Formulation and Evaluation of Fast Dissolving Tablet of Verapamil by Using Natural Super Disintegrants

FAST DISSOLVING TABLET

FDT tablets don't require any liquid to breakdown or split in our mouths, and they dissolve and split quickly. The fast-dissolving tablets provide the pharmacological activity of the API by quickly dissolving into our oral saliva. Compared to regular tablets, FDT Tablets have better medication plasma concentration and good patient compliance. Because it is easy  to administer the formulation, there is no discomfort involved, and there is no patient noncompliance, we prefer the oral route over other administration methods. The most popular form of dosing is in tablets. However, certainly that tablets are hard to swallow are one of their main drawbacks. In order to address this kind of swallowing difficulty, the formulation department has created a fast-dissolving tablet method.

Advantage of FDT

• Easy to consume for small children, patients of mental disorder.
• Can be easily used by person who used to travel a lot and does not have any water to take the medicine.
• Easy for administering dose & precisely dosing with respect to liquid dosage form.
• Fast absorption rate & quick onset of action.
• It is simple for young children and people with mental illnesses to ingest.

Disadvantage of  FDT

• Needs to handle carefully because of poor strength.
• Improper formulation leads to undesirable taste.
• Needs dryplace because of water absorption nature.
• Cannot be given to patients who have dryness in their mouth.
• Needs different type of packaging material for the stability of the product

THEORY OF FAST DISSOLVING TABLETS

Due to its self-administering capabilities, ease of handling, affordability, and ease of production, tablets are the kind of dosage form that is most frequently given. However, these are definite drawback to it, including swallowing difficulties, especially in children and elderly people, as well as individuals who have trouble swallowing commonly used formulation  like tablets. This issue increases repeated when traveling due to water scarcity. These are challenging due to several shortcomings in both the delivery system's execution and design. In any case, understanding the fundamentals of the science in order to properly construct requires knowledge of the musk drug release strategy for the three elements listed.

1. Product's physiochemical properties and administration system.
2. Gestro intestine tract anatomical and physiological properties.
3. Physicochemical properties and drug delivery method for the type of administration in the    formulation
4. mouth disintegrating formulaton are known as quick-dissolving, melting, and water-soluble tablets.

Over the last decade, there has been a growing need for more patient-friendly types of medicine. As a performence, the creation of novel innovation has become greater important. Fast Dissolving Tablet is a dosage form (solid) containing therapeutic chemicals that are rapidly eliminated after application to the tongue, usually within a few seconds" (Orange Book) for CDER at the USFDA.

Problems to creating FDT

Tastes of the API attractive

The substance is occasionally used as a flavoring to oral effervescent systems of drug delivery.  most drugs are hard to chew. The most crucial way to combat patient noncompliance will be to conceal the unpleasant taste since FDT dissolves or disintegrates in the mouth and produces API that interacts with taste receptors. By adding an acceptable flavoring agent to an unattractive taste, many medications that have no taste can be made to taste better.

Mechanical strength

It takes a specialist to fish FDTs inside Mascara Gula. these are fragile and challenging to carry. This is fact that FDETs are either very porous or require little work and money. This Tantric has very little mechanical power.

Hygroscopicity

Due to hygroscopic nature, a performwnce of fast-dissolving dosage forms is unavailable to preserve the physical integrity of tablets in typical temperature and humidity settings. They therefore require protection from humidity and temperature, which necessitates use for specific product packaging.

Hydro solubility

Since there are not supporting framework present throughout the sublimation process, the develop the eutectic mixes that lower the freezing point and create an opaque glass material that hardens after drying complicates the formulation of water-soluble medications.

Superdisintegrants:

Superdisintegrants are referred to be unique ploymers because of their greater disintegration capacity. One kind of substance used in tablet manufacture to prevent disintegration in a humid environment is called a superdisintegrant.

Natural super disintegration

There are now a large number of naturally occurring pharmaceutical excipients on the market, and many researchers have investigated probable of compounds employed as disaggregation. Dehydrated banana powder, Lepiduum sativam mucilage, Salvia hispanica  mucilaee.

Synthetic superdisintegrant

 FDT preparation is used by synthetic superdisintegrants to increase the formulation's rate of disintegration. To increase the tablet's biavailability, a synthetic rapid disintegrating agent is used into the formulation. Sach as Croscarmellose, Crospovidone, Sodium Starch Glycolate, Kyron 314

MATERIAL & METHOD

Verapamil hydrochloride procured from meril life Sciences Pvt. Ltd., Bhagwanpur. All the other reagents used were of analytical grade

Determination of melting point

Assessing the melting point A fused tube of capillary with one end should contain the medicine verapamil hydrochloride, which should be put inside a digital melting point device (Perfit India, Model No. REC2802582). A medication's melting point is the temperature at which it starts to melt.

Determination of λ max of verapamil hydrochloride

A UV-visible spectrometer (UV-2450, Shimadzu) was used to generate the UV spectra of verapamil hydrochloride . The drug, precisely weighed at 10 mg, was added to a 100 ml flask. A volume increase to 100 ml was achieved using 100 μg/ml of water. A stock solution was used in this instance. To create suitable working solutions at different concentrations (10, 20, 30, 40, and 50 μg/ml), this solution (100 μg/ml) was utilized. The solution was scanne from 400 to 200 nm, and the spectra were recorded to determine the maximum wavelength in each solvent. Utilizing absorbance concentration data, a Beer-Lambert plot was produced. 

Preparation of Banana powder

A plantain (family: Musaceae) is the same as a banana. It contains vitamin A, or retinol. It also contains vitamin B6, or pyridoxal, which is advised to reduce stress. It increases brain activity and is high in potassium and carbs. [101] Carefully peel six fresh, unripe bananas and cut them into little pieces. These sections spent an entire day in the sun to dry. Following drying, the particles were suitably crushed into a powder. Banana powder production is a process that benefits the environment.

Isolation of mucilage of Salvia Hispanic

Salvia Hispanic seeds were steeped in water for a whole night (the seed-solvent ratio was 1:20), mixed on a magnetic stirrer for an hour, and then heated for 30 minutes to completely release the mucilage into the water. Centrifuging the liquid for 50 minutes at 5000 rpm produced three separate layers. Dry the gel layer at 50°C in a hot air oven. The product was stored at temperature in desiccators for subsequent utilize after being powdered and passing through sieve no. 80.

Angle of repose (θ)

A powder pile's angle of repose is the greatest angle that can occur between its surface and a horizontal plane. One can calculate the frictional force in loose grains or powder by measuring the angle of repose.

θ = tan-1 h/r

Bulk density

The bulk density of powder is affected by particle packing and changes with powder consolidation. A huge funnel was utilize to pour the bulk powder into a graduated cylinder, and bulk density was produce by measuring the volume and weight. The following formula is use to determine bulk density:

Bulk Density =   weight of powder/ Bulk Volume

Tapped density

 The density produced when a powder is crushed by vibration or tapping is referred to as "tapped density." By setting a graduated cylinder with a specific amount of powder on top of mechanical tapping equipment that is operated for a predetermined number of taps (100) or until the volume of the powder bed reaches a minimum, the taped density was determined. The tapped density was computed using the weight of the drug in the cylinder and its final volume. [

Tapped Density = weight of powder/ Tapped Volume

Hausner’s ratio

Hausner's ratio is one indirect way to gauge the ease of powder flow. This is the formula that determines it: [86].

H= Tapped Density/ Bulk Density

Formulation of mouth dissolving tablets

Every batch of tablets was produced using the direct compression process. The following substances were filtered using #60 sieves: aspartam, d-mannitol, dehydrated banana powder, salvia hispanica, and amlodipine besylate. For fifteen minutes, all of the ingredients—including the medication in measured amounts—were combined in a mortar and pounded using a pestle and mortar. The exact weight of one tablet was poured into the die cavity. The compression pressure adjustment knob and thickness adjustment screw were used to change the tablet's hardness and thickness, respectively. The powder was deposited within the die cavity and crushed using a single-station rotary press and concave punches, round, with an 8-mm diameter.

Table 2.1 Making of directly compressable prepared verapamil FDTs

POST COMPRESSION STUDIES

Weight variation test:

By using an electronic scale to weigh 20 tablets of the formulation type individually, determining the average weight, and comparing the weights of each tablet to the average, weight disparities were found.

Thickness and diameter

Physical dimensions are the regulated parameter used in formulation preparation. Diameter and thickness are important market factors as well as factors that affect the consistency of manufactured tablets.

Hardness

Before being used, a tablet's hardness dictates how resistant it is to breaking, handling, shipping, storage, and transit conditions. For every formulation, the hardness of six tablets is determine by the Monsanto hardness tester

Friability

Friability is a parameter used to measure tablet strength. To assess friability, the procedure was carried using a Roche Friabilator: In this test, the combined effects of impact abrasion are applied to tablets that are dropped six inches away with each revolution of a plastic container rotating at 25 rpm.

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Disintegration test

The USP disintegration device, which employed phosphate buffer at pH 6.8, was utilize to monior the concentration of time it took for mouth-dispersing pills to dissolve. The medium had a volume of 900 milliliters and a temperature of 37 °C±2 °C.

In vitro dissolution test

Using the USP type II (paddle) apparatus, the mechanism by which the medication was released from the tablet was examined. This method used 900 milliliters of pH 6.8 as the dissolve media, and the paddle was turned at a steady 500 revolutions per minute. A constant temperature of 37 °C±0.5 °C was maintained for the medium. One minute at a time for seven minutes, a five milliliter sample was taken out. Following filtering, a UV spectrophotometer was utilize to measure each sample's concentration. For the results, an average of the three measurements was given.

RESULT

Determination of melting point

Identifying the melting point A digital melting point device will be utilized to store the medicine Verapamil in a one-end fused capillary tube.

Table 3.1 Melting point of SD

Calibration Curve of verapamil hydrochloride In 6.8 pH Phosphate Buffer Solution at 237 Λmax:-

Method is described in section 5.3.1. The standard plot of Verapamil in Solution of 6.8 pH Phosphate Buffer indicates that the standard curve of Verapamil followed Beer’s law. Linearity between 1-10 µg/ ml and R2 value was found to be at 364 nm 0.9987, 239 nm 0.9981, 237 nm 0.9986.

Fig 6.3Absorbance of verapamil hydrochloride in 6.8 pH Phosphate Buffer Solution at 237 Λmax

FTIR of verapamil hydrochloride

The FTIR  of the medication showed that the indicated feature peaks of verapamil hydrochloride, Dehydrated banana powder and Sslvia Hispanic were retained. Verapamil hydrochloride was recognized as the medicine.

Prepare of Banana powder

Table 3.3 Organoleptic test of banana powder

Evaluation Test of Salvia hispanic

Prepare of salvia Hispanic Mucilage

Table 3.5 Organoleptic study of Salvia hispanic

Evaluation Test of Salvia hispanic

EVALUATION TEST OF POWDER BEFORE COMPRESSION

Angle of repose

The angel of repose was shown to vary between 27.42 ° and 29.81 °. These studies demonstrated that the easy flow of powder beds in all formulations.

Bulk density

It was show  that the bulk density ranged from 0.356±0.0044 to 0.372±0.0034g/ml.

Tapped density

The taped density was found to vary between 0.398±0.0052 and 0.422±0.0049g/ml.

Percentage compressibility index

According to the findings, the compressibility index varied between 10.63±1.73 and 14.62±2.56.

Hausner’s ratio

An indirect measure of powder flow ease is Hausner's ratio. The range of Hausner's ratio was determined      to be1.124 to 1.148.

Precompression parameters for fast dissolving tablets of F1 to F4 Formulation code *

AFTER COMPRESSION STUDIES

Thickness of tablet

The thickness, which ranged from 2.22±0.016 mm to 2.28±0.032 mm, was found to be constant.

Hardness

The crushing strength at which a tablet breaks is recorded using a Pfizer tablet hardness tester, which is commonly placed between anvils. From 2.86±0.025 kg/cm2 to 3.42±0.016 kg/cm2, the tablets' hardness varied.

Friability

The percentage of friability was calculate to be between 0.44±0.04% and 0.61±0.05%, which is  typical range

Disintegration

All tablets must break down and all particles must go through the 10 mesh in the allotted period in order to comply with the USP standard.  DT time was determine to be in range of 26±1.22 to 46±1.56 sec.

Table 3.8 for evaluation test

Weight Variation

The weight difference between tablets weighing more than 80 mg and less than 250 mg is 7.5%, per the IP

Weight variation for formulation of verapamil

Dissolution:-

Table 3.10 Percentage Drug Release of Optimized Batches of verapamil

Figure 3.4 Percentage Drug Release of Optimized Batches of verapamil

Table 3.11 Percentage Drug Release of Optimized Batches of verapamil

Figure 3.5 Percentage Drug Release of Optimized Batches of verapamil

Table 3.12 Percentage Drug Release of Optimized Batches of verapamil

Figure 3.7 Percentage Drug Release of Optimized Batches of verapamil