Amlodipine besylate dosage forms
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Amlodipine Besylate Dosage Forms
Introduction to Amlodipine Besylate
Amlodipine besylate is a widely used calcium channel blocker prescribed for the treatment of hypertension and angina. It is known for its efficacy in reducing blood pressure and improving cardiovascular health. This article explores the various dosage forms of amlodipine besylate, including tablets, liquid suspensions, and fixed-dose combinations.
Tablet Dosage Forms
Standard Tablets
Amlodipine besylate is commonly available in tablet form, typically in doses of 5 mg and 10 mg. These tablets are designed for once-daily oral administration and are effective in maintaining stable blood pressure levels throughout the day .
Bioequivalence of Generic and Original Tablets
Studies have shown that generic formulations of amlodipine besylate are bioequivalent to the original branded versions. This means that both formulations have similar pharmacokinetic profiles and safety profiles, making generic options a viable alternative for patients .
Liquid Dosage Forms
Extemporaneously Prepared Suspensions
For patients who have difficulty swallowing tablets, such as pediatric or elderly patients, amlodipine besylate can be prepared in liquid suspension forms. Research has demonstrated that amlodipine besylate remains stable in two types of suspensions—one using methylcellulose and syrup, and another using OraPlus/OraSweet—when stored at 4°C for up to 91 days and at 25°C for up to 56 days . These liquid forms ensure accurate dosing based on body weight, which is particularly important for children.
Pediatric Oral Solutions
A specialized oral solution of amlodipine besylate has been developed for pediatric use. This formulation, which includes sucrose syrup and methyl paraben, remains stable for up to 12 months when stored at 4°C. It provides a flexible dosing option for children and adolescents, ensuring effective management of hypertension in this population .
Fixed-Dose Combinations
Amlodipine Besylate with Losartan
Fixed-dose combinations (FDCs) of amlodipine besylate with other antihypertensive agents, such as losartan, are available to enhance therapeutic outcomes. Studies have shown that an FDC of 6.94 mg amlodipine besylate (equivalent to 5 mg amlodipine) with 50 mg losartan potassium has similar pharmacokinetic profiles and tolerability compared to other amlodipine salts combined with losartan .
Amlodipine Besylate with Olmesartan
Another FDC includes amlodipine besylate with olmesartan medoxomil. Research indicates that the combination of 10 mg amlodipine besylate with 40 mg olmesartan medoxomil is bioequivalent to the combination of amlodipine orotate with olmesartan medoxomil, providing similar safety and efficacy profiles 35.
Analytical Methods for Dosage Forms
HPLC Methods
High-performance liquid chromatography (HPLC) methods have been developed and validated for the simultaneous determination of amlodipine besylate in combination with other drugs such as metoprolol succinate, valsartan, and atenolol in tablet dosage forms. These methods ensure the quality and consistency of the pharmaceutical products throughout their shelf life 6789.
Conclusion
Amlodipine besylate is available in various dosage forms, including tablets, liquid suspensions, and fixed-dose combinations, catering to different patient needs. The stability and bioequivalence of these forms ensure effective and safe treatment for hypertension and related conditions. The development of reliable analytical methods further supports the consistent quality of these pharmaceutical products.
Sources and full results
Most relevant research papers on this topic
Bioequivalence evaluation of two amlodipine salts, besylate and orotate, each in a fixed-dose combination with olmesartan in healthy subjects
Amlodipine orotate/olmesartan medoxomil 10/40 mg is bioequivalent to amlodipine besylate/olmesartan medoxomil 10/40 mg in treating high blood pressure in healthy subjects.
RP-HPLC Method for the Simultaneous Estimation and Validation of Amlodipine Besylate and Atenolol in Bulk and Tablet Dosage Form in Biorelevant Dissolution Medium (Fassif)
The developed RP-HPLC method effectively analyzes Amlodipine Besylate and Atenolol in tablet dosage forms and biorelevant media without interference from excipients.
Design and stability study of an oral solution of amlodipine besylate for pediatric patients.
A pediatric oral solution of amlodipine besylate, suitable for use in children, has been developed and validated, with a stable shelf-life of 12 months at 4°C and in-use stability of 18 weeks.
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