BioGaia Protectis Baby Drops with Vitamin D Review 2026: Review
Checks out. — Legitimate
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"Reduces crying and fussing in colicky infants"
Multiple RCTs confirm DSM 17938 cuts daily crying time in breastfed colicky infants. Effect is real but smaller in formula-fed babies.
PubMed: Savino et al. 2010, Pediatrics (L. reuteri DSM 17938 RCT) -
"Long-term gut health benefit beyond infancy"
Children given DSM 17938 in infancy had dramatically lower functional abdominal pain rates at age 10 in one follow-up study.
PubMed: Lactobacillus reuteri DSM 17938 long-term follow-up study -
"Safe from the 1st day of life"
DSM 17938 has a strong pediatric safety record across dozens of trials. No serious adverse events attributed to the strain in published literature.
PubMed: Lactobacillus reuteri DSM 17938 safety review, Szajewska et al. -
"Vitamin D dose per serving"
The product page never states the IU of Vitamin D per serving. Infants need 400 IU/day per AAP guidelines — verify the physical label.
Consumer advice
If your infant has colic — especially if breastfed — this is one of the few probiotic products with actual clinical trial data behind it. The strain matters: L. reuteri DSM 17938 is not interchangeable with generic "L. reuteri" products. Check that any alternative you consider lists the same strain designation. The Vitamin D addition is a genuine bonus since the AAP recommends 400 IU/day for breastfed infants and most don't get enough from breast milk alone. Buy from a retailer with good turnover (Amazon, Target, Walmart) to ensure viability. Store at room temperature as directed — don't refrigerate or add to hot liquids.
Claims vs Evidence
MODEST6 claims assessed. These grades assess the marketing claims, not the whole product. See each explanation for the evidence and its limits.
"Clinically shown to reduce crying and fussing in colicky infants"
Supported
Multiple RCTs confirm reduced crying in breastfed colicky infants
Based on: Limosilactobacillus reuteri DSM 17938
"Shown to significantly increase frequency of poops in infants with occasional constipation"
Partial
Some trial evidence, but effect size is modest
Based on: Limosilactobacillus reuteri DSM 17938
"Safe and gentle solution to soothe digestive upsets including colic, spit-ups, diarrhea and constipation"
Partial
Colic evidence is strong; spit-up and diarrhea evidence is weaker
Based on: Limosilactobacillus reuteri DSM 17938
"Vitamin D contributes to normal immune function and bone development in children"
Supported
Well-established; Vitamin D deficiency is common in breastfed infants
Based on: Vitamin D
"Probiotics naturally found in breast milk"
Supported
L. reuteri is naturally present in human breast milk
Based on: Limosilactobacillus reuteri DSM 17938
"#1 researched probiotic for colic in the world"
Partial
DSM 17938 is among the most studied infant strains; claim is plausible but unverified
Based on: Limosilactobacillus reuteri DSM 17938
3 supported · 3 partial
Ingredients
Based on peer-reviewed research from PubMed and Examine.com
Why the chain breaks for this product
Most ingredients below have real research behind them. The problem isn't the ingredients — it's the doses. 3 of 4 are not disclosed on the label, so the product can claim the benefits without delivering the chain that gets you there.
Limosilactobacillus reuteri DSM 17938
Probiotic bacteria with clinical evidence for infant colic, gum disease, and gut health in children.
Research-backed dose: 1×10⁹ CFU/day based on clinical study data
In this product: 100 million CFU
Common vegetable oil used in food and supplements, mostly as a carrier or placebo in clinical research.
Fat-soluble antioxidant vitamin. Limited evidence from these studies for most popular supplement claims.
Research-backed dose: 100-400 IU daily (therapeutic range for adults; infant needs are much lower)
In this product: Dose not disclosed
Vitamin D
Essential fat-soluble vitamin. Supports bone health, immune function, and may improve exercise tolerance in deficient individuals.
Research-backed dose: 400–80,000 IU daily depending on condition and deficiency status
In this product: Dose not disclosed
Safety & side effects
What NIH says about the ingredients in this product. This describes the ingredients, not tests of this product, and it is not medical advice. Ask a doctor or pharmacist first if you take medication, are pregnant or nursing, or have a health condition.
Vitamin D
Vitamin D toxicity is almost always caused by excessive supplement intake. It can raise blood calcium and, in extreme cases, lead to kidney failure and death. The adult upper limit is 100 mcg (4,000 IU) a day.
Possible side effects
- High blood calcium from vitamin D toxicity can lead to nausea, vomiting, muscle weakness, and other symptoms.
Serious risks
- Toxicity can cause high blood and urine calcium. In extreme cases it may lead to kidney failure, soft tissue calcification, heart rhythm problems, and death.
- Toxicity is almost always caused by taking too much vitamin D through supplements.
Avoid or ask a doctor first if
- The source says people on regular medications should talk with their health care providers about vitamin D intake and status.
Medication interactions
- Vitamin D supplements may interact with orlistat, statins, steroids, and thiazide diuretics.
- Taking calcium supplements with vitamin D supplements may raise the risk of certain adverse effects.
Upper limit: 100 mcg a day for adults 19+.
Source: NIH Office of Dietary Supplements, Vitamin D: Fact Sheet for Health Professionals
Price & Value
ModerateBioGaia Protectis Baby Drops with Vitamin D
$32.99
Gerber Soothe Probiotic Drops (also contains L. reuteri)
~$28 for similar quantity at major retailers
What you're actually paying for
This is a multi-ingredient blend at ~$1.10/day a serving. Comparable options: Gerber Soothe Probiotic Drops (~$28), Culturelle Baby Calm + Comfort (~$25) — though neither uses the exact same strain with the same depth of research..
Worth paying for
- Clinically shown to reduce crying and fussing in colicky infants
- Shown to significantly increase frequency of poops in infants with occasional constipation
- Safe and gentle solution to soothe digestive upsets including colic, spit-ups, diarrhea and constipation
- Vitamin D contributes to normal immune function and bone development in children
- Probiotics naturally found in breast milk
- #1 researched probiotic for colic in the world
Research sources: PubMed · Examine.com
Analyzed product: https://biogaia.com/products/protectis-baby-drops-vitamin-d
Analysis generated: 2026-06-02 · Engine v1.0.0
Frequently Asked Questions
Is BioGaia Protectis Baby Drops with Vitamin D worth the money?
BioGaia Protectis Baby Drops with Vitamin D at $32.99 appears to offer reasonable value based on its ingredient quality and dosing. BioGaia Protectis Baby Drops is one of the most clinically studied infant probiotic products on the market. The specific strain — L. reuteri DSM 17938 — has genuine randomized controlled trial evidence for reducing colic crying time in infants, which is more than most probiotic supplements can say. The claims are appropriately hedged, the ingredient list is transpar
Is BioGaia Protectis Baby Drops with Vitamin D a scam?
BioGaia Protectis Baby Drops with Vitamin D does not appear to be a scam. Our analysis found the claims are generally supported by the ingredients.
What are the ingredients in BioGaia Protectis Baby Drops with Vitamin D?
BioGaia Protectis Baby Drops with Vitamin D contains 4 ingredients including Limosilactobacillus reuteri DSM 17938, Sunflower oil, Vitamin E, Vitamin D.
Does BioGaia Protectis Baby Drops with Vitamin D actually work?
Yes, BioGaia Protectis Baby Drops with Vitamin D can work for its intended purpose. 3 of 6 claims are fully supported. 3 are partially supported.
Are there cheaper alternatives to BioGaia Protectis Baby Drops with Vitamin D?
Yes, Gerber Soothe Probiotic Drops (also contains L. reuteri) at ~$28 for similar quantity at major retailers offers similar benefits at a better price point. Many key ingredients in BioGaia Protectis Baby Drops with Vitamin D are available separately for less.
Does BioGaia Protectis Baby Drops with Vitamin D have side effects?
NIH summaries of the ingredients in BioGaia Protectis Baby Drops with Vitamin D note these possible effects. Vitamin D: High blood calcium from vitamin D toxicity can lead to nausea, vomiting, muscle weakness, and other symptoms. This describes the ingredients, not tests of this product; ask a doctor or pharmacist.