs as potential treatments for your condition.
Questions to Ask Your Health Team About SSRIs or NDRIs
Effective communication with your healthcare team is crucial when considering SSRIs or NDRIs as part of your treatment plan. To make the most of your appointment, it’s essential to come prepared with questions and concerns.
Questions to ask your prescriber about SSRI or NDRI include:
- Is it safe to take SSRI or NDRI with my other medications?
- Will SSRI or NDRI be covered by my insurance?
- Which one has the best results as a treatment for depression or anxiety?
- Does my medical history increase my risk of side effects for either?
- How long can I expect side effects to last?
- How often should I see you for checkups while taking SSRI or NDRI?
- What should I do if I am unsure whether antidepressants are right for me?
- Are there specific lifestyle changes I should consider while taking SSRIs or NDRIs?
- Can these medications affect my energy levels or sleep patterns?
- Are there potential interactions between SSRIs or NDRIs and certain foods or beverages?
- How soon can I expect to notice improvements in my symptoms after starting these medications?
- Are there any alternatives to SSRIs or NDRIs that I should be aware of?
- Will I need to taper off these medications if I decide to stop taking them?
- Are there particular side effects that I should report immediately if they occur?
- How might SSRIs or NDRIs affect my ability to function at work or in my daily activities?
- Can I engage in alcohol consumption while taking SSRIs or NDRIs?
- Are there any support groups or resources you recommend for individuals taking these medications?
What to Do If Your SSRI or NDRI Isn’t Working
If you find that your SSRI or NDRI isn’t producing the desired effects, it’s crucial to communicate with your healthcare provider promptly. They can assess your response to the medication and may suggest adjustments, such as changing the dosage or trying a different antidepressant. Understanding how long it takes for antidepressants to work is essential; it varies among individuals.
Your provider will work with you to develop a tailored plan, which may involve patience as the therapeutic effects may take some time to manifest. Open and honest communication about your experience is key to finding an effective solution and optimizing your mental health treatment.
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