Yogurt Starter Formula 1 Ingredients & Drug Interactions
What is this page for?
First and foremost: checking Yogurt Starter Formula 1 against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.
Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy
Yogurt Starter Formula 1 is a dietary supplement by Custom Probiotics with 3 active ingredients. Its ingredients are commonly taken for digestive health and balance, diarrhea (including antibiotic-related), vaginal yeast and bacterial infections.Based on those ingredients, 182 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are L. acidophilus, L. bulgaricus. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Yogurt Starter Formula 1 by Custom Probiotics
Ask about any prescription or over-the-counter medication and we check it for interactions with Yogurt Starter Formula 1 by Custom Probiotics — and tell you which ingredient is responsible.
AI summaries are generated from our interaction database for education only — always confirm with your pharmacist. How we use AI
Ask the Pharmacist
A licensed pharmacist will answer your question by email — free, usually within 24 hours.
Got it — thank you!
A licensed pharmacist will answer within 24 hours. Keep an eye on your email (worth checking spam, just in case).
HelloPharmacist Scorecard of Yogurt Starter Formula 1 by Custom Probiotics
Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.
What’s inside
Low disclosure
This powder contains 3 active probiotic ingredients: Lactobacillus acidophilus, Streptococcus thermophilus, and Lactobacillus bulgaricus (also known as Lactobacillus delbrueckii). These are live, beneficial bacteria meant to support digestive health.
The product contains no inactive fillers or other ingredients listed.
Does it work?
Moderate evidence
L. acidophilus is possibly effective for irritable bowel syndrome (IBS), Helicobacter pylori infection, antibiotic-associated diarrhea, and bacterial vaginosis, though the evidence is not conclusive. S. thermophilus and L. bulgaricus don't have established effectiveness ratings in the data we hold — the evidence for their use isn't yet reliable enough to rate.
If you're using this product for a specific condition, talk with your doctor about whether the evidence supports it for your situation.
How safe is it?
Well-documented data
L. acidophilus is generally well tolerated in healthy adults and children, though live probiotic preparations do carry a theoretical risk of infection in some patients — particularly those with weakened immune systems or serious illness. Gastrointestinal side effects like bloating, gas, abdominal pain, and diarrhea can occur but are uncommon.
S. thermophilus and L. bulgaricus are generally well tolerated in healthy people, but both warrant caution in people who are very ill or have weakened immune systems. Pregnancy safety is rated as possibly safe for L. acidophilus and S. thermophilus, though supplement safety data are limited — talk with your doctor before taking this during pregnancy.
Meds to double-check
Moderate interaction found
Antibiotic drugs are the main concern — they can kill the live organisms in this product and reduce its benefit. Separate your antibiotic dose from this product by several hours, and ask your doctor or pharmacist for specific timing guidance.
The bottom line
Scorecard at a glanceFormula with limited ingredient disclosure with some supporting evidence behind its ingredients' uses. Moderate medication interactions have been identified, and safety information is well characterized.
This starter formula may be worth considering if you're making yogurt at home and want to support digestive health with live cultures. If you take antibiotics, time them separately from this product — ask your doctor or pharmacist for the best spacing.
People with weakened immunity or serious illness should check with their doctor first, and anyone taking medications should verify their prescriptions below before starting.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 3 of 3 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Sep 21, 2018.
This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed
General information
Key facts about Yogurt Starter Formula 1, straight from the product label.
| Brand | Custom Probiotics |
|---|---|
| Net contents | 0 Not Present |
| Market status | On market |
| Date entered into DSLD | Sep 21, 2018 |
| DSLD ID | 181246 |
| Product type | Non-nutrient/non-botanical |
| Supplement form | Powder |
| Dietary claims / uses | All Other |
| Intended target group(s) | Adult (18 - 50 Years), Gluten Free, Dairy Free, Sugar Free |
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.
Supplement Facts
The label details for Yogurt Starter Formula 1 by Custom Probiotics, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| L. acidophilus | 0 NP | -- |
| S. thermophilus | 0 NP | -- |
| L. bulgaricus | 0 NP | -- |
Tap any ingredient to jump to its full detail below.
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Suggested/Recommended/Usage/Directions
Directions of use: Add half a scoop (0.4 gram) of yogurt culture, per 2-4 quarts of milk at 100 Deg F (38 Deg. C). Mix thoroughly and ferment for 9 hours or longer. Then refrigerate the yogurt made.
Please read enclosed dosage suggestions or visit www.customprobiotics.com
Storage
Then refrigerate the yogurt made. Keep your yogurt culture in the refrigerator.
Formulation
Does not contain: Artificial colors, flavors, preservatives, sugar, gluten, soy, wheat or FOS.
Dairy Free Probiotic Powder
General Statements
Ultra Potency
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Yogurt Starter Formula 1 by Custom Probiotics label
The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.
Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.
View the full label (PDF)The Ingredients in Yogurt Starter Formula 1 by Custom Probiotics
These are the 3 active ingredients this product is made of. Select any to open its full monograph.
Serving size0.4 Gram(s) Dosage formPowder Amounts shown are per serving.
Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.
L. acidophilus
Interacts with182 drugs
Lactobacillus acidophilus is a 'friendly' bacterium used as a probiotic to support gut and vaginal health. It is generally well tolerated in healthy p...
L. acidophilus monograph & interactionsS. thermophilus
No knowninteractions
Streptococcus thermophilus is a friendly bacterium used as a probiotic, often combined with other strains in yogurt and supplements. It is generally w...
S. thermophilus monograph & interactionsL. bulgaricus
Interacts with182 drugs
Lactobacillus delbrueckii is a 'friendly' bacterium used in food fermentation and sold as a probiotic, often as part of multi-strain products. It is g...
L. bulgaricus monograph & interactionsYogurt Starter Formula 1 by Custom Probiotics Drug Interactions
HelloPharmacist Interaction Report
Yogurt Starter Formula 1 from Custom Probiotics contains live probiotic organisms that interact with antibiotic drugs through its L. acidophilus and L. bulgaricus content.
Antibiotics can kill a significant number of the live organisms in the product, which may decrease its effectiveness. The interaction is Moderate in severity.
Read the full breakdown — every affected drug type, severity by severity
To manage this, separate when you take antibiotics and this product. Your doctor or pharmacist can advise you on the right timing — spacing them out a few hours apart often helps preserve the benefit of both.
S. thermophilus, the third ingredient, has no documented interactions with medications. Use the medication checker below to verify your exact prescriptions against the full list before you start.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Yogurt Starter Formula 1?
Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.
Go to the checkerIngredients driving the most interactions
Individual Drug Interactions
The ingredients in Yogurt Starter Formula 1 interact with 182 drugs. Click any drug to see the details.
2 of the 3 ingredients in Yogurt Starter Formula 1 interact with drugs. Each result below shows which ingredient is responsible. L. acidophilus L. bulgaricus
RifaximinXifaxan
How Rifaximin interacts with Yogurt Starter Formula 1 — through 2 ingredients. Tap an ingredient for the detail:
L. BulgaricusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus delbrueckii with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Bulgaricus + Rifaximin interactionL. AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Acidophilus + Rifaximin interactionSecnidazoleSolosec
How Secnidazole interacts with Yogurt Starter Formula 1 — through 2 ingredients. Tap an ingredient for the detail:
L. AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Acidophilus + Secnidazole interactionL. BulgaricusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus delbrueckii with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Bulgaricus + Secnidazole interactionSparfloxacinZagam
How Sparfloxacin interacts with Yogurt Starter Formula 1 — through 2 ingredients. Tap an ingredient for the detail:
L. BulgaricusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus delbrueckii with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Bulgaricus + Sparfloxacin interactionL. AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Acidophilus + Sparfloxacin interactionSpectinomycinTrobicin
How Spectinomycin interacts with Yogurt Starter Formula 1 — through 2 ingredients. Tap an ingredient for the detail:
L. AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Acidophilus + Spectinomycin interactionL. BulgaricusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus delbrueckii with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Bulgaricus + Spectinomycin interactionStreptomycinStreptomycin
How Streptomycin interacts with Yogurt Starter Formula 1 — through 2 ingredients. Tap an ingredient for the detail:
L. BulgaricusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus delbrueckii with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Bulgaricus + Streptomycin interactionL. AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Acidophilus + Streptomycin interactionSulbactam, DurlobactamXacduro
How Sulbactam, Durlobactam interacts with Yogurt Starter Formula 1 — through 2 ingredients. Tap an ingredient for the detail:
L. AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Acidophilus + Sulbactam, Durlobactam interactionL. BulgaricusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus delbrueckii with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Bulgaricus + Sulbactam, Durlobactam interactionSulfadiazineSulfadiazine
How Sulfadiazine interacts with Yogurt Starter Formula 1 — through 2 ingredients. Tap an ingredient for the detail:
L. BulgaricusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus delbrueckii with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Bulgaricus + Sulfadiazine interactionL. AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Acidophilus + Sulfadiazine interactionSulfadiazine, Sulfamerazine, SulfamethazineTerfonyl, Triple Sulfoid
How Sulfadiazine, Sulfamerazine, Sulfamethazine interacts with Yogurt Starter Formula 1 — through 2 ingredients. Tap an ingredient for the detail:
L. AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Acidophilus + Sulfadiazine, Sulfamerazine, Sulfamethazine interactionL. BulgaricusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus delbrueckii with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Bulgaricus + Sulfadiazine, Sulfamerazine, Sulfamethazine interactionSulfadiazine, TrimethoprimCoptin
How Sulfadiazine, Trimethoprim interacts with Yogurt Starter Formula 1 — through 2 ingredients. Tap an ingredient for the detail:
L. BulgaricusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus delbrueckii with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Bulgaricus + Sulfadiazine, Trimethoprim interactionL. AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Acidophilus + Sulfadiazine, Trimethoprim interactionSulfamerazine, SulfamethazineNeotrizine
How Sulfamerazine, Sulfamethazine interacts with Yogurt Starter Formula 1 — through 2 ingredients. Tap an ingredient for the detail:
L. AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Acidophilus + Sulfamerazine, Sulfamethazine interactionL. BulgaricusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus delbrueckii with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Bulgaricus + Sulfamerazine, Sulfamethazine interactionSulfamethazoleProklar
How Sulfamethazole interacts with Yogurt Starter Formula 1 — through 2 ingredients. Tap an ingredient for the detail:
L. BulgaricusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus delbrueckii with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Bulgaricus + Sulfamethazole interactionL. AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Acidophilus + Sulfamethazole interactionSulfamethizoleThiosulfil Forte
How Sulfamethizole interacts with Yogurt Starter Formula 1 — through 2 ingredients. Tap an ingredient for the detail:
L. AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Acidophilus + Sulfamethizole interactionL. BulgaricusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus delbrueckii with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Bulgaricus + Sulfamethizole interactionSulfamethoxazoleGantanol
How Sulfamethoxazole interacts with Yogurt Starter Formula 1 — through 2 ingredients. Tap an ingredient for the detail:
L. BulgaricusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus delbrueckii with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Bulgaricus + Sulfamethoxazole interactionL. AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Acidophilus + Sulfamethoxazole interactionSulfamethoxazole, TrimethoprimBactrim, Bactrim DS, Bactrim IV, Cotrim, Cotrim DS, Cotrimix +9 more
How Sulfamethoxazole, Trimethoprim interacts with Yogurt Starter Formula 1 — through 2 ingredients. Tap an ingredient for the detail:
L. AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Acidophilus + Sulfamethoxazole, Trimethoprim interactionL. BulgaricusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus delbrueckii with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Bulgaricus + Sulfamethoxazole, Trimethoprim interactionSulfapyridineSulfapyridine
How Sulfapyridine interacts with Yogurt Starter Formula 1 — through 2 ingredients. Tap an ingredient for the detail:
L. AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Acidophilus + Sulfapyridine interactionL. BulgaricusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus delbrueckii with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Bulgaricus + Sulfapyridine interactionSulfisoxazoleGantrisin
How Sulfisoxazole interacts with Yogurt Starter Formula 1 — through 2 ingredients. Tap an ingredient for the detail:
L. BulgaricusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus delbrueckii with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Bulgaricus + Sulfisoxazole interactionL. AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Acidophilus + Sulfisoxazole interactionTedizolid PhosphateSivextro
How Tedizolid Phosphate interacts with Yogurt Starter Formula 1 — through 2 ingredients. Tap an ingredient for the detail:
L. AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Acidophilus + Tedizolid Phosphate interactionL. BulgaricusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus delbrueckii with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Bulgaricus + Tedizolid Phosphate interactionTelavancinVibativ
How Telavancin interacts with Yogurt Starter Formula 1 — through 2 ingredients. Tap an ingredient for the detail:
L. BulgaricusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus delbrueckii with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Bulgaricus + Telavancin interactionL. AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Acidophilus + Telavancin interactionTelithromycinKetek
How Telithromycin interacts with Yogurt Starter Formula 1 — through 2 ingredients. Tap an ingredient for the detail:
L. AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Acidophilus + Telithromycin interactionL. BulgaricusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus delbrueckii with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Bulgaricus + Telithromycin interactionTemafloxacinOmniflox
How Temafloxacin interacts with Yogurt Starter Formula 1 — through 2 ingredients. Tap an ingredient for the detail:
L. BulgaricusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus delbrueckii with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Bulgaricus + Temafloxacin interactionL. AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Acidophilus + Temafloxacin interactionTetracyclineAchromycin, Achromycin V, Nor-Tet, Robitet, Sumycin, Sumycin 250 +6 more
How Tetracycline interacts with Yogurt Starter Formula 1 — through 2 ingredients. Tap an ingredient for the detail:
L. AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Acidophilus + Tetracycline interactionL. BulgaricusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus delbrueckii with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Bulgaricus + Tetracycline interactionTicarcillinTicar
How Ticarcillin interacts with Yogurt Starter Formula 1 — through 2 ingredients. Tap an ingredient for the detail:
L. BulgaricusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus delbrueckii with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Bulgaricus + Ticarcillin interactionL. AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Acidophilus + Ticarcillin interactionTicarcillin , ClavulanateTimentin
How Ticarcillin , Clavulanate interacts with Yogurt Starter Formula 1 — through 2 ingredients. Tap an ingredient for the detail:
L. AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Acidophilus + Ticarcillin , Clavulanate interactionL. BulgaricusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus delbrueckii with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Bulgaricus + Ticarcillin , Clavulanate interactionTigecyclineTygacil
How Tigecycline interacts with Yogurt Starter Formula 1 — through 2 ingredients. Tap an ingredient for the detail:
L. BulgaricusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus delbrueckii with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Bulgaricus + Tigecycline interactionL. AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Acidophilus + Tigecycline interactionTobramycinBethkis, Kitabis PAK, Nebcin, Tobi Podhaler
How Tobramycin interacts with Yogurt Starter Formula 1 — through 2 ingredients. Tap an ingredient for the detail:
L. AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Acidophilus + Tobramycin interactionL. BulgaricusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus delbrueckii with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Bulgaricus + Tobramycin interactionTrimethoprimProloprim, Trimpex
How Trimethoprim interacts with Yogurt Starter Formula 1 — through 2 ingredients. Tap an ingredient for the detail:
L. BulgaricusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus delbrueckii with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Bulgaricus + Trimethoprim interactionL. AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Acidophilus + Trimethoprim interactionTroleandomycinTao
How Troleandomycin interacts with Yogurt Starter Formula 1 — through 2 ingredients. Tap an ingredient for the detail:
L. AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Acidophilus + Troleandomycin interactionL. BulgaricusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus delbrueckii with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Bulgaricus + Troleandomycin interactionTrovafloxacinTrovan, Trovan Injection
How Trovafloxacin interacts with Yogurt Starter Formula 1 — through 2 ingredients. Tap an ingredient for the detail:
L. BulgaricusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus delbrueckii with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Bulgaricus + Trovafloxacin interactionL. AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Acidophilus + Trovafloxacin interactionVancomycinVancocin, Vancoled
How Vancomycin interacts with Yogurt Starter Formula 1 — through 2 ingredients. Tap an ingredient for the detail:
L. AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Acidophilus + Vancomycin interactionL. BulgaricusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus delbrueckii with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Bulgaricus + Vancomycin interactionVancomycin HydrochlorideFirvanq
How Vancomycin Hydrochloride interacts with Yogurt Starter Formula 1 — through 2 ingredients. Tap an ingredient for the detail:
L. BulgaricusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus delbrueckii with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Bulgaricus + Vancomycin Hydrochloride interactionL. AcidophilusAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L.
Read the full L. Acidophilus + Vancomycin Hydrochloride interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Yogurt Starter Formula 1 with known interactions, here are the types of medications they can affect. Open any type for the detail — or search your exact drug in the checker above.
L. acidophilus
Antibiotic Drugs
Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L. acidophilus.
L. acidophilus preparations usually contain live and active organisms. Therefore, simultaneously taking antibiotics might kill a significant number of the organisms. Tell patients to separate administration of antibiotics and L. acidophilus preparations by at least two hours.
L. bulgaricus
Antibiotic Drugs
Theoretically, taking Lactobacillus delbrueckii with antibiotic drugs might decrease the effectiveness of L. delbrueckii.
Lactobacillus delbrueckii preparations usually contain live and active organisms. Therefore, simultaneously taking antibiotics might kill a significant number of the organisms. Tell patients to separate administration of antibiotics and L. delbrueckii preparations by at least two hours.
Brand information
Manufacturer and brand details for Yogurt Starter Formula 1, from the product label.
Custom Probiotics
See all Custom Probiotics products- Name
- Custom Probiotics, Inc.
- City
- Glendale
- State
- California
- ZipCode
- 91214
- Phone Number
- (800) 219-8405
- Web Address
- www.customprobiotics.com
Yogurt Starter Formula 1 by Custom Probiotics: Common Questions
Does Yogurt Starter Formula 1 by Custom Probiotics interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
I take antibiotics. Can I use this product at the same time?
Is this safe during pregnancy?
Can this product cause side effects?
Does L. acidophilus really work for IBS?
What do these bacteria do in yogurt?
Should I worry about infection from live bacteria?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Yogurt Starter Formula 1 is safe with your meds?
Our pharmacists answer your medication & supplement questions — free.
Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.
The Full Monographs Behind Yogurt Starter Formula 1’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Lactobacillus Acidophilus
Interacts with 182 drugsLactobacillus acidophilus is a 'friendly' bacterium used as a probiotic to support gut and vaginal health. It is generally well tolerated in healthy people, and there is reasonable evidence...
Read the full Lactobacillus Acidophilus monograph → Herb & supplement monographStreptococcus Thermophilus
Streptococcus thermophilus is a friendly bacterium used as a probiotic, often combined with other strains in yogurt and supplements. It is generally well tolerated in healthy people and may...
Read the full Streptococcus Thermophilus monograph → Herb & supplement monographLactobacillus Delbrueckii
Interacts with 182 drugsLactobacillus delbrueckii is a 'friendly' bacterium used in food fermentation and sold as a probiotic, often as part of multi-strain products. It is generally considered safe for healthy peo...
Read the full Lactobacillus Delbrueckii monograph →Sources & How We Checked
Yogurt Starter Formula 1's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.
- NIH Dietary Supplement Label Database (DSLD) — The official product label on file for this supplement.
- Natural Medicines (Therapeutic Research Center) — Evidence-graded clinical reference behind the ingredient interaction data.
Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.
The 45 references behind this product’s interaction data
Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.
Lactobacillus Acidophilus 15 references
- Pierce A. The American Pharmaceutical Association Practical Guide to Natural Medicines. New York: The Stonesong Press, 1999:19.
- Begtrup LM, de Muckadell OB, Kjeldsen J, Christensen RD, Jarbøl DE. Long-term treatment with probiotics in primary care patients with irritable bowel syndrome--a randomised, double-blind, placebo controlled trial. Scand J Gastroenterol 2013;48(10):1127-35 PubMed
- Chatterjee S, Kar P, Das T, Ray S, Gangulyt S, Rajendiran C, Mitra M. Randomised placebo-controlled double blind multicentric trial on efficacy and safety of Lactobacillus acidophilus LA-5 and Bifidobacterium BB-12 for prevention of antibiotic-associated
- Shavakhi A, Tabesh E, Yaghoutkar A, Hashemi H, Tabesh F, Khodadoostan M,Minakari M, Shavakhi S, Gholamrezaei A. The effects of multistrain probiotic compound on bismuth-containing quadruple therapy for Helicobacter pylori infection: a randomized placebo-c
- Karamali M, Dadkhah F, Sadrkhanlou M, et al. Effects of probiotic supplementation on glycaemic control and lipid profiles in gestational diabetes: a randomized, double-blind, placebo-controlled trial. Diabetes Metab 2016;42(4):234-41. PubMed
- Badehnoosh B, Karamali M, Zarrati M, et al. The effects of probiotic supplementation on biomarkers of inflammation, oxidative stress and pregnancy outcomes in gestational diabetes. J Matern Fetal Neonatal Med. 2018 May;31(9):1128-1136.
- Kumar S, Kumar R, Rohilla L, Jacob N, Yadav J, Sachdeva N. A high potency multi-strain probiotic improves glycemic control in children with new-onset type 1 diabetes mellitus: A randomized, double-blind, and placebo-controlled pilot study. Pediatr Diabete
- Shahriari A, Karimi E, Shahriari M, Aslani N, Khooshideh M, Arab A. The effect of probiotic supplementation on the risk of gestational diabetes mellitus among high-risk pregnant women: A parallel double-blind, randomized, placebo-controlled clinical trial PubMed
- Xiao SD, Zhang DZ, Lu H, et al. Multicenter, randomized, controlled trial of heat-killed Lactobacillus acidophilus LB in patients with chronic diarrhea. Adv Ther. 2003;20(5):253-60.
- Rossi F, Amadoro C, Gasperi M, Colavita G. Lactobacilli infection case reports in the last three years and safety implications. Nutrients. 2022;14(6):1178. PubMed
- Ozer M, Goksu SY, Shahverdiani A, Mustafa M. Lactobacillus acidophilus-induced endocarditis and associated splenic abscess. Case Rep Infect Dis 2020;2020:1382709.
- Sadrin S, Sennoune S, Gout B, et al. A 2-strain mixture of Lactobacillus acidophilus in the treatment of irritable bowel syndrome: A placebo-controlled randomized clinical trial. Dig Liver Dis 2020;52(5):534-540. PubMed
- Stoffer JN, Slingsby TJ, Giuliari GP. Lactobacillus acidophilus endophthalmitis after intravitreal bevacizumab injection requiring intraocular lens explantation. Can J Ophthalmol 2022;57(1):e21-e22. PubMed
- Cukovic-Cavka S, Likic R, Francetic I, Rustemovic N, Opacic M, Vucelic B. Lactobacillus acidophilus as a cause of liver abscess in a NOD2/CARD15-positive patient with Crohn's disease. Digestion 2006;73(2-3):107-10.
- Hui J, Ren Y, Wang Y, Han Q. Lactobacillus acidophilus endophthalmitis postcataract operation: A case report with a literature review. Ocul Immunol Inflamm 2023.
See these in context on the Lactobacillus Acidophilus monograph →
Streptococcus Thermophilus 21 references
- Saxelin M, Chuang NH, Chassy B, et al. Lactobacilli and bacteremia in southern Finland 1989-1992. Clin Infect Dis 1996;22:564-6. PubMed
- Tynkkynen S, Singh KV, Varmanen P. Vancomycin resistance factor of Lactobacillus rhamnosus GG in relation to enterococcal vancomycin resistance (van) genes. Int J Food Microbiol 1998;41:195-204. PubMed
- Klein G, Zill E, Schindler R, et al. Peritonitis associated with vancomycin-resistant Lactobacillus rhamnosus in a continuous ambulatory peritoneal dialysis patient; organism identification, antibiotic therapy, and case report. J Clin Microbiol 1998;36:
- Kalima P, Masterton RG, Roddie PH, et al. Lactobacillus rhamnosus infection in a child following bone marrow transplant. J Infect 1996;32:165-7. PubMed
- Goldin BR. Health Benefits of probiotics. Br J Nutr 1998;80:S203-7. DOI
- Rautio M, Jousimies-Somer H, Kauma H, et al. Liver abscess due to Lactobacillus rhamnosus strain indistinguishable from L. rhamnosus strain GG. Clin Infect Dis 1999;28:1159-60.
- MacGregor G, Smith AJ, Thakker B, Kinsella J. Yoghurt biotherapy: contraindicated in immunosuppressed patients? Postgrad Med J 2002;78:366-7. PubMed
- Land MH, Rouster-Stevens K, Woods CR, et al. Lactobacillus sepsis associated with probiotic therapy. Pediatrics 2005;115:178-81.
- De Groote MA, Frank DN, Dowell E, et al. Lactobacillus rhamnosus GG bacteremia associated with probiotic use in a child with short gut syndrome. Pediatr Infect Dis J 2005;24:278-80. PubMed
- Vahabnezhad E, Mochon AB, Wozniak LJ, Ziring DA. Lactobacillus bacteremia associated with probiotic use in a pediatric patient with ulcerative colitis. J Clin Gastroenterol. 2013;47(5):437-9. PubMed
- Dolatkhah N, Hajifaraji M, Abbasalizadeh F, Aghamohammadzadeh N, Mehrabi Y, Abbasi MM. Is there a value for probiotic supplements in gestational diabetes mellitus? A randomized clinical trial. J Health Popul Nutr. 2015;33:25. PubMed
- Pruccoli G, Silvestro E, Pace Napoleone C, Aidala E, Garazzino S, Scolfaro C. Are probiotics safe? Bifidobacterium bacteremia in a child with severe heart failure. Infez Med. 2019;27(2):175-178.
- Sendil S, Shrimanker I, Mansoora Q, Goldman J, Nookala VK. Lactobacillus rhamnosus bacteremia in an immunocompromised renal transplant patient. Cureus. 2020;12(2):e6887. PubMed
- Albarillo FS, Shah U, Joyce C, Slade D. Lactobacillus rhamnosus Infection: A single-center 4-year descriptive analysis. J Glob Infect Dis. 2020;12(3):119-123. PubMed
- Pasala S, Singer L, Arshad T, Roach K. Lactobacillus endocarditis in a healthy patient with probiotic use. IDCases. 2020;22:e00915. PubMed
- Agrawal S, Tuchman ES, Bruce MJ, Theodorou ME. Fatal Lactobacillus endocarditis in a patient with transcatheter aortic valve replacement. BMJ Case Rep. 2020;13(11):e236835.
- Antoun M, Hattab Y, Akhrass FA, Hamilton LD. Uncommon pathogen, Lactobacillus, causing infective endocarditis: Case report and review. Case Rep Infect Dis. 2020;2020:8833948. PubMed
- Rossi F, Amadoro C, Gasperi M, Colavita G. Lactobacilli infection case reports in the last three years and safety implications. Nutrients. 2022;14(6):1178. PubMed
- Franko B, Vaillant M, Recule C, Vautrin E, et al. Lactobacillus paracasei endocarditis in a consumer of probiotics. Med Mal Infect. 2013;43(4):171-3. PubMed
- Campbell RE, Miller A, Afroze A. Native valve endocarditis secondary to Lactobacillus paracasei bacteremia. Consultant. 2020;60(9):27-8. DOI
- Kato K, Funabashi N, Takaoka H, et al. Lactobacillus paracasei endocarditis in a consumer of probiotics with advanced and severe bicuspid aortic valve stenosis complicated with diffuse left ventricular mid-layer fibrosis. Int J Cardiol. 2016;224:157-161. PubMed
See these in context on the Streptococcus Thermophilus monograph →
Lactobacillus Delbrueckii 9 references
- Pierce A. The American Pharmaceutical Association Practical Guide to Natural Medicines. New York: The Stonesong Press, 1999:19.
- Rossi F, Amadoro C, Gasperi M, Colavita G. Lactobacilli infection case reports in the last three years and safety implications. Nutrients. 2022;14(6):1178. PubMed
- Ranchal P, Gupta R, Goldberg R, A Lobo S, Pascual A, El Khoury MY. Penicillin-sensitive Lactobacillus jensenii bacteremia. Am J Ther 2021;28(2):e250-e252. PubMed
- Grazioli-Gauthier L, Rigamonti E, Leo LA, Martinetti Lucchini G, Lo Priore E, Bernasconi E. Lactobacillus jensenii mitral valve endocarditis: Case report, literature review and new perspectives. IDCases 2022;27:e01401. PubMed
- Toprak NU, Bozan T, Yilmaz S, Buyukbayrak EE, Tigen ET. Polymicrobial bacteremia due to Lactobacillus jensenii and Veillonella montpellierensis in a pregnant patient; case report and review of literature. Anaerobe 2022;75:102576. PubMed
- Chazan B, Raz R, Shental Y, Sprecher H, Colodner R. Bacteremia and pyelonephritis caused by Lactobacillus jensenii in a patient with urolithiasis. Isr Med Assoc J 2008;10(2):164-5.
- Neonakis IK, Skamagkas I, Stafylaki D, Maraki S. Lactobacillus delbrueckii urinary tract infection in a male patient: a case report. Germs 2022;12(2):304-307. PubMed
- Maillet F, Passeron A, Podglajen I, Ranque B, Pouchot J. Lactobacillus delbrueckii urinary tract infection in a male patient. Med Mal Infect 2019;49(3):226-228. PubMed
- Darbro BW, Petroelje BK, Doern GV. Lactobacillus delbrueckii as the cause of urinary tract infection. J Clin Microbiol 2009;47(1):275-7.
See these in context on the Lactobacillus Delbrueckii monograph →
Parts of this content are provided by the Therapeutic Research Center, LLC.
DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.
© 2021 Therapeutic Research Center, LLC