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HS Code |
349994 |
| Generic Name | Guanfacine Hcl |
| Brand Names | Intuniv, Tenex |
| Drug Class | Alpha-2 adrenergic agonist |
| Dosage Forms | Tablet, extended-release tablet |
| Route Of Administration | Oral |
| Primary Indications | Attention Deficit Hyperactivity Disorder (ADHD), Hypertension |
| Mechanism Of Action | Stimulates alpha-2 adrenergic receptors, reducing sympathetic nerve impulses |
| Usual Adult Dose | 1-3 mg once daily (adjustable by physician) |
| Usual Pediatric Dose | Start at 1 mg once daily, titrate as needed |
| Common Side Effects | Drowsiness, fatigue, headache, dry mouth, abdominal pain |
| Pregnancy Category | Category B |
| Half Life | Approximately 17 hours |
| Metabolism | Hepatic (CYP3A4-mediated) |
| Excretion | Renal (mainly as metabolites) |
As an accredited Guanfacine Hcl factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Guanfacine HCl, 100 tablets per bottle, sealed in white opaque HDPE container with a child-resistant cap and labeled for identification. |
| Shipping | Guanfacine HCl should be shipped in tightly sealed containers, protected from light and moisture. The shipment must comply with local regulations for pharmaceutical chemicals. Typically, it is transported at room temperature unless otherwise specified, with clear labeling for identification. Ensure packaging prevents contamination and physical damage during transit. |
| Storage | Guanfacine HCl should be stored at controlled room temperature, typically between 20°C and 25°C (68°F and 77°F). It must be kept in a tightly closed container, protected from moisture, heat, and direct light. Ensure the storage area is secure, away from incompatible substances, and accessible only to authorized personnel to prevent accidental ingestion or misuse. |
Applications of Guanfacine HCl in Industrial ManufacturingGuanfacine hydrochloride is a pharmaceutical-grade raw material widely processed in several advanced sectors. Its specific actions as an adrenergic receptor agonist support applications requiring precision formulation and controlled release. As the direct manufacturer, we supply Guanfacine HCl at controlled purity for integration in regulated downstream environments. 1. CNS Pharmaceutical Formulation ManufacturingGuanfacine hydrochloride is a key API in the production of central nervous system (CNS) medications, particularly for attention deficit hyperactivity disorder (ADHD) and hypertension. In commercial tablet and extended-release formulations, manufacturers rely on its high purity to meet stringent US FDA and EMA requirements. The API is blended via direct granulation, ensuring controlled dosing and stability over shelf life. Downstream partners combine it with excipients calibrated to achieve targeted pharmacokinetics for patient compliance. Industry compliance standards
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2. Pediatric Liquid Pharmaceutical PreparationIn pediatric healthcare, Guanfacine HCl serves as the primary active in compounded oral solutions and suspensions, facilitating flexible dosing for children and non-tablet swallowing populations. Manufacturers require rigorous stability testing for color, taste-masking, and particle size, integrating the API using high-shear mixing to ensure complete dissolution in aqueous vehicles. The production process targets strict microbial control and preservative compatibility to maintain suspension homogeneity during long-term clinical storage. Industry compliance standards
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3. Clinical Research and Reference Standard SupplyPharmaceutical and CRO partners incorporate Guanfacine HCl as a certified reference material in preclinical and clinical trial settings. Analysts require exacting profiles for impurity thresholds, isotopic labeling, and standardization of QC test protocols. The supplied material undergoes batch-specific characterization for use in validating assay methods, pharmacokinetic studies, and reference calibration across global trial programs. Processed lots carry full analytical dossiers supporting regulatory submissions. Industry compliance standards
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4. API Intermediate for Custom Drug SynthesisCustom synthesis and CMO partners utilize Guanfacine HCl as a high-purity intermediate in the multistep production of investigational new drugs (INDs) and specialty adrenergic analogues. Typically, the raw material enters amidation or salt-exchange reactions under GMP-controlled environments, where stability and impurity profiles drive output quality. Our in-process release testing enables reliable scale-up and reproducibility for new molecular entity (NME) programs advancing to clinical-phase manufacture. Industry compliance standards
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In pharmaceutical production, every batch relies on consistency, clear traceability, and proven quality. As the manufacturer, we produce Guanfacine Hydrochloride—often abbreviated as Guanfacine HCl—by emphasizing every detail in the process. Years of hands-on experience show that careful control over each reaction parameter shapes not just the purity but the downstream performance during formulation. Our model, produced to recognized pharmacopoeial standards, has served tablets and finished dosage forms destined for both immediate and extended-release therapies.
Guanfacine HCl doesn’t land in the spotlight as often as some broad-spectrum APIs, but it provides key support where clinicians manage attention-related disorders and certain varieties of hypertension. In our facilities, we prioritize pharmaceutical-grade crystallinity, maintaining a narrow specification range for particle size, moisture content, and impurity profiles. The typical synthesis route we employ results in a highly stable monohydrate, with a white to off-white appearance. We measure and adjust pH, solvent residues, and endotoxin boundaries regularly, so each kilogram functions reliably from the lab bench to the final product line.
Many clients ask what separates our Guanfacine HCl from the pool of similar-sounding products. In practice, differences show up during tableting, compounding, and storage. Our control over batch reproducibility comes down to repeat equipment calibration, tighter retention samples, and lot-by-lot documentation. Some producers focus strictly on passing basic assay requirements. In contrast, we track secondary characteristics—like polymorphic form verification and solubility assessments in multiple pharmaceutical excipients—which directly affect how the API behaves in real-world tablet presses or capsule fillers.
During pilot scale-up, past partners encountered issues with flowability and compression under standard conditions. After in-depth feedback loops, we traced these down to micron-scale inconsistencies. By refining our milling protocols and implementing laser diffraction analysis for particle distribution, batch-to-batch variance dropped noticeably. These incremental improvements make a visible difference to anyone involved in formulation development or process validation.
Unlike generic commodity batches, the Guanfacine HCl from our line arrives with clear documentation tracing raw material origins and each critical process step. This transparency pays off for clients navigating regulatory inspection or drug master file submission. More than a certificate of analysis, our quality release includes impurity mapping well below ICH threshold requirements, microbial data, and every relevant chromatographic trace. The point isn’t just to satisfy paperwork, but to reduce headaches during scale-up and promote smooth interactions with agencies and auditors.
Experience inside real manufacturing sites shapes how we design our workflows. The wisdom gained from past setbacks—such as API sticking during direct compression optimization—has led to stricter granulation assessments and improved compatibility tests. Stability studies in controlled environments have shown that our Guanfacine HCl resists hygroscopicity far better than early-generation products, even after twelve months in open-dish trials at midrange humidity. This property means fewer downstream concerns, whether the API remains on the shelf or moves quickly from blending to tableting.
End users—whether formulation scientists or quality assurance managers—often highlight the lower carryover risk with our material. Where residue monitoring matters, especially in multi-product facilities, switching from competing APIs with wider impurity profiles translates to smaller cleaning burdens and enhanced yield. Careful pre-release batch testing further reduces risk, particularly under the stricter limits that come with ADHD and cardiovascular products.
Guanfacine HCl holds an essential role in oral solid dose manufacturing for attention deficit hyperactivity disorder (ADHD) and certain hypertension indications. Decades of use in prescription products have validated its safety profile when produced under good manufacturing practice. As the original material manufacturer, we work directly with blenders and formulation teams bringing both immediate-release and extended-release tablets to market.
Each API delivery reflects lessons drawn from past commercial launches. Feedback from tableting line operators and R&D analysts shapes our in-process adjustments. Our customers want a granulate that avoids segregation issues and enables flexible dosing adjustments, all while complying with the most current pharmacopeial limits. Repeated real-world use reveals that minor tweaks in particle morphology can help maintain a strong dissolution curve—even during scale jumps.
While some active ingredients appear interchangeable from a surface glance, our product demonstrates measurable gains in material handling, press tooling longevity, and predictable shelf life. Compared to generic variants, which sometimes introduce excess chloride or require additional purification, our monohydrate form exhibits lower intrinsic reactivity in standard excipient blends. That’s not just a laboratory distinction—end users report fewer granulation issues and tighter content uniformity in finished tablets, with less need for ongoing batch rework.
In witnessed cases where formulators substituted lower grade products, unintended complications like abnormal dissolution or unexpected impurities crept into the process. Through collaborative troubleshooting, we pinpointed root causes back to initial crystallization or solvent purity. Direct batch release—and our willingness to engage on technical queries—lets customers cut back on redundant testing and push regulatory submissions forward with more confidence in long-term stability.
Years spent refining the Guanfacine HCl process have revealed pitfalls and optimal workarounds. Unexpected shifts in solvent evaporation rates led us to overhaul drying schedules and isolated the best temperature window for consistent hydrate formation. We encountered problems with trace metals during the upstream halogenation phase on two occasions; ongoing raw material screening has prevented recurrence. The lessons learned from scaling up initial laboratory batches to full commercial volume encouraged the installation of inline sensors for real-time monitoring of product parameters.
This granular record-keeping has proven invaluable. By analyzing process deviations in real time, both our QC team and production staff collaborate quickly on corrective actions—whether adjusting mix speeds or filtration time. Feedback from pilot plant trials also fed into our continuous improvement efforts, allowing us to reduce waste, sharpen yield, and consistently hit purity marks near the top of regulatory requirements.
Every year brings updated health authority guidance and shifting regulatory targets on impurity exposure or trace solvent limits. We keep up, investing in new analytical platforms and reformulating in-process controls as needed. Current protocol includes heavy metals screening, residual solvents by headspace GC, and detailed polymorphic analysis, matching up with US, European, and Asian pharmaceutical standards. Real-world audits—both customer-led and by certifying agencies—keep us on track.
Our teams re-certify processes not just to check boxes but because we have seen how small deviations upstream multiply downstream. Longevity in API manufacturing depends on anticipating changes in customer needs, regulation, and operating environments. Our Guanfacine HCl never lags behind these shifts; instead, we ask for early input, welcoming customer audits and supplying detailed validation data that make product release and technology transfer faster and less stressful.
Long relationships with pharmaceutical partners have shaped how we document, archive, and share production data. Clients don’t have time for documentation errors that delay regulatory approval or bring surprises at audit. We issue batch records, supply retention samples, and grant access to archived stability and impurity data on request. This means clients can cross-verify data points during process qualification or postmarket surveillance.
Quality assurance teams frequently ask about change control—especially during line modifications. Our response includes robust change history logs, preset notification to affected partners, and side-by-side comparative data shows that batch equivalence holds steady across process tweaks. Traceability isn’t a slogan here—it is the result of repeated investments in software, retraining, and staff dedication to every batch that leaves our production site.
Supply chain interruptions over the past decade have influenced how we approach both raw material contracts and finished API readiness. By dual-sourcing critical solvents and intermediates, we’ve kept production on track through disruptions that caught others off guard. Maintaining a healthy safety stock buffer, partnered with local warehousing, means orders ship on short lead times—even during seasonal spikes in demand.
Price competition always enters the picture, especially in crowded therapeutic categories. We see the temptation to cut corners or take on less rigorous suppliers. Our history and rapport with downstream pharmaceutical firms show that consistent quality and technical engagement pay off beyond short-term cost savings. Supporting long-term value means more than just certificates—it requires honest communication, willingness to address issues, and sharing best practices that help clients resolve manufacturing hiccups before they impact patients.
Scientific progress seldom runs in a straight line. The industry has watched Guanfacine HCl move from a niche cardiovascular agent to a staple in multimodal treatment strategies. Conversations with formulating pharmacists and quality teams have yielded insights we actively deploy in the plant. For example, taking bench advice on blending duration or tablet disintegration testing feeds back into tight process feedback loops.
Our perspective as the manufacturer keeps us open to technical partnerships—ranging from early-stage method development to tailored packaging solutions for challenging climates. There’s no one-size-fits-all: some clients request pre-milled lots for direct compression, while others prefer bulk crystallized form for extended-release use. To address these needs, we cycle through collaborative reviews, pilot-scale demonstrations, and residual impurity mapping as soon as clients encounter pain points.
It’s easy to lose sight of basic service in a high-stakes business. We keep lines open, answer technical queries with people who have worked the reactors, and dispatch tailored documentation instead of generic cut-and-paste templates. As manufacturing science advances, we seek fresh methods—be it refining drying profiles, increasing yield, or harnessing digital analysis tools to ensure each batch of Guanfacine HCl supports better clinical outcomes.
Direct experience forging Guanfacine HCl from synthesis to QC release shapes every step in the chain. Customers seeking more than commodity ingredients benefit from this perspective: process efficiency, focused technical support, and data-driven assurance run throughout our practice. Through continuous investment in analytical instrumentation, process upgrades, and ongoing staff education, our product reliably supports branded and generic dosage launches across global markets.
By staying hands-on—listening, adjusting, and acting on both routine and unique challenges—our manufacturing approach drives measurable value, transforming Guanfacine HCl from a simple API into a reliable partner for complex pharmaceutical development. The future will challenge all manufacturers to adapt, blend new science with hard-earned experience, and stand ready to support partners not just as suppliers, but as problem solvers rooted in the realities of everyday production.