Verdict: False. 

This is the most common concern parents bring up, and it is based on an outdated understanding of plant protein. Modern plant-based infant formulas are formulated to deliver protein in the same quantity and quality range required by every other infant formula sold legally — regulated by FSANZ (Food Standards Australia New Zealand), the EU infant formula directive, and the FDA.

The official method for assessing infant formula protein quality is PDCAAS (Protein Digestibility-Corrected Amino Acid Score), adopted by the FAO/WHO Expert Consultation as the regulatory standard for protein quality. Plant proteins commonly used in infant formula score within the acceptable range required for infant nutrition. Soy and hydrolyzed rice proteins have been approved and widely used for decades. Newer sources like pea protein are part of a growing body of clinical research backing their use in infant formula.

Sprout Organic Infant Formula delivers protein from a blend of organic fermented pea protein and organic fermented and sprouted rice protein. Together, this combination provides all nine essential amino acids — at the levels required to support healthy infant growth.

For more on why pea and rice together work so well, read our rice protein vs pea protein guide.

Verdict: False - when proteins are combined correctly.

This myth has a kernel of truth, but it falls apart in context.

Looked at individually, most plant proteins are missing or low in one or two essential amino acids. Pea protein is high in lysine but lower in methionine. Rice protein is the opposite — high in methionine, lower in lysine. So on its own, neither one is a "complete" protein in the way dairy is.

But here is the thing: plant proteins are not used individually in well-formulated plant-based infant formula. They are combined. When pea protein and rice protein are blended together, the limiting amino acid in one is supplied by the other. The combined protein profile delivers all nine essential amino acids at the levels infants need.

This is exactly the approach Sprout Organic takes — fermented pea protein plus fermented and sprouted rice protein, blended to create a naturally complete amino acid profile without hydrolysis or supplemental free amino acids. It is the same nutritional principle behind dishes like rice and beans in many traditional cuisines: two incomplete proteins, when paired, become complete.

For families needing an even more processed protein option (like babies with confirmed CMPA), formulas like Bébé M use hydrolyzed rice protein with supplemental free amino acids to achieve the same complete profile. Different approach, same outcome.

Verdict: False — and it's chemically identical to fish-sourced DHA.

DHA (docosahexaenoic acid) is critical for brain and eye development in infants. The myth comes from the assumption that since most conventional formulas use fish oil as the DHA source, plant-based formulas must skip it.

They don't. Plant-based formulas like Sprout Organic include algal DHA — DHA extracted from microalgae (specifically Schizochytrium sp.). Algal DHA is chemically identical to the DHA found in fish oil. The fish do not produce DHA themselves; they get it by eating algae. Algal DHA is, in a sense, the source — fish are the middlemen.

For families avoiding fish-derived ingredients (vegan, fish-allergic, or just preferring cleaner sourcing chains), algal DHA delivers the same brain and eye development benefits as fish-sourced DHA. Several non-vegan formulas have also switched to algal DHA, including Holle Dutch Goat and Kendamil Goat — showing that "plant-based DHA" is no longer just a vegan niche feature.

Verdict: Misleading — context matters enormously. 

This is the most reasonable-sounding concern on the list, because there IS a legitimate basis for caution about arsenic in rice. Rice naturally absorbs trace amounts of inorganic arsenic from soil and water. But the leap from "rice can contain arsenic" to "rice-based infant formula is dangerous" misses critical context about how formula is actually manufactured and regulated.

Here is what is actually true:

Hydrolyzed and purified rice protein in regulated infant formula is processed to dramatically reduce heavy metal content compared to whole grain rice products. Manufacturers actively select rice sources with the lowest arsenic levels and test final products against strict regulatory limits.

The EU has set hard regulatory limits on inorganic arsenic in infant formula: 20 parts per billion (ppb) for powdered formula and 10 ppb for liquid formula. Any formula that exceeds these limits cannot be legally sold in the EU.

Recent independent US testing in 2025 found that no US infant formulas exceeded EU limits for arsenic— and notably, the two formulas with the highest arsenic levels in that testing were both cow milk-based hypoallergenic products, not plant-based ones.

Sprout Organic is validated against FSANZ infant nutrition standards, which include strict limits on contaminants including arsenic. Every batch is tested against these limits.

The arsenic concern is real and worth taking seriously — but it applies to high-volume consumption of unprocessed rice products (like rice cereal eaten three times a day), not regulated infant formula where the protein has been processed, purified, and tested. For a deeper look at heavy metals and other formula contaminants, read our toxic baby formula ingredients guide.

Verdict: False. 

This is one of the most consequential misunderstandings about plant-based formula, because it leads families who genuinely need it to overlook it.

Plant-based formula is used by:

Plant-based formula is an infantnutrition category, not a lifestyle product.

Verdict: False — and the difference matters.

"Plant-based" is a marketing term with no legal definition. A formula can be labeled "plant-based" while still containing animal-derived ingredients — most commonly vitamin D3 sourced from lanolin (sheep's wool) or DHA from fish oil.

Certified vegan is a third-party-verified status meaning zero animal-derived ingredients of any kind — including vitamins and DHA sources. Sprout Organic is certified vegan by Vegan Australia, meaning every single ingredient has been independently verified as free from animal sources.

The practical difference: a "plant-based" formula might use fish-sourced DHA. A certified vegan formula uses algal DHA. A "plant-based" formula might use lanolin-derived vitamin D3. A certified vegan formula uses plant-derived vitamin D2 or a vegan-certified D3 source.

If full animal-free status matters for your family — religious, ethical, allergy-related — look specifically for certified vegan, not just "plant-based" on the label. For the full breakdown on label terms, see our vegan baby formula FAQ Part 2.

Verdict: False — for regulated infant formula.

This myth often gets tangled up with separate (and legitimate) concerns about whole vegan diets in children. Those are not the same thing, and the distinction is critical.

The European Society for Paediatric Gastroenterology, Hepatology and Nutrition (ESPGHAN) published a 2024 position paper noting that evidence on whole vegan diets in children is mixed, and that nutritional planning is essential to prevent deficiencies in B12, iron, vitamin D, calcium, and zinc.

But here is what gets lost in that conversation: vegan infant formula is not the same as a vegan diet. A regulated infant formula — whether dairy-based, goat-based, or plant-based — must by law deliver specific minimum and maximum levels of every essential nutrient: protein, fat, energy, iron, calcium, vitamin D, vitamin B12, zinc, iodine, and the full range of vitamins and minerals required for healthy growth.

Sprout Organic Infant Formula is validated against FSANZ infant formula standards. Every nutrient your baby needs is built into the formulation at clinically validated levels. Your baby will not be deficient in B12 because B12 is fortified into the formula. They will not be deficient in iron because iron is fortified. They will not be missing DHA because algal DHA is included.

The concerns about whole vegan diets apply when babies transition off formula and start eating solid foods — which is where careful nutritional planning becomes important. While your baby is on formula, the formula does the work.

For more on transitioning, see our vegan baby formula FAQ Part 3.

Verdict: False — and often it has fewer additives than dairy formulas.

This myth seems to come from confusion with plant-based "milks" sold for adults (almond milk, oat milk, etc.) — which are NOT infant formula and often do contain added sugars and stabilizers.

Regulated plant-based infant formula is held to the same ingredient standards as any other infant formula. Sprout Organic, for example, contains:

Compare this to many US conventional soy formulas — including Enfamil ProSobee — which DO contain corn syrup solids as the primary carbohydrate. For a detailed comparison, read our Sprout Organic vs Enfamil ProSobee guide.

The "additives" in any infant formula — plant-based or not — are mostly vitamins, minerals, and DHA sources required by regulation to ensure nutritional completeness. These are not optional. Every formula contains them.

Verdict: False — it's regulated as strictly as any other infant formula. 

In the US, EU, and Australia, anything legally sold as "infant formula" must meet specific regulatory requirements for nutritional composition, safety testing, manufacturing standards, and labeling. This applies whether the formula is made from cow milk, goat milk, soy, hydrolyzed rice, or pea+rice protein.

Plant-based formulas that meet these standards are not novelty products. They are nutritionally complete, regulated, tested, and legally certified to be appropriate for infants from birth. For a deeper dive into why parents are choosing plant-based options, see our pillar piece on plant-based baby formula.

Verdict: Outdated — and often the opposite is true.

A decade ago, plant-based infant formula was a fringe option and pediatricians were often unfamiliar with it. That has changed significantly. The clinical evidence has matured, regulatory acceptance has grown, and many pediatricians now actively recommend plant-based formula for specific situations — particularly CMPA, soy sensitivity, and family dietary requirements.

That said, if you suspect your pediatrician is less familiar with current plant-based formula options, here is what helps the conversation:

If your pediatrician strongly opposes plant-based formula without offering a specific medical reason for your baby's case, it is reasonable to ask follow-up questions or seek a second opinion. Your baby's pediatrician should partner with you, not dismiss your concerns.

After clearing out the myths, here is the honest summary:

If you are considering switching, the practical entry points on TMB:

For a head-to-head of Sprout vs Bébé M, see our comparison guide.