Relative Bioavailability of Drug Calculator

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Drug Content Area under curve Bioavailability Dose Drug Stability Elimination Rate Constant Isotonic Solutions Plasma Steady state Concentration Volume of Distribution Volume of plasma cleared

✖The Area under curve Dosage A is the integral of the concentration-time curve for A form of dosage.ⓘ Area under curve Dosage A [AUC_dosageA]			+10% -10%
✖The Area under curve Dosage B is the integral of the concentration-time curve for B form of dosage.ⓘ Area under curve Dosage B [AUC_dosageB]			+10% -10%
✖Dose Type B is the amount of drug administered in B-type dosage form.ⓘ Dose Type B [D_B]			+10% -10%
✖Dose Type A is the amount of drug administered in A-type dosage form.ⓘ Dose Type A [D_A]			+10% -10%

✖Relative Bioavailability compares the bioavailability between two different dosage forms.ⓘ Relative Bioavailability of Drug [F_rel]

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Formula

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Relative Bioavailability of Drug

Formula

F rel = (\frac{AUC dosageA}{AUC dosageB}) \cdot (\frac{D B}{D A})

Example

0.859273 = (\frac{1.141 mol*s/L}{1.732 mol*s/L}) \cdot (\frac{15 mol}{11.5 mol})

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Relative Bioavailability of Drug Solution

STEP 0: Pre-Calculation Summary

Formula Used

Relative Bioavailability = (Area under curve Dosage A/Area under curve Dosage B)*(Dose Type B/Dose Type A)
F_rel = (AUC_dosageA/AUC_dosageB)*(D_B/D_A)
This formula uses 5 Variables

Variables Used

Relative Bioavailability - Relative Bioavailability compares the bioavailability between two different dosage forms.
Area under curve Dosage A - (Measured in Mole Second per Cubic Meter) - The Area under curve Dosage A is the integral of the concentration-time curve for A form of dosage.
Area under curve Dosage B - (Measured in Mole Second per Cubic Meter) - The Area under curve Dosage B is the integral of the concentration-time curve for B form of dosage.
Dose Type B - (Measured in Mole) - Dose Type B is the amount of drug administered in B-type dosage form.
Dose Type A - (Measured in Mole) - Dose Type A is the amount of drug administered in A-type dosage form.

STEP 1: Convert Input(s) to Base Unit

Area under curve Dosage A: 1.141 Mole Second per Liter --> 1141 Mole Second per Cubic Meter (Check conversion here)
Area under curve Dosage B: 1.732 Mole Second per Liter --> 1732 Mole Second per Cubic Meter (Check conversion here)
Dose Type B: 15 Mole --> 15 Mole No Conversion Required
Dose Type A: 11.5 Mole --> 11.5 Mole No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

F_rel = (AUC_dosageA/AUC_dosageB)*(D_B/D_A) --> (1141/1732)*(15/11.5)

Evaluating ... ...

F_rel = 0.859273019379456

STEP 3: Convert Result to Output's Unit

0.859273019379456 --> No Conversion Required

FINAL ANSWER

0.859273019379456 ≈ 0.859273 <-- Relative Bioavailability

(Calculation completed in 00.004 seconds)

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Created by Prashant Singh

K J Somaiya College of science (K J Somaiya), Mumbai

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< 5 Drug Content Calculators

Concentration of Drug given Rate of Infusion of Drug

Go Concentration of Drug = Rate of Infusion/Volume of Plasma Cleared

Rate of Infusion of Drug

Go Rate of Infusion = Volume of Plasma Cleared*Concentration of Drug

Absorption Half-Life of Drug

Go Absorption Half Life = ln(2)/Absorption Rate Constant

Drug Rate Entering Body

Go Absorption Rate Constant = ln(2)/Absorption Half Life

Apparent Volume of Drug Distribution

Go Volume of Distribution = Dose/Concentration of Drug

Relative Bioavailability of Drug Formula

Relative Bioavailability = (Area under curve Dosage A/Area under curve Dosage B)*(Dose Type B/Dose Type A)
F_rel = (AUC_dosageA/AUC_dosageB)*(D_B/D_A)

What is Pharmacokinetics?

Pharmacokinetics is a branch of pharmacology dedicated to determine the fate of substances administered to a living organism. The substances of interest include any chemical xenobiotic such as: pharmaceutical drugs, pesticides, food additives, cosmetics, etc. It attempts to analyze chemical metabolism and to discover the fate of a chemical from the moment that it is administered up to the point at which it is completely eliminated from the body. Pharmacokinetics is the study of how an organism affects a drug, whereas pharmacodynamics (PD) is the study of how the drug affects the organism. Both together influence dosing, benefit, and adverse effects, as seen in PK/PD models.

How to Calculate Relative Bioavailability of Drug?

Relative Bioavailability of Drug calculator uses Relative Bioavailability = (Area under curve Dosage A/Area under curve Dosage B)*(Dose Type B/Dose Type A) to calculate the Relative Bioavailability, The Relative bioavailability of drug formula is defined as the comparison of the bioavailability between two different dosage forms. Relative Bioavailability is denoted by F_rel symbol.

How to calculate Relative Bioavailability of Drug using this online calculator? To use this online calculator for Relative Bioavailability of Drug, enter Area under curve Dosage A (AUC_dosageA), Area under curve Dosage B (AUC_dosageB), Dose Type B (D_B) & Dose Type A (D_A) and hit the calculate button. Here is how the Relative Bioavailability of Drug calculation can be explained with given input values -> 0.859273 = (1141/1732)*(15/11.5).

FAQ

What is Relative Bioavailability of Drug?

The Relative bioavailability of drug formula is defined as the comparison of the bioavailability between two different dosage forms and is represented as F_rel = (AUC_dosageA/AUC_dosageB)*(D_B/D_A) or Relative Bioavailability = (Area under curve Dosage A/Area under curve Dosage B)*(Dose Type B/Dose Type A). The Area under curve Dosage A is the integral of the concentration-time curve for A form of dosage, The Area under curve Dosage B is the integral of the concentration-time curve for B form of dosage, Dose Type B is the amount of drug administered in B-type dosage form & Dose Type A is the amount of drug administered in A-type dosage form.

How to calculate Relative Bioavailability of Drug?

The Relative bioavailability of drug formula is defined as the comparison of the bioavailability between two different dosage forms is calculated using Relative Bioavailability = (Area under curve Dosage A/Area under curve Dosage B)*(Dose Type B/Dose Type A). To calculate Relative Bioavailability of Drug, you need Area under curve Dosage A (AUC_dosageA), Area under curve Dosage B (AUC_dosageB), Dose Type B (D_B) & Dose Type A (D_A). With our tool, you need to enter the respective value for Area under curve Dosage A, Area under curve Dosage B, Dose Type B & Dose Type A and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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