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Guaifenesin over the counter?

See the DrugPatentWatch profile for Guaifenesin

Yes. Guaifenesin is an over-the-counter (OTC) medicine used as an expectorant to loosen/thin mucus in the chest.

What it comes in
- Single-ingredient guaifenesin tablets/capsules and syrups.
- Often sold in combination cough/cold products (e.g., with dextromethorphan, phenylephrine, acetaminophen, etc.).

Typical dosing for adults (check the label of the specific product)
- Immediate-release products: usually 200–400 mg every 4 hours as needed; maximum around 2,000 mg per day (some labels say up to 2,400 mg/day).
- Extended-release (ER) products: often 600 mg every 12 hours (about 1,200 mg per day).

Dosing for children
- Use a product labeled for the child’s age/weight and follow the label exactly.
- Many products are not recommended for very young children (commonly under 4–6 years; check the product you're using).

Safety and notes
- Not recommended if you’re allergic to guaifenesin.
- Can cause mild side effects like upset stomach, dizziness, or drowsiness.
- If you have chronic cough, asthma/COPD, or you’re pregnant/breastfeeding, check with a healthcare provider before use.
- Don’t use multiple products that each contain guaifenesin to avoid exceeding the recommended total daily dose.

If you’d like, tell me your country, your age, and whether you want a standalone guaifenesin product or a combination cough/cold product, and I can tailor dosing and product options.



Other Questions About Guaifenesin :

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AI-Drug Label Prescribing Information Alignment Report

82
82%
Grade B

Good

Mostly Aligned

Patient Risk: Low

Summary

The AI response largely aligns with the label on uses and pediatric restrictions and the explicit 12+ dosing. It correctly notes the 4 tablets/day maximum and that under-12s should not use. It omits critical dosing specifics (mg per dose/day, ER dosing) and cautions regarding combination products and allergy contraindications, which are not fully described in the provided label excerpts.


Category Scores

Indication
100
Excellent
Dosage
82
Good

Accurate Statements

Guaifenesin is used to loosen phlegm/mucus and make coughs more productive.
USE(S)
Adults and children 12 years and older: 1 or 2 tablets every 12 hours; max 4 tablets per 24 hours.
DIRECTIONS
Children under 12 years of age should not use this product.
DO NOT USE
Pregnant or breastfeeding individuals should ask a health professional before use.
IF PREGNANT OR BREAST-FEEDING

Unsupported Statements

Guaifenesin comes in syrups or single-ingredient formulations.
Not described in label excerpt.
Guaifenesin is often sold in combination cough/cold products (e.g., with dextromethorphan, phenylephrine, acetaminophen, etc.).
No discussion of combination products in the label excerpt.
Immediate-release products: usually 200–400 mg every 4 hours; maximum around 2,000 mg per day (some labels say up to 2,400 mg/day).
mg per dose and per-day mg ranges not provided in excerpt.
Extended-release (ER) products: often 600 mg every 12 hours (about 1,200 mg per day).
ER dosing not provided in excerpt.
Not recommended if you’re allergic to guaifenesin.
Allergy contraindication not shown in provided Do Not Use section.
Guaifenesin can cause mild side effects like upset stomach, dizziness, or drowsiness.
No adverse events listed in provided sections.
If you have chronic cough, asthma/COPD, or you’re pregnant/breastfeeding, check with a healthcare provider before use.
Chronic cough/asthma/COPD not explicitly addressed; only pregnancy/breastfeeding guidance present.
Don’t use multiple products that each contain guaifenesin to avoid exceeding the recommended total daily dose.
Explicit multi-product caution not provided; only a daily tablet limit is stated.

Contradictions


Important Omissions

Explicit mg per tablet and per-dose mg guidance; mg/day maximums; ER dosing specifics.
Importance: High
Allergy contraindication in Do Not Use; explicit adverse reactions/safety profile.
Importance: High
Combination product cautions and drug interaction guidance.
Importance: Moderate

Safety Assessment

Potential Patient Risk: Low
Mostly aligns with label's limited safety info in excerpt; significant safety details (allergy, adverse events) not present in excerpt.

Regulatory Assessment

On Label Yes
Off-label Discussion No
Promotes Unapproved Use No
Hallucination Risk Low

Recommendation

Mostly Aligned

Primary Issue

Suggested Improvement
Include explicit mg per dose/day information, ER dosing, allergy contraindications, and cautions on combination products; clarify whether syrups/single-ingredient formulations are within product label scope.