It is possible to produce breast milk without being pregnant. The process, called induced lactation, uses a combination of hormonal preparation, mechanical stimulation, and sometimes medication to coax the breasts into making milk. Full production is rarely achieved, but many people produce enough to partially or meaningfully breastfeed. The timeline typically spans three to six months of preparation before a baby arrives.
How Lactation Works Without Pregnancy
During pregnancy, rising levels of estrogen and progesterone cause the milk-producing tissue in your breasts to develop and expand. At delivery, those hormone levels drop sharply, which allows prolactin (the hormone that actually triggers milk production) to surge. Induced lactation essentially mimics this sequence: first you build up breast tissue with hormones, then you withdraw those hormones and stimulate prolactin to kick-start milk production.
The good news is that you don’t need to have been pregnant before. Breast tissue responds to hormonal signals regardless of whether a pregnancy caused them. This is why induced lactation works for adoptive parents, people using surrogates, and transgender women.
The Hormonal Preparation Phase
The most widely used approach is the Newman-Goldfarb protocol, developed through the Canadian Breastfeeding Foundation. It begins about six months before you expect to need milk. During the first several months, you take an active combined birth control pill daily. This sounds counterintuitive, but the pill’s estrogen and progesterone simulate the hormonal environment of pregnancy, encouraging breast tissue to grow and prepare for milk production.
About six weeks before the baby is expected, you stop the birth control pill. You’ll likely experience withdrawal bleeding, which is normal. This drop in estrogen and progesterone mimics what happens at delivery, signaling your body to shift toward active milk production. At that point, you begin pumping regularly to stimulate prolactin release and train the breast tissue to produce and release milk.
For transgender women, the approach follows the same logic but builds on existing hormone therapy. Estrogen and progesterone doses may be gradually increased during the stimulation phase, then reduced about a month before the baby needs to feed. The Academy of Breastfeeding Medicine notes that estrogen doses during the stimulation phase may go as high as 8 to 12 milligrams daily, with 400 milligrams of progesterone, before being tapered down during the expression phase. Published case reports of successful induced lactation in transgender women exist, though formal research on success rates is still limited.
The Role of Galactagogues
A galactagogue is any substance that promotes milk production. In induced lactation protocols, they’re used alongside hormonal preparation and pumping to boost prolactin levels.
The most effective pharmaceutical option is domperidone, a medication originally designed for gastrointestinal problems that happens to raise prolactin as a side effect. In the Newman-Goldfarb protocol, it’s started at the same time as the birth control pill and continued throughout the entire process, including after the baby arrives. The only published case report of successful induced lactation in a transgender woman involved domperidone.
However, domperidone is not FDA-approved for any use in the United States, and it is not approved anywhere specifically for lactation. The FDA has flagged serious safety concerns, including cardiac arrhythmias, cardiac arrest, and sudden death. The agency has also identified cases of neuropsychiatric adverse events (agitation, anxiety, intrusive thoughts, suicidal ideation) when people suddenly stopped or tapered the medication after using it for lactation. Five of those six reported cases involved doses of at least 90 milligrams per day. In some countries outside the U.S., domperidone is available by prescription and used off-label for lactation support, so access depends heavily on where you live.
Herbal Options
Several herbs have a long traditional history as galactagogues. Fenugreek is the most commonly recommended, with a survey of La Leche League leaders and lactation consultants suggesting positive effects on milk supply in roughly 75% of lactating women. The usual suggested dose is one to four capsules, three or four times daily, though there’s no standardization across brands. A total daily intake of about 1.7 to 4.9 grams is a commonly cited range. Blessed thistle is often paired with fenugreek, typically three capsules of each taken three times a day with meals.
Other herbs used for this purpose include goat’s rue, milk thistle, fennel, marshmallow root, and nettle. Despite their popularity, rigorous clinical evidence for most herbal galactagogues is lacking. What research does exist suggests that even when measurable milk volume increases are modest, the psychological benefit of feeling that something is working can boost confidence and help sustain the effort. Some protocols also recommend eating oatmeal at least three times a week as a simple dietary addition.
Pumping: The Foundation of the Process
No matter what hormonal or herbal support you use, regular breast stimulation through pumping is the single most important factor in establishing a milk supply. Prolactin is released in response to nipple stimulation, and the more frequently you stimulate, the stronger the signal your body receives to produce milk.
Aim for at least six to eight pumping sessions per day, including at least once during the night (prolactin levels are naturally higher overnight). Start slowly: five to ten minutes per session on low suction. Over time, gradually increase each session to 15 to 20 minutes. Shorter, more frequent sessions are more effective than fewer, longer ones. This schedule can feel demanding, but consistency in the early weeks is what builds the supply.
If a baby is available to nurse directly, that’s even more effective than a pump. A baby’s suck stimulates the breast differently and can be a stronger signal for milk production. Many people combine direct nursing with pumping sessions in between.
Supplemental Nursing Systems
Because induced lactation rarely produces a full milk supply right away (and may never reach full production), most people use a supplemental nursing system while their supply builds. This is a small container of formula or donated breast milk that connects to a thin tube taped alongside the nipple. When the baby latches, they get milk from the breast and the tube simultaneously.
The benefit is twofold: the baby receives adequate nutrition at every feeding, and the sucking continues to stimulate the breast. This avoids the frustration cycle where a hungry baby fusses at a breast that isn’t yet producing enough, which can lead to giving up on the process entirely. As your supply increases, you gradually reduce the amount of supplement in the container.
Realistic Expectations for Supply
Full milk production is not the typical outcome of induced lactation. Most people produce a partial supply that covers some of the baby’s needs, with the rest supplemented by formula or donor milk. How much you produce depends on several factors: how long you spent in the hormonal preparation phase, how consistently you pump, your individual biology, and whether you use galactagogues.
People who follow a full six-month protocol with both hormonal preparation and consistent pumping tend to produce more than those who start the process with less lead time. The Newman-Goldfarb protocol also includes an “accelerated” version for people who don’t have six months to prepare, though results are generally more modest. Even a partial supply has value: the baby receives immune factors and other biological benefits from any amount of human milk, and the act of nursing provides bonding regardless of volume.
Working with a lactation consultant who has experience with induced lactation can make a significant difference. They can help troubleshoot supply issues, adjust pumping schedules, fit a supplemental nursing system, and provide the kind of ongoing support that keeps the process sustainable over weeks and months.