Bloom greens powders have not been studied for safety during breastfeeding, and the brand does not market its products as safe for nursing mothers. Most of Bloom’s product line contains adaptogens, herbal extracts, and other ingredients that lack sufficient safety data for breastfeeding women. Until that data exists, caution is warranted.
Why Bloom Raises Concerns for Nursing Mothers
Bloom’s greens powders contain more than just fruits and vegetables. Depending on the formula, you’ll find ingredients like ashwagandha, rhodiola, milk thistle, and various botanical extracts. These compounds pass into breast milk in unknown quantities, and their effects on infants haven’t been tested.
The core issue isn’t that these ingredients are known to be harmful. It’s that no one has done the work to confirm they’re safe. The InfantRisk Center, a leading research organization on medications and supplements during breastfeeding, has described the problem bluntly: for herbs like ashwagandha, the trail of cited evidence loops in circles without ever arriving at solid clinical data. Researchers have read hundreds of pages of literature on individual herbs only to find that referenced safety claims trace back to other unsupported claims. The data either doesn’t exist or hasn’t surfaced.
Ashwagandha and Other Adaptogens
Ashwagandha is one of the most prominent ingredients in Bloom’s formulas and one of the biggest concerns for breastfeeding mothers. It’s classified as an adaptogen, meaning it’s supposed to help the body manage stress. But adaptogens work by influencing hormone pathways, and any substance that affects your hormones could theoretically affect milk production or your baby’s developing endocrine system.
No clinical trials have tested ashwagandha in breastfeeding women. There’s no established safe dose for nursing mothers, and no data on how much transfers into breast milk. The same gap applies to rhodiola and several other herbal extracts in Bloom’s blends. Most lactation resources list these herbs as “insufficient data” rather than “safe” or “unsafe,” which means you’re operating without a safety net.
The Supplement Regulation Problem
Greens powders like Bloom are classified as dietary supplements, not food or medicine. That distinction matters. Supplement manufacturers don’t need to prove their products are safe before selling them. They’re not required to test for contaminants like heavy metals, pesticide residues, or bacterial contamination to any specific standard, though some companies voluntarily pursue third-party testing.
Bloom does not carry NSF Certified for Sport or Informed Choice certification, which are the most rigorous third-party testing programs available. The brand states it tests its products, but independent verification through recognized certification bodies provides a higher level of assurance, particularly for vulnerable populations like breastfeeding mothers and their infants. Greens powders as a category have drawn scrutiny for containing trace amounts of lead and other heavy metals, which concentrate in leafy greens and can transfer into breast milk.
What’s Actually in Bloom’s Products
Bloom offers several product lines, and the ingredient lists vary. The original Bloom Greens contains a blend of fruit and vegetable powders, digestive enzymes, probiotics, and adaptogenic herbs. Some versions include added caffeine or green tea extract, which is another consideration during breastfeeding since caffeine does pass into breast milk. Most lactation experts recommend keeping caffeine intake under 300 mg per day while nursing.
Proprietary blends create an additional layer of uncertainty. When a label lists a “superfood blend” or “adaptogen blend” with a combined weight, you can’t tell how much of each individual ingredient you’re getting. This makes it impossible to assess whether any single herb is present at a dose that could be problematic.
Safer Ways to Get Greens While Nursing
If you’re drawn to Bloom because you want more nutrients in your diet, whole foods are the straightforward alternative. Spinach, kale, broccoli, and other leafy greens provide the same vitamins and minerals without the unknowns of herbal extracts. A simple smoothie with frozen greens, fruit, and yogurt delivers fiber and probiotics that a powder can’t fully replicate.
If you prefer a supplement, look for products that contain only vitamins, minerals, and food-based ingredients without adaptogens or herbal extracts. Products carrying NSF or USP verification have been independently tested for both purity and label accuracy. A prenatal or postnatal multivitamin designed for breastfeeding mothers is formulated with this specific life stage in mind, which no greens powder is.
The Bottom Line on Bloom and Breastfeeding
The honest answer is that nobody knows whether Bloom is safe during breastfeeding because the necessary studies haven’t been done. The individual herbal ingredients lack clinical safety data for nursing mothers, the long-term effects on infants are unstudied, and the product isn’t certified by independent testing organizations that screen for contaminants. That combination of unknowns is why most lactation professionals advise against using herbal supplement blends while breastfeeding. The risk may turn out to be small, but right now there’s no evidence to confirm that.