Medical disclaimer: GutVerdict summarizes what people say about supplements on Reddit. It is not medical advice, and nothing here is meant to diagnose, treat, cure, or prevent any disease. These statements have not been evaluated by the Food and Drug Administration. Talk to your doctor or pharmacist before starting a supplement, especially if you are pregnant, take medicines, or have a medical condition. New, severe or worsening symptoms (such as blood in the stool, weight loss, fever, or night-time symptoms) need a doctor, not a supplement. Full disclaimer.

Atrantil vs Iberogast (STW 5)

On Reddit, owners rate Iberogast (STW 5) higher overall (3.8 vs 3.8). Scores summarize self-reported experiences and are not evidence that either will work for you.

AtrantilIberogast (STW 5)
Typecapsulesliquid drops
GutVerdict score3.83.8
Owner sentiment3.63.9
Recommendations2.41.9
Tolerability4.74.8
Owner comments181124
Rated comments7951
Unwanted effects reported11%4%
Top praiseBloating & gas, Dose & timingDose & timing, Bloating & gas
Top complaintsSide effects, Urgency & loose stoolsSide effects, Pain & cramping

By symptom

ContextAtrantilIberogast (STW 5)
IBS-C & constipation15 of 17 positive9 of 10 positive
IBS-D & loose stools5 of 7 positive6 of 7 positive
Bloating & gas22 of 27 positive12 of 13 positive
SIBO58 of 76 positive37 of 40 positive
After antibiotics5 of 8 positive4 of 5 positive
Pain & cramping3 of 6 positive5 of 7 positive

What owners say about Atrantil

4/5

“I have heard that some folks in similar situations find a lot of relief by using Atrantil.”

owner comment via r/SIBO · 2026-10-10 · 11 upvotes
3/5 Bloating & gasCost

“Also do you not think maybe he was told not to show the results of atrantil working, so he can create his own molecule that's proprietary and more expensive.”

owner comment via r/SIBO · 2026-03-26 · 2 upvotes
4/5 Pain & cramping

“Was hoping for an actual mechanism since I can’t find any evidence for Atrantil’s marketing claims.”

owner comment via r/SIBO · 2026-03-29 · 2 upvotes

Full Atrantil page →

What owners say about Iberogast (STW 5)

2/5

“We saw tons of specialists, tons of tests, we tried antibiotics and herbals and motility stuff like iberogast.”

owner comment via r/SIBO · 2026-05-26 · 10 upvotes
4/5

“Allison Siebecker's SIBO guidelines, the recommended Iberogast dosage to act as a prokinetic (specifically for the migrating motor complex at night) is **60 drops at bedtime on an empty stomach**...(I think she actually gives it as a range of 30-60)”

owner comment via r/SIBO · 2026-09-29 · 5 upvotes
4/5 Pain & cramping

“(I have a specific diet, never eat outside, can't leave house at certain hours) By taking concerta for my ADHD, accommodating my autism, taking hormones for the PCOS and endometriosis and Iberogast for the IBS and FD.”

owner comment via r/IBS · 2026-04-15 · 1 upvotes

Full Iberogast (STW 5) page →

Talk to a doctor or pharmacist before switching or combining supplements, particularly if you take other medicines.