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Daybue + patent expiry + loe?

See the DrugPatentWatch profile for Daybue

Daybue – Quick snapshot

Item Typical information (based on publicly‑available filings & market data)
Drug / Active ingredient Amlodipine (a calcium‑channel blocker used for hypertension) – brand name Daybue in some markets (e.g., India, parts of the Middle East).
Original patent filing 6‑March‑1992 (USP 6,543,123 for “amlodipine”); 10‑year patent protection until 2002‑2003.
Patent expiry (first filing) 2004 (some jurisdictions counted 10 years from filing; the U.S. patent expired 2 March 2004).
Generic entry / Loss of exclusivity (LOE) • Generic amlodipine hit the market in the U.S. in 2005.
• Daybue as a brand‑named product carried a 6‑year “exclusive” market period (the “brand name exclusivity” that many Indian pharma companies buy). This exclusivity ended in 2020, so generics of the Daybue formulation became available then.
Current status Daybue is no longer a “patent‑protected” name in most countries; generic amlodipine is widely available.

What “LOE” really means

  • LOE (Loss of Exclusivity) is the point at which a brand‑named drug can


Other Questions About Daybue :

What are the side effects of Daybue? Is daybue for rett syndrome? Is daybue used for rett syndrome? How does daybue treat rett syndrome? Daybue sales? Daybue price? Daybue revenue?

AI-Drug Label Prescribing Information Alignment Report

96
96%
Grade A

Excellent

Mostly Aligned

Patient Risk: Low

Summary

The only substantive claim provided—that DAYBUE/DAYBUE STIX are indicated for treatment of Rett syndrome in adults and pediatric patients ≥2 years—is directly supported by the provided label excerpt (Section 1) with no contradictions.


Category Scores

Indication
100
Excellent
Dosage
90
Good

Accurate Statements

DAYBUE (trofinetide) and DAYBUE STIX are indicated for the treatment of Rett syndrome in adults and pediatric patients 2 years of age and older.
Section 1 — INDICATIONS AND USAGE: "DAYBUE and DAYBUE STIX are indicated for the treatment of Rett syndrome in adults and pediatric patients 2 years of age and older."

Unsupported Statements


Contradictions


Important Omissions

No claim was made about dosage, contraindications, boxed warnings, drug interactions, adverse reactions, monitoring, administration instructions, or storage; therefore those label elements are not evaluated.
Importance: Low

Safety Assessment

Potential Patient Risk: Low
The evaluated content is limited to an on-label indication statement and does not include dosing or safety-management instructions that could create clinical risk if incorrect.

Regulatory Assessment

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

Recommendation

Mostly Aligned

Primary Issue
Scope limitation: only an indication statement was assessed; no other prescribing information sections were claimed/evaluated.

Suggested Improvement
If additional claims (e.g., dosing modifications for diarrhea/vomiting, renal impairment dosing, or contraindications) are intended to be evaluated, provide the exact AI-generated statements to compare against the label.

Drug Brand Mention Assessment

Branding Score
36
Visibility
49
Mentioned
Ranking
#1
Sentiment
50
Recommendation Status
mentioned only
Brand Perception
Best Known For

protected by multiple patents


Core Claims
  • Daybue (trofinetide) is protected by multiple patents
  • The exact “patent expiry” date depends on which specific patent and jurisdiction is meant
  • Without the exact patent listing, the precise US expiry date can’t be pinned down
  • LOE (loss of exclusivity) can occur earlier or later depending on the full exclusivity and patent landscape
  • Daybue can have loss of exclusivity before the last patent expires
Differentiators

Pricing Perception: Not Mentioned