A drop in milk supply during or after COVID is common and usually temporary. Fever, dehydration, fatigue, and the body’s inflammatory response all work against milk production, but most people can rebuild their supply within a few days to two weeks with consistent effort. The key is frequent milk removal, aggressive hydration, and giving your body the extra fuel it needs to recover while also making milk.
Why COVID Tanks Your Supply
When your body fights a viral infection like COVID, it releases a surge of inflammatory molecules, including interleukin-6 and interleukin-8. These proteins redirect your body’s energy toward the immune response and away from non-essential functions, and your body treats milk production as one of those lower priorities. Fever compounds the problem by pulling water from your tissues. Even a mild case with fatigue, muscle pain, and loss of appetite can reduce how often you nurse or pump, and less milk removal signals your body to produce less milk.
The good news: this is a supply-and-demand issue, not permanent damage. Once the infection clears and you resume frequent feeding or pumping, your body gets the message to ramp production back up.
Start With Frequent Milk Removal
The single most effective thing you can do is remove milk more often. Aim for 8 to 12 sessions per day, whether that’s nursing, pumping, or a combination. If your baby is willing, put them to the breast as often as possible. Babies are more efficient than pumps at stimulating the hormonal signals that drive production.
If you’re too exhausted to nurse every time, pump after or between feedings. Even short sessions of 10 to 15 minutes help. Power pumping, where you pump for 20 minutes, rest for 10, pump for 10, rest for 10, and pump for 10 again, mimics cluster feeding and can signal your body to increase output. Do one power pumping session per day for three to five days and assess whether you see a change.
If you stopped nursing entirely while sick because you were too ill, the CDC recommends expressing milk regularly during illness to maintain supply, even if a healthy caregiver is feeding the baby. Restarting after a gap of several days is harder but still possible. The longer the gap, the more patience you’ll need.
Hydration and Calories Matter More Right Now
Breastfeeding already requires an extra 330 to 400 calories per day beyond your pre-pregnancy intake. When you’re recovering from an illness, your caloric needs are even higher because your body is repairing tissue and rebuilding immune defenses at the same time. Skimping on food is one of the most common reasons supply stays low after an illness. Eat calorie-dense, nutrient-rich foods even if your appetite hasn’t fully returned. Nut butters, oatmeal, eggs, avocado, and full-fat dairy are easy options that don’t require much preparation.
Dehydration is the other major factor. COVID symptoms like fever and reduced fluid intake during the worst days leave many people starting recovery already in a deficit. A reasonable target is about 100 ounces of fluid per day, though individual needs vary. Keep a water bottle within arm’s reach during every feeding session. If plain water feels unappealing, electrolyte drinks, broth, coconut water, or herbal tea all count.
Use Skin-to-Skin Contact
Holding your baby skin to skin, with their bare chest against yours, triggers oxytocin release, the same hormone responsible for your letdown reflex. A study in Breastfeeding Medicine found that infants who had skin-to-skin contact at least once per week for a minimum of 60 minutes consumed nearly twice as much breast milk as infants who didn’t (4,132 mL versus 2,226 mL over the study period). While that study looked at hospitalized newborns, the underlying biology applies at any age. Oxytocin doesn’t care whether your baby is two weeks old or six months old.
Try to fit in at least one long skin-to-skin session daily while you’re rebuilding supply. Napping together with your baby on your chest, wearing a loose robe or button-down shirt with nothing underneath, or taking a warm bath together all work. These sessions also help if your baby has become frustrated at the breast due to lower flow and started refusing to latch.
What About Galactagogues?
Herbal supplements marketed as milk boosters are popular, but the evidence is mixed. Fenugreek is the most well-known option. One clinical trial found that mothers drinking fenugreek tea produced significantly more milk than a control group, but a second trial using fenugreek capsules found no difference. A review in the Ochsner Journal concluded that current evidence for fenugreek’s effectiveness is “insufficient.” Fenugreek can also cause nausea, vomiting, and low blood sugar in the mother, and diarrhea in the baby.
Moringa (also called malunggay) has slightly stronger support. A pooled analysis of six studies showed a significant increase in milk production four to seven days after starting moringa supplements. One study also found higher prolactin levels in the 48 hours after delivery among mothers taking moringa. If you want to try an herbal option, moringa has the better track record, though it’s still not a substitute for frequent milk removal and adequate nutrition.
Protect Your Supply From Complications
When supply drops and then comes back unevenly, you’re at higher risk for clogged ducts and mastitis. Engorgement on one side while the other stays soft, inconsistent pumping schedules, and a baby who favors one breast can all set the stage for blocked milk flow.
Watch for warning signs: breast tenderness or warmth, a hard lump, pain or burning during feeding, redness in a wedge-shaped pattern on the skin, and a fever of 101°F or higher. Mastitis can escalate quickly and may require antibiotics. If you notice these symptoms, especially a fever returning after you’ve recovered from COVID, don’t assume it’s a relapse of the virus. It may be a breast infection that needs separate treatment.
Your Milk Is Still Valuable Post-COVID
One reason to push through the effort of rebuilding supply: your breast milk now contains protective antibodies your baby can’t get anywhere else. Research published in the Journal of Clinical Virology found that breastfeeding mothers produced detectable IgA antibodies specific to the SARS-CoV-2 spike protein in their milk starting about 10 days after symptom onset. Those antibody levels remained stable for up to six months. This means your milk is actively helping protect your infant from the same virus you just fought off.
The CDC recommends continuing to breastfeed during and after COVID regardless of vaccination status. Basic hygiene precautions, like washing your hands before nursing or pumping and wearing a mask during close contact while you’re still symptomatic, are sufficient to reduce transmission risk.
A Realistic Timeline
Most people notice their supply beginning to rebound within three to five days of consistent effort. Full recovery to pre-illness levels typically takes one to two weeks, though it can take longer if you were sick for an extended period or if your supply was already marginal before getting COVID. If you’ve been working at it for two weeks with no improvement, a lactation consultant can evaluate your baby’s latch, your pumping technique, and whether other factors like hormonal changes or medication side effects are contributing.
Be patient with yourself during the first few days. Recovery from illness is exhausting on its own, and the pressure to produce enough milk adds stress that can further suppress letdown. Rest when you can, eat and drink consistently, and focus on getting your baby to the breast or pump to your chest as often as possible. The supply-and-demand system is reliable. It just needs consistent signals to recalibrate.