Sildenafil Strips – Orally Disintegrating Strip (viagra strips)
This can be reduced by decreasing the contact angle amidst printing droplets and substrate by usage of the hydrophilic component, hydroxypropyl methylcellulose (HPMC), which enhances the hydrophilicity of ODFs. In addition, alterations in mechanical properties of the film must be considered as they may influence the stability of ODF, which can be dealt by coating the ODF postproduction. This technique allows relatively low loading doses compared to others but offers high precision and accuracy. This advantage has been successfully utilized for designing personalized medicine and those drugs that require precise dosing like drugs with narrow therapeutic index or high potency [Citation7,Citation61–63]. Flexographic printing is the most recent technique that is a flexible and cost-effective alternative to the IJP and solvent casting methods. In solvent casting and hot extrusion methods, the API gets integrated into the formulation in the initial steps prior to film formation. This can add unwanted stresses at various stages of manufacturing, handling, transport, and storage that may influence the quality and stability of APIs. The flexographic printing technique reduces this undue stress on APIs during mixing, solvent evaporation, and drying and is specifically beneficial in handling labile APIs. Similar to IJP, this method is favorable in the fabrication of thermolabile drugs and highly potent low-dose APIs as ODFs [Citation33,Citation64]. This method transfers the prepared ink formulation through a fountain roll onto an anilox roller on a drug-free ODF layer.
17. Patient Counseling Information
This display of bioequivalent pharmacokinetics between the two formulations supports and recommends the use of innovative ODF formulation as a befitting alternative to the customary oral solid dosage form [Citation73–75]. Two randomized cross-over studies were conducted to examine the pharmaceutical equivalence of 50 mg sildenafil citrate ODF with the marketed 50 mg sildenafil citrate FCT with and without water. The study recruited 42 and 80 healthy male volunteers in the first and second studies, respectively. Bioequivalence was demonstrated for sildenafil citrate ODF with water in comparison with the sildenafil citrate FCT as the ratios of adjusted geometric means (90% confidence interval [CI]) were utmost plasma concentration: 1.02 [94.91–108.78] and area under the plasma concentration–time curve: 1.09 [104.49–113.21]) for sildenafil citrate ODF with water vs sildenafil citrate FCT with water. The bioequivalence was demonstrated as the resultant ratios were within the approved range of 80% to 125%.
Patient resources
Furthermore, the pharmacokinetic parameters in the successive study also established the bioequivalence for sildenafil citrate ODF (without water) with that of sildenafil citrate FCT with water. The ratios of adjusted geometric means (90% CI) were maximum plasma concentration: 1.02 (95.47–109.36) and area under the plasma concentration–time curve: 1.06 (103.42–108.40) for sildenafil citrate ODF without water vs sildenafil citrate FCT with water. The occurrence of adverse events was observed at similar rates for both the formulations in all the studies, which were of mild intensity. The study results demonstrated the bioequivalence and supported the interchangeability of new sildenafil citrate ODF formulation with the marketed FCT formulation [Citation76]. The usage of ODFs is convenient among patients due to its durability, ease of administration with no suffocation risk, and ease of carrying the strips without the need for a secondary container [Citation8]. The excess is carefully scrapped using a doctor’s blade. In the subsequent step, the ink solution or suspension is then transferred from the anilox roller to the plate cylinder and onto drug-free ODF. The solution is then passed through the impression cylinder for printing the drug-loaded ODFs. Finally, after solvent drying, they are cut into required dimensions and shapes [Citation7,Citation65]. This printing method enables flexible fabrication process as it supports multiple printing cycles and can be set up in both in laboratory setting and industrial scale. This technique can be combined with other manufacturing methods like IJP to design both standard release and prolonged-release drug delivery systems [Citation33].
| Product | Dosage | Quantity + Bonus | Price | |
|---|---|---|---|---|
| Viagra Generic | 150mg | 60 + 4 Pills | 111.25€ 105.95€ | |
| Kamagra Polo | 100mg | 60 + 4 Pills | 189.39€ 180.37€ | |
| Viagra Generic | 200mg | 30 + 2 Pills | 83.07€ 79.11€ | |
| Viagra Generic | 200mg | 360 + 10 Pills | 481.98€ 459.03€ | |
| Kamagra Soft Tabs | 100mg | 272 + 12 Pills | 593.42€ 565.16€ | |
| Kamagra Oral Jelly | 100mg | 21 Sachets | 95.92€ 91.35€ | |
| Viagra Generic | 200mg | 10 Pills | 40.96€ 39.01€ | |
| Viagra Generic | 200mg | 20 Pills | 61.69€ 58.75€ | |
| Kamagra Polo | 100mg | 12 Pills | 60.21€ 57.34€ | |
| Kamagra Oral Jelly | 100mg | 110 + 9 Sachets | 334.87€ 318.92€ | |
| Kamagra Oral Jelly | 100mg | 90 + 8 Sachets | 303.56€ 289.10€ | |
| Viagra Generic | 150mg | 10 Pills | 36.73€ 34.98€ |
This printing method also referred to as additive manufacturing produces precisely designed ODFs by utilizing the contemporary computer‐aided design (CAD), which develops 3D geometries in a sequential layer‐by‐layer fashion [Citation61,Citation66].
| Parameter | Description | Typical Values | Notes |
|---|---|---|---|
| Absorption Time | Time to reach peak plasma levels | 15-30 minutes | Faster than tablets |
| Peak Plasma Concentration | Max concentration after dose | 120-250 ng/mL | Varies with dose |
| Half-life | Time for plasma levels to reduce by half | 3-5 hours | Limits dosing frequency |
| Bioavailability | Percentage of dose reaching systemic circulation | Approx. 80% | Enhanced via mucosal absorption |
This technique is relatively simple and cost-effective and shows flexibility in designing and dose accuracy. This method allows accurate drug sildenafil citrate 150 mg red pill loading, notably for drugs with narrow therapeutic index, and aids in manufacturing personalized medicine. This helps to tailor the therapeutic approaches to meet the unique physiological requirements of individual patients [Citation66]. The utilization of this additive manufacturing technique has significantly lowered the preparation time along with tremendous improvement in the mechanical characteristics of films. There are several 3D printing techniques, like the fused deposition method, hot-melt extrusion, and print-fill, which utilizes thermoplastic polymers that serve as the primary component [Citation67]. These fabricated personalized films have the capability to be used in a clinical setting, as they substantially enhance the therapeutic efficacy, minimize adverse drug reactions, and aid in improved patient outcomes [Citation5,Citation68,Citation69]. Fused deposition modeling or fused filament fabrication is a nozzle-based deposition technique. In this 3D printing method, API is embedded in a molten thermoplastic polymer filament, which gets extruded through a nozzle, maintained at a high-temperature, and deposited as incremental layers—with quick solidification to a build plate.
Rapid Acting
This can be reduced by decreasing the contact angle amidst printing droplets and substrate by usage of the hydrophilic component, hydroxypropyl methylcellulose (HPMC), which enhances the hydrophilicity of ODFs. In addition, alterations in mechanical properties of the film must be considered as they may influence the stability of ODF, which can be dealt by coating the ODF postproduction. This technique allows relatively low loading doses compared to others but offers high precision and accuracy. This advantage has been successfully utilized for designing personalized medicine and those drugs that require precise dosing like drugs with narrow therapeutic index or high potency [Citation7,Citation61–63]. Flexographic printing is the most recent technique that is a flexible and cost-effective alternative to the IJP and solvent casting methods.
ORAL STRIPS
In solvent casting and hot extrusion methods, the API gets integrated into the formulation in the initial steps prior to film formation. This can add unwanted stresses at various stages of manufacturing, handling, transport, and storage that may influence the quality and stability of APIs. The flexographic printing technique reduces this undue stress on APIs during mixing, solvent evaporation, and drying and is specifically beneficial in handling labile APIs. Similar to IJP, this method is favorable in the fabrication of thermolabile drugs and highly potent low-dose APIs as ODFs [Citation33,Citation64]. This method transfers the prepared ink formulation through a fountain roll onto an anilox roller on a drug-free ODF layer.
Can I get S-FILM without a prescription?
The excess is carefully scrapped using a doctor’s blade. In the subsequent step, the ink solution or suspension is then transferred from the anilox roller to the plate cylinder and onto drug-free ODF. The solution is then passed through the impression cylinder for printing the drug-loaded ODFs. Finally, after solvent drying, they are cut into required dimensions and shapes [Citation7,Citation65]. This printing method enables flexible fabrication process as it supports multiple printing cycles and can be set up in both in laboratory setting and industrial scale. Several factors need to considered during the manufacturing of ODFs through this technique, including API content and filament dimension uniformity, optimum temperature and printing speed, and the impact of API presence in the polymer matrix on printing parameters. This technology is widely used in pharmaceutical industries for the manufacturing of immediate-release and extended-release formulations [Citation67]. This method is promising in fabricating those drugs that are poorly/sparingly water soluble, thus improving their dissolution rate. It does not require solvents making it environmentally safe, has a lesser cost, and is suitable for both large- and small-scale production [Citation70]. This 3D printing technique is also known as a pressure‐assisted microsyringe method used for the manufacture of ODFs. In this method, excipients, additives, and active ingredients are either dissolved or dispersed in a solution and dried at room temperature to form a semisolid mixture. This semisolid material is extruded incessantly layer-by-layer through a syringe‐based nozzle onto the build plate. This is followed by in‐process drying, which forms a critical step and may influence the physical properties of the incorporated excipients, drug, and overall quality of ODFs [Citation18].
- Sildenafil oral strips provide a non-invasive way to treat ED.
- They avoid swallowing pills, which some patients find difficult.
- Strips are often manufactured with pleasant flavors to enhance appeal.
- The medication’s effect can be influenced by food intake.
- Alcohol consumption may reduce effectiveness or increase side effects.
- Sildenafil strips should be used as prescribed and not mixed with other ED drugs.
- These strips are designed for quick absorption in the oral mucosa.
- Overuse or misuse can lead to adverse health effects.
- Proper dosing helps minimize risks of prolonged erections or priapism.
- Sildenafil strips do not cure ED but help manage symptoms.
- They may be used in combination with psychological or lifestyle interventions.
- Always check expiration dates before using sildenafil strips.
This method fabricates ODFs through a one‐step process without necessitating the preparation of API-loaded filaments, unlike other 3D printing technologies.
Benefits of V-ORAL STRIPS 100 mg
This technique can be combined with other manufacturing methods like IJP to design both standard release and prolonged-release drug delivery systems [Citation33]. This printing method also referred to as additive manufacturing produces precisely designed ODFs by utilizing the contemporary computer‐aided design (CAD), which develops 3D geometries in a sequential layer‐by‐layer fashion [Citation61,Citation66]. This technique is relatively simple and cost-effective and shows flexibility in designing and dose accuracy. This method allows accurate drug sildenafil citrate 150 mg red pill loading, notably for drugs with narrow therapeutic index, and aids in manufacturing personalized medicine. This helps to tailor the therapeutic approaches to meet the unique physiological requirements of individual patients [Citation66].
Indications and Usage for Sildenafil Oral Film
The utilization of this additive manufacturing technique has significantly lowered the preparation time along with tremendous improvement in the mechanical characteristics of films. There are several 3D printing techniques, like the fused deposition method, hot-melt extrusion, and print-fill, which utilizes thermoplastic polymers that serve as the primary component [Citation67]. These fabricated personalized films have the capability to be used in a clinical setting, as they substantially enhance the therapeutic efficacy, minimize adverse drug reactions, and aid in improved patient outcomes [Citation5,Citation68,Citation69]. Fused deposition modeling or fused filament fabrication is a nozzle-based deposition technique. In this 3D printing method, API is embedded in a molten thermoplastic polymer filament, which gets extruded through a nozzle, maintained at a high-temperature, and deposited as incremental layers—with quick solidification to a build plate.
Possible Side Effects
Several factors need to considered during the manufacturing of ODFs through this technique, including API content and filament dimension uniformity, optimum temperature and printing speed, and the impact of API presence in the polymer matrix on printing parameters. This technology is widely used in pharmaceutical industries for the manufacturing of immediate-release and extended-release formulations [Citation67]. This method is promising in fabricating those drugs that are poorly/sparingly water soluble, thus improving their dissolution rate. It does not require solvents making it environmentally safe, has a lesser cost, and is suitable for both large- and small-scale production [Citation70]. This 3D printing technique is also known as a pressure‐assisted microsyringe method used for the manufacture of ODFs. The SSE is the utmost successful 3D printing method for fabricating ODFs. The optimum mixture of drug, excipients, and solvent defines the ideal rheological characteristics of the semi-solid formulation.
| Advantage | Description | Evidence/Reference |
|---|---|---|
| Rapid Dissolution | Dissolve in mouth within seconds | Pharmacokinetic studies |
| Ease of Administration | No swallowing needed, suitable for dysphagia | Patient surveys |
| Precise Dosing | Accurate dose delivery without pills | Manufacturing standards |
| Discreet Usage | No need for water, discreet intake | User testimonials |
| Better Bioavailability | Faster absorption through oral mucosa | Clinical pharmacology reports |
This is extremely important as it affects the extrudability of semi-solid formulation in desired flow through the nozzle before printing. Studies have shown that ODFs have exhibited fast disintegration time, appropriate printing resolution, and precise dimensions due to incorporation of 5% sodium carboxymethylcellulose during the preparation. Since this method avoids any processes at elevated temperatures, it allows usage of thermosensitive polymers for the fabrication of ODFs [Citation61,Citation71,Citation72]. The assessment and characterization of ODFs involve an array of essential tests to warrant their quality, organoleptic properties, and performance. These tests comprise assessments of thickness, weight uniformity, film robustness and durability, flexibility, water absorption or uptake capacity, swelling, surface features, and moisture content. The other tests involve disintegration and release tests, tensile properties, tensile strength, puncture resistance, elongation at break, elastic modulus, porosity, folding durability and endurance, taste evaluation, and uniformity of drug content. These tests are indispensable in pharmaceutical formulation development for evaluating the quality of ODFs.
- Sildenafil strips are an alternative to traditional pill forms.
- The strips dissolve quickly, eliminating need for water to swallow.
- They are convenient for on-the-go use and discreet consumption.
- Possible side effects include headache, flushing, and dizziness.
- Sildenafil strips should be used approximately one hour before activity.
- Not suitable for individuals with certain health conditions; consult a doctor.
- They are typically used in men aged 18 and above.
- The medication works by increasing blood flow to the penis.
- Sildenafil strips can be part of a broader erectile dysfunction treatment plan.
- Side effects may vary depending on individual health status.
- Erectile response may improve with proper use and dosing.
- They are available through licensed pharmacies and online sources.
A compilation of commonly used sildenafil 130mg in vitro techniques that evaluate the mechanical characteristics is provided in Supplementary Table S1. Several studies have demonstrated bioequivalence between sildenafil ODF formulation and conventional film-coated tablets (FCTs). This display of bioequivalent pharmacokinetics between the two formulations supports and recommends the use of innovative ODF formulation as a befitting alternative to the customary oral solid dosage form [Citation73–75].
8. Future perspective
In this method, excipients, additives, and active ingredients are either dissolved or dispersed in a solution and dried at room temperature to form a semisolid mixture. This semisolid material is extruded incessantly layer-by-layer through a syringe‐based nozzle onto the build plate. This is followed by in‐process drying, which forms a critical step and may influence the physical properties of the incorporated excipients, drug, and overall quality of ODFs [Citation18]. This method fabricates ODFs through a one‐step process without necessitating the preparation of API-loaded filaments, unlike other 3D printing technologies. The SSE is the utmost successful 3D printing method for fabricating ODFs.
4.1 Nitrates
The optimum mixture of drug, excipients, and solvent defines the ideal rheological characteristics of the semi-solid formulation. This is extremely important as it affects the extrudability of semi-solid formulation in desired flow through the nozzle before printing. Studies have shown that ODFs have exhibited fast disintegration time, appropriate printing resolution, and precise dimensions due to incorporation of 5% sodium carboxymethylcellulose during the preparation. Since this method avoids any processes at elevated temperatures, it allows usage of thermosensitive polymers for the fabrication of ODFs [Citation61,Citation71,Citation72]. The assessment and characterization of ODFs involve an array of essential tests to warrant their quality, organoleptic properties, and performance.
Q: What should I do if the strip does not work?
These tests comprise assessments of thickness, weight uniformity, film robustness and durability, flexibility, water absorption or uptake capacity, swelling, surface features, and moisture content. The other tests involve disintegration and release tests, tensile properties, tensile strength, puncture resistance, elongation at break, elastic modulus, porosity, folding durability and endurance, taste evaluation, and uniformity of drug content. These tests are indispensable in pharmaceutical formulation development for evaluating the quality of ODFs. A compilation of commonly used sildenafil 130mg in vitro techniques that evaluate the mechanical characteristics is provided in Supplementary Table S1. Several studies have demonstrated bioequivalence between sildenafil ODF formulation and conventional film-coated tablets (FCTs). Two randomized cross-over studies were conducted to examine the pharmaceutical equivalence of 50 mg sildenafil citrate ODF with the marketed 50 mg sildenafil citrate FCT with and without water. The study recruited 42 and 80 healthy male volunteers in the first and second studies, respectively. Bioequivalence was demonstrated for sildenafil citrate ODF with water in comparison with the sildenafil citrate FCT as the ratios of adjusted geometric means (90% confidence interval [CI]) were utmost plasma concentration: 1.02 [94.91–108.78] and area under the plasma concentration–time curve: 1.09 [104.49–113.21]) for sildenafil citrate ODF with water vs sildenafil citrate FCT with water.
Author contributions
The bioequivalence was demonstrated as the resultant ratios were within the approved range of 80% to 125%.
What If I Missed A Dose Of S-FILM Orally Disintegrating Strip
Among other advantages, the sildenafil ODF offers unique benefit to patients with ED in respecting their privacy. While the shame and the stigma culturally linked to the ED management is considered a major unmet need of the patients treated with phosphodiesterase 5 inhibitors (PDE5-Is), the ODF allows them to carry the drug in their pockets, in the most discreet way, and then be placed on the tongue before engaging in sexual activity [Citation8,Citation77,Citation78]. Furthermore, the absence of the need to swallow the drug with water further increases the ease of use and the potential reduction of the stigma of being treated with a traditional pill. In fact, when the film is placed upon the tongue or in the oral cavity, it gets immediately hydrated by saliva without any need of water followed by rapid disintegration and drug release for oro-mucosal and/or systemic absorption [Citation76]. To further demonstrate the possibility to safely store the drug in the pocket, maximizing the need for a discreet treatment, a stress test has been conducted on sildenafil ODF by exposing it to elevated temperatures (60 degrees Celsius) for three weeks, mimicking extreme storage conditions and followed by evaluation of its physical and chemical stability. Furthermore, the pharmacokinetic parameters in the successive study also established the bioequivalence for sildenafil citrate ODF (without water) with that of sildenafil citrate FCT with water. The ratios of adjusted geometric means (90% CI) were maximum plasma concentration: 1.02 (95.47–109.36) and area under the plasma concentration–time curve: 1.06 (103.42–108.40) for sildenafil citrate ODF without water vs sildenafil citrate FCT with water. The occurrence of adverse events was observed at similar rates for both the formulations in all the studies, which were of mild intensity. The study results demonstrated the bioequivalence and supported the interchangeability of new sildenafil citrate ODF formulation with the marketed FCT formulation [Citation76]. The usage of ODFs is convenient among patients due to its durability, ease of administration with no suffocation risk, and ease of carrying the strips without the need for a secondary container [Citation8].
| Brand Name | Manufacturer | Price Range | Availability | FDA Approval Status |
|---|---|---|---|---|
| Strips of Eros | PharmaX Ltd. | $15 - $25 | Online, pharmacies | Approved |
| VistoStrips | MedSolutions Inc. | $20 - $30 | Distributors | Pending approval |
| OralEase | BioHealth Corp. | $17 - $24 | Specialty stores | Approved |
| QuickDissolve | NutraPharma | $18 - $28 | Online marketplaces | Approved |
| FastRelief | HealthGen | $16 - $22 | Pharmacies, online | Approved |
Among other advantages, the sildenafil ODF offers unique benefit to patients with ED in respecting their privacy. While the shame and the stigma culturally linked to the ED management is considered a major unmet need of the patients treated with phosphodiesterase 5 inhibitors (PDE5-Is), the ODF allows them to carry the drug in their pockets, in the most discreet way, and then be placed on the tongue before engaging in sexual activity [Citation8,Citation77,Citation78]. Furthermore, the absence of the need to swallow the drug with water further increases the ease of use and the potential reduction of the stigma of being treated with a traditional pill. In fact, when the film is placed upon the tongue or in the oral cavity, it gets immediately hydrated by saliva without any need of water followed by rapid disintegration and drug release for oro-mucosal and/or systemic absorption [Citation76]. To further demonstrate the possibility to safely store the drug in the pocket, maximizing the need for a discreet treatment, a stress test has been conducted on sildenafil ODF by exposing it to elevated temperatures (60 degrees Celsius) for three weeks, mimicking extreme storage conditions and followed by evaluation of its physical and chemical stability.