Botanical Blend

Iberogast (STW 5)

Also known as: STW 5, Nine-herb formula, German digestive formula

Evidence

Nine-herb German formula with strong evidence for functional dyspepsia and IBS symptoms.

Primary uses

Functional dyspepsia
IBS
Bloating
Motility support

How it works

Multiple herbs work synergistically
Prokinetic effects
Antispasmodic
Anti-inflammatory

Dosage

Typical range: 20 drops 3x daily
Timing: Before or with meals
With food: Before or with meals
Duration: As needed or ongoing
Special populations: Functional dyspepsia, IBS, motility issues

Forms

Liquid drops
As directed

Safety

Common side effects

Rare: allergic reactions
GI upset

Contraindications

Allergy to components
Liver disease

Evidence notes

Strong clinical evidence from multiple trials

Grade A: Multiple well-designed human trials support the main claims.

Related in Botanical Blend

Check a full stack

Formulate's free interaction checker lets you paste in any combination of supplements and medications at once — every pairing flags severity, timing, and cited evidence.

Open the checker

Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider.