Side Effects of Postpartum Depression Medication: What to Expect (and When to Worry)
Introduction
Your doctor just prescribed medication for postpartum depression.
You want to feel better—but you're worried. What if the side effects are worse than the depression? What if the medication affects your baby through breastfeeding? What if you can't tolerate it?
These are valid concerns. And unfortunately, searching "postpartum depression medication side effects" online often leads to horror stories that terrify you instead of informing you.
Here's the truth: Most women experience mild, temporary side effects that improve within 1-2 weeks. Serious side effects are rare. And many medications are safe while breastfeeding.
In this guide, you'll learn:
- What side effects to expect (and which are temporary vs ongoing)
- Which side effects are concerning (when to call your doctor)
- How long side effects typically last
- Medication safety while breastfeeding
- How to manage common side effects
- What to do if a medication doesn't work for you
Let's separate facts from fear—so you can make an informed decision about treatment.
Common Postpartum Depression Medications
Before diving into side effects, here are the most commonly prescribed medications for PPD:
SSRIs (Selective Serotonin Reuptake Inhibitors) - First Line Treatment
Most commonly prescribed:
- Sertraline (Zoloft) - Most frequently prescribed for PPD; extensive breastfeeding safety data
- Escitalopram (Lexapro) - Well-tolerated; good safety profile
- Fluoxetine (Prozac) - Long half-life (stays in system longer)
- Paroxetine (Paxil) - Effective but higher discontinuation side effects
- Citalopram (Celexa) - Similar to Lexapro; well-studied
How SSRIs work: Increase serotonin (mood-regulating neurotransmitter) in your brain. Takes 2-6 weeks to see full effect.
SNRIs (Serotonin-Norepinephrine Reuptake Inhibitors)
Common SNRIs:
- Venlafaxine (Effexor) - For PPD with significant fatigue or anxiety
- Duloxetine (Cymbalta) - Less common for PPD
How SNRIs work: Increase both serotonin and norepinephrine. May be used if SSRIs don't work.
Other Medications
- Bupropion (Wellbutrin) - For PPD with low energy; doesn't typically cause sexual side effects or weight gain
- Zuranolone (Zurzuvae) - NEW FDA-approved pill specifically for postpartum depression (taken for 14 days only)
Note: This guide focuses primarily on SSRIs, as they're the most commonly prescribed and have the most safety data for breastfeeding.
Common Side Effects: What's Normal in the First 2 Weeks
When you start an SSRI, your body needs time to adjust. Most side effects occur in the first 1-2 weeks and then improve or disappear.
Week 1-2: Expected Side Effects (Usually Temporary)
Nausea and Stomach Upset (30-40% of women)
What it feels like: Mild to moderate nausea, occasionally vomiting, upset stomach
Why it happens: Serotonin receptors in your gut are adjusting to increased serotonin
Management:
- Take medication with food (not on empty stomach)
- Start with half dose for first 3-5 days, then increase (ask your doctor)
- Ginger tea or ginger chews
- Small, frequent meals instead of large meals
Timeline: Usually improves by week 2-3
Headaches (20-30% of women)
What it feels like: Mild to moderate tension headaches
Why it happens: Brain chemistry adjusting to new medication
Management:
- Stay hydrated (dehydration worsens headaches)
- Acetaminophen (Tylenol) is safe - ask your doctor about dosage
- Cold compress on forehead
- Rest when possible (easier said than done with a newborn, we know)
Timeline: Usually resolves within 7-14 days
Drowsiness or Fatigue (15-25% of women)
What it feels like: Extra tiredness, difficulty staying awake, brain fog
Why it happens: Medication's sedating effects (varies by SSRI)
Management:
- Take medication at bedtime instead of morning (if drowsy)
- Ensure you're maximizing sleep opportunities (nap when baby naps)
- Caffeine in moderation (safe while breastfeeding in small amounts)
- Give it 2 weeks - often improves as body adjusts
Timeline: Usually improves by week 2-3, or becomes manageable with bedtime dosing
Note: If fatigue worsens depression, talk to your doctor about switching medications.
Sleep Changes (10-20% of women)
What it might look like:
- Drowsiness (more common)
- Insomnia or restless sleep (less common, more often with Prozac)
- Vivid dreams or nightmares
Management:
- If drowsy: Take medication at bedtime
- If insomniac: Take medication in the morning
- Practice sleep hygiene (dark room, white noise, consistent routine)
Timeline: Sleep usually normalizes within 2-3 weeks
Dry Mouth (10-15% of women)
What it feels like: Persistent thirst, sticky mouth, difficulty swallowing
Management:
- Drink more water throughout the day
- Sugar-free gum or mints (stimulate saliva)
- Avoid caffeine and alcohol (worsen dry mouth)
Timeline: May persist but becomes less bothersome over time
Less Common but Still Normal Initial Side Effects
- Dizziness or lightheadedness (especially when standing up quickly) - Usually resolves in 1-2 weeks
- Increased sweating - May persist but usually mild
- Decreased appetite (less common; opposite effect - increased appetite - also possible)
- Jitteriness or restlessness (first few days, then subsides)
Ongoing Side Effects (May Persist After Initial Weeks)
Some side effects may continue even after your body adjusts to the medication. These are usually mild but worth discussing with your doctor if bothersome.
Sexual Side Effects (20-40% of women on SSRIs)
What it might include:
- Decreased libido (reduced interest in sex)
- Difficulty reaching orgasm or no orgasm
- Reduced sensitivity
Why it happens: Increased serotonin can interfere with sexual arousal and response
Management:
- Wait 4-6 weeks - sometimes improves as body adjusts
- "Medication holidays" (skipping 1-2 doses before sexual activity - only with doctor approval)
- Switch to Wellbutrin (bupropion) - least likely to cause sexual side effects
- Add Wellbutrin to your SSRI (counteracts sexual side effects)
Important: Many new mothers have low libido due to hormones, exhaustion, and PPD itself—not just medication. It can be hard to separate medication effects from normal postpartum changes.
Weight Changes (15-25% of women)
What might happen:
- Weight gain (more common - avg 5-10 lbs over 6-12 months)
- Weight loss (less common - usually in first weeks due to appetite suppression)
Why it happens:
- Increased appetite and carb cravings (especially with Paxil, Lexapro)
- Metabolism changes
- Fluid retention
Management:
- Zoloft and Prozac are least likely to cause weight gain
- Focus on nutritious, filling foods (protein, fiber)
- Gentle movement when possible (walking with stroller)
- Remember: Some postpartum weight is normal and expected
- Prioritize mental health over weight concerns (PPD recovery is more important)
Important: If you're struggling with postpartum body image, talk to your therapist—this is a common PPD issue that often improves with treatment.
Emotional Blunting (10-15% of women)
What it feels like: Feeling emotionally "flat" or "numb" - not sad, but not happy either. Like you're going through the motions.
Why it happens: Medication may stabilize mood TOO much, reducing emotional range
Management:
- Give it 6-8 weeks - sometimes improves
- If persists, talk to doctor about lowering dose or switching medications
- Wellbutrin is less likely to cause emotional blunting
Important: This is different from PPD emotional numbness. If you're unsure whether it's medication or depression, talk to your doctor.
Which Side Effects Are Concerning: When to Call Your Doctor
Most side effects are mild and temporary. But some require immediate attention.
Call Your Doctor Immediately If You Experience:
❌ Suicidal thoughts or thoughts of harming yourself or your baby
- SSRIs can rarely increase suicidal thoughts in first 2-4 weeks (especially in women under 25)
- This is a medical emergency - call your doctor, go to ER, or call 988 (Suicide & Crisis Lifeline)
❌ Severe agitation, restlessness, or panic attacks
- May indicate medication is worsening anxiety or causing akathisia (inner restlessness)
❌ Manic symptoms (if you have undiagnosed bipolar disorder, SSRIs can trigger mania)
- Racing thoughts
- Extreme energy (not sleeping for days)
- Impulsive, risky behavior
❌ Severe allergic reaction
- Rash, hives, swelling, difficulty breathing
- Seek emergency care immediately
❌ Serotonin syndrome (RARE but serious - usually only if taking multiple serotonin-affecting medications) Symptoms:
- High fever
- Confusion, agitation
- Rapid heart rate
- Muscle rigidity or twitching
- Severe sweating, shivering
❌ Severe, persistent nausea or vomiting (unable to keep food/water down)
❌ Any side effect that feels unbearable or dangerous
Call Your Doctor Soon (Non-Emergency) If You Experience:
- Side effects that don't improve after 2-3 weeks
- Side effects that interfere with caring for your baby
- Sexual side effects that are distressing
- Weight gain over 10-15 lbs
- Emotional blunting that persists beyond 6-8 weeks
Remember: Your doctor can adjust your dose, switch medications, or add strategies to manage side effects. Don't suffer in silence.
How Long Do Side Effects Last?
Timeline for Common Side Effects
| Side Effect | Onset | Peak | Resolution |
|---|---|---|---|
| Nausea | Days 1-3 | Days 3-7 | Week 2-3 (usually gone) |
| Headaches | Days 1-5 | Days 3-10 | Week 2-3 (usually gone) |
| Drowsiness | Days 1-7 | Week 1 | Week 2-3 (improves) or manage with timing |
| Jitteriness | Days 1-3 | Days 2-4 | Week 1 (resolves) |
| Sexual side effects | Week 2-4 | Week 4-6 | May persist (discuss with doctor) |
| Weight changes | Week 4+ | Months 3-6 | May persist (varies by medication) |
Key takeaway: The worst side effects happen in the first 1-2 weeks. If you can push through those initial weeks, most side effects improve significantly.
Postpartum Depression Medication and Breastfeeding: Is It Safe?
This is one of the most common concerns mothers have. The good news: Many antidepressants are considered safe while breastfeeding.
Safest SSRIs for Breastfeeding (Most Data Available)
1. Sertraline (Zoloft) - GOLD STANDARD for breastfeeding
- Minimal transfer to breast milk (very low levels detected in infants)
- Most studied SSRI for breastfeeding (decades of safety data)
- Recommended by American Academy of Pediatrics for breastfeeding mothers
2. Paroxetine (Paxil)
- Minimal transfer to breast milk
- Good safety profile for breastfeeding
- Caution: Harder to discontinue (more withdrawal symptoms) than other SSRIs
3. Escitalopram (Lexapro) and Citalopram (Celexa)
- Low transfer to breast milk
- Generally considered safe for breastfeeding
- Moderate amount of safety data
SSRIs with More Caution (Still Used, But Less Ideal)
Fluoxetine (Prozac)
- Long half-life means it stays in your system (and breast milk) longer
- Higher levels detected in infant blood compared to other SSRIs
- Still used, but typically not first choice for breastfeeding mothers
- May be prescribed if you had good response to Prozac pre-pregnancy
What the Research Shows
Multiple large studies show:
- No increased risk of developmental delays in babies exposed to SSRIs through breast milk
- No increased risk of cognitive or motor development problems
- Benefits of treating maternal depression outweigh minimal theoretical risks
Important context:
- Untreated postpartum depression harms babies (impaired bonding, delayed development, increased risk of abuse/neglect)
- Treating your PPD benefits your baby even if trace amounts of medication transfer through milk
Monitoring Your Baby
If you're taking SSRIs while breastfeeding, watch for (RARE):
- Excessive sleepiness or lethargy
- Poor feeding
- Irritability or fussiness
- Poor weight gain
These are uncommon, but if you notice any of these, contact your pediatrician.
Formula vs Medication: You Don't Have to Choose
If someone suggests you stop breastfeeding to take medication, get a second opinion.
The research is clear: Continuing breastfeeding while taking SSRIs is generally safe. You don't have to choose between medication and breastfeeding.
That said: If breastfeeding is a significant stressor that's worsening your PPD, it's okay to stop or supplement with formula. Fed is best—and a mentally healthy mother is best for baby.
How to Manage Common Side Effects
Nausea
✅ Take medication with food ✅ Start with half dose (ask doctor) ✅ Ginger tea or anti-nausea wristbands ✅ Small, frequent meals ✅ Ask about anti-nausea medication (safe while breastfeeding)
Drowsiness
✅ Take medication at bedtime ✅ Ensure adequate sleep (nap when baby naps) ✅ Moderate caffeine in morning ✅ Give it 2 weeks - often improves
Insomnia
✅ Take medication in the morning ✅ Practice sleep hygiene ✅ Avoid screens 1 hour before bed ✅ Ask about low-dose trazodone for sleep (sometimes prescribed alongside SSRI)
Sexual Side Effects
✅ Wait 4-6 weeks - may improve ✅ Discuss "medication holidays" with doctor ✅ Consider switching to Wellbutrin ✅ Add Wellbutrin to counteract sexual side effects
Weight Gain
✅ Choose medications less likely to cause weight gain (Zoloft, Prozac) ✅ Focus on protein and fiber (filling, nutritious) ✅ Gentle movement (walking with stroller) ✅ Prioritize mental health recovery over weight concerns
What If the Medication Isn't Working?
Give It Time
- Week 2: You might notice some improvement in sleep or appetite
- Week 4: Mood often starts to lift slightly
- Week 6-8: Full effect is usually reached
If you don't notice ANY improvement by week 6-8, talk to your doctor.
Options If Medication Doesn't Work
- Increase the dose - You might need a higher dose for full effect
- Switch to a different SSRI - Different SSRIs work differently for different people
- Add therapy (CBT) - Combination treatment (medication + therapy) is most effective
- Switch medication class - Try SNRI (Effexor) or Wellbutrin instead
- Add a second medication - Sometimes combining medications is more effective
Important: Don't stop your medication suddenly. Always taper with your doctor's guidance (abrupt stopping can cause withdrawal symptoms).
Stopping Medication: When and How
When Can You Stop?
Typical recommendation: Continue medication for 6-12 months after symptoms improve to prevent relapse.
Factors that influence duration:
- Severity of your PPD
- Whether this is your first or recurrent episode of depression
- Presence of risk factors (trauma, lack of support, financial stress)
- Whether you're doing therapy alongside medication
Important: Many women feel better after 2-3 months and want to stop—but stopping too soon significantly increases relapse risk. Finish the full course.
How to Stop Safely (With Doctor Guidance)
Never stop SSRIs abruptly - this can cause withdrawal symptoms (called "discontinuation syndrome"):
- Dizziness, nausea
- Brain "zaps" (electric shock sensations)
- Flu-like symptoms
- Mood swings, irritability
- Insomnia
Safe tapering:
- Gradually reduce dose over 2-4 weeks (or longer if you've been on medication for years)
- Monitor for withdrawal symptoms
- If symptoms occur, slow the taper
Your doctor will create a personalized tapering plan.
Medication Myths Debunked
Myth #1: "Antidepressants will change my personality"
Truth: SSRIs don't change your personality. They treat depression, helping you feel like yourself again. If you feel emotionally "flat," talk to your doctor—that's emotional blunting (a side effect), not your personality changing.
Myth #2: "I'll be on medication forever"
Truth: Most women take SSRIs for 6-12 months, then taper off successfully. Some women need longer-term treatment (especially if history of depression), but many don't.
Myth #3: "SSRIs are addictive"
Truth: SSRIs are NOT addictive. You don't crave them or need increasing doses. However, you do need to taper off gradually to avoid withdrawal symptoms (that's not addiction—it's your brain adjusting).
Myth #4: "Natural is always better than medication"
Truth: Postpartum depression is a medical condition with biological causes (hormones, brain chemistry). Medication treats the biology. There's no shame in treating a medical condition medically.
Myth #5: "If I take medication, it means I'm weak"
Truth: Taking medication means you're prioritizing your health and your baby's well-being. That's strength, not weakness.
The Bottom Line: Making the Decision
Questions to Ask Your Doctor
- "Why are you recommending this specific medication?"
- "What side effects should I expect in the first 2 weeks?"
- "Is this medication safe while breastfeeding?"
- "How long will I need to take this?"
- "What if the side effects are intolerable—what's the plan?"
- "Should I also do therapy, or medication alone?"
How to Decide If Medication Is Right for You
Consider medication if:
- Your depression is moderate to severe (interfering with daily functioning)
- You've tried therapy alone and it hasn't been enough
- You need faster relief (medication works in 2-4 weeks; therapy takes 6-8 weeks)
- You have a history of depression that responded well to medication
You might prefer therapy first if:
- Your depression is mild
- You strongly prefer non-medication approaches
- You have time and resources for weekly therapy
- You want to address underlying thought patterns (not just symptom relief)
Combination (medication + therapy) is ideal if:
- Your depression is moderate to severe
- You want both immediate relief (medication) and long-term skills (therapy)
- You have risk factors for relapse (history of depression, trauma, lack of support)
Ready to Get Help?
If you're considering medication for postpartum depression or struggling with side effects, Dr. Jana Rundle can help you understand your options and coordinate care with your prescribing provider.
What Bloom Psychology Offers:
- Therapy to complement medication (CBT is most effective when combined with SSRIs)
- Support in managing side effects (coping strategies for nausea, fatigue, etc.)
- Coordination with your OB/GYN or psychiatrist (integrated care approach)
- Medication education and decision support (we'll help you understand your options)
Contact Information:
- Phone: (512) 648-2722
- Email: contact@bloompsychology.com
- Free 15-minute consultation available
Related Resources
On the Bloom Blog:
- The Complete Guide to CBT for Postpartum Depression
- Postpartum Depression Treatment Options: Complete Guide
- Can Postpartum Depression Be Prevented?
Bloom Services:
External Resources:
- LactMed Database - NIH resource on medication safety during breastfeeding
- Postpartum Support International - Resources and provider directory
- MotherToBaby - Evidence-based information on medication safety during pregnancy and breastfeeding
Key Takeaways
- Most side effects are mild and temporary (worst in first 1-2 weeks)
- Nausea, headaches, and drowsiness are most common and usually resolve by week 2-3
- Sertraline (Zoloft) is the gold standard for breastfeeding safety
- Sexual side effects and weight changes may persist but are manageable
- Call your doctor immediately if you have suicidal thoughts, severe agitation, or severe allergic reaction
- Benefits of treating PPD outweigh medication risks (untreated PPD harms both you and baby)
- You don't have to choose between breastfeeding and medication
- Medication + therapy is most effective for moderate-severe PPD
- If medication isn't working after 6-8 weeks, there are other options (don't give up)
- Taking medication for PPD is not weakness - it's health care
You deserve treatment. Your baby deserves a healthy mother. Medication can help you get there.
Word Count: ~2,500 words ✅ Status: Complete draft - REQUIRES DR. JANA MEDICAL REVIEW Medical Review Priority: HIGH (all medication information must be fact-checked) Internal Links: 4 (blog posts + service pages) External Links: 3 (LactMed, PSI, MotherToBaby) Next Steps:
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Frequently Asked Questions
What are the most common side effects of postpartum depression medication?
The most common side effects of SSRIs (the most prescribed PPD medication) include nausea, fatigue, headaches, and changes in sleep or appetite during the first 1-2 weeks. Most side effects are mild and temporary, decreasing significantly after the initial adjustment period. Serious side effects are rare but should be reported to your doctor immediately.
Are postpartum depression medications safe while breastfeeding?
Yes, several antidepressants are considered safe for breastfeeding mothers. Sertraline (Zoloft) and paroxetine (Paxil) have the lowest transfer into breast milk and are preferred first-line options. Your doctor will weigh the benefits of treating your depression (which improves bonding and caregiving) against minimal medication exposure to your baby. The risk of untreated maternal depression is typically greater than medication risks.
How long does it take for PPD medication to start working?
Most mothers begin noticing improvements in mood and energy within 2-4 weeks of starting medication, with full effects appearing by 6-8 weeks. Some symptoms (like sleep and appetite) may improve in the first week, while others (like sadness and motivation) take longer. It's important to continue medication even if you don't feel immediate relief.
Will I gain weight on postpartum depression medication?
Weight changes vary by medication. SSRIs like sertraline (Zoloft) and escitalopram (Lexapro) typically cause minimal weight change. Some mothers lose weight initially due to nausea, then stabilize. Others may gain 5-10 pounds over several months. However, untreated depression often causes more significant weight changes. Discuss weight concerns with your doctor when choosing medication.
Can I stop taking PPD medication once I feel better?
Don't stop medication suddenly without medical guidance. Most doctors recommend continuing treatment for 6-12 months after symptoms improve to prevent relapse, which is common in the postpartum period. When you're ready to stop, your doctor will create a gradual tapering schedule to minimize withdrawal symptoms and monitor for returning depression.
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Dr. Jana Rundle
Clinical Psychologist


