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Internal rate of return is commonly known as IRR by those in the financial industry. To understand internal rate of retur

According to USFDA, a combination product is one composed of any combination of a drug and device; biological product and device; drug and biological product

n, you must first know what is NPV or net present value. IRR is discounted rate of return derived based on the conditio

; or drug, device, and biological product and fixed dose combination would include two or more combinations of drug.

Examples of combination products may in

n that net present value for an investment is 0. IRR is then compared to the company’s discounted rate of return. If IR

lude drug-coated devices, drugs packaged with delivery devices in medical kits, and drugs and devices packaged separately but intended to be used together.

is higher than the company’s / project’s discounted rate of returns, then the investment is deemed to be worthwhile for

here is enormous increase in the number of combination products entering the market in the recent years. Combination products have proven advantages but fixe

the company or investor.

The discounted rate of return for the company is determined by the investors themselves. Discou

d dose combinations are still in the process of convincing regulatory authority on their advantages over the single ingredient formulations.

Combination pro

nted rate of return is derived based on a number of factors. One of them is the consideration of risk. If the investor

ucts have become life saving products for the pharmaceutical companies who doesn’t have many innovative molecules in their product pipeline and have been inc

s evaluating a more risky investment, he is likely to have a higher rate of return. This is to compensate the risk that

easingly used in the product life cycle management. Even the companies having product patents are trying to extend their product life cycle through the combi

he is taking on this project. Another factor that could influence the discounted rate of return is the general market ra

nation products and maximize the revenues. But the companies involved in this practice are overlooking that they are burdening the patients both economically

te of return.

To calculate the internal rate of return manually (without a financial calculator) is a very laborious pro

and physically. They need to rightly judge the benefits of the combination products and they have to even look at the risks involved when combining the produ

ess. It will take you minutes if not hours. However, using Excel, you can do it in less than a minute. Assuming that th

ts. Some of the combination products were well accepted by physicians while others suffered. Companies involved in development of combination products are fi

e cash flows (from year 0 to year 5) is in the range "D$3:J$3", the formula to derive the IRR is "=IRR(D$3:J$3)" withou

ding difficulty in defining their combination products and facing various challenges from selecting a combination to marketing it.

Following aspects would a

t quotes.

Now that we have learnt how to calculate the internal rate of return, it is important to know that IRR can onl

dd to the challenges in developing combination products:

Which markets to tap where the combination products can do fairly well?
Which combination prod

be used under certain conditions. The best way to determine if the IRR can be used is to plot the NPV of the investmen

cts are meaningful and rational?
Which therapeutic categories to select?
Which Combinations can address unmet needs of the patients?
Do combin

t against the discount rate of return. If the NPV crosses the X-axis more than once, i.e. NPV is zero more than once, t

tions increase the patient compliance?
What would be the developing cost?
How to tackle the risks encountered during combination product developmen

han the investment is considered to have multiple internal rate of return and should be used with caution.

It is very

t?

As combination products don't fit into the traditional categories of drugs, medical devices, or biological products, the USFDA is in the process of devel

afe to use IRR only when the cash inflow or outflow only changes once. This means that you can have a series of outflow

ping new procedures for reviewing their safety, efficacy and quality.

Professional from academic institutions, pharmaceutical industries, health care indust

before the inflow comes in. Once the inflow kicks in, outflow cannot be present again. Alternatively, you could have a s

y and representatives from various regulatory agencies are working out to design the regulatory requirements for manufacture and sale of combination products

eries of inflow first followed by a series of outflow, but inflow of funds cannot appear again. If there are multiple I

.

As there is an increasing trend of the combination products companies manufacturing such products should be able to tackle the problems involved in the de

R, then it would be difficult to determine which IRR to use.

If there are changes in the cash flows from negative to p

elopment. They need to be wiser in analyzing the market trends and the regulatory requirements.

Companies that provide selfless information through particip

ositive and back again to negative, the chances of this investment having multiple internal rate of return is very high

tion in industry events and feedback to regulatory authorities would be able to face the challenges and will be successful in developing combination products

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