September was a reasonably mixed month for the S&P/ASX 200 (Index: ^AXJO) (ASX: XJO). Although it finished the month more or less flat, several popular shares on the index such as TPG Telecom Ltd (ASX: TPM) fell heavily during the month and have yet to recover.

If your portfolio took a bit of a hit, I believe the following three growth shares could be just what it needs to give it a lift again.

Bellamy’s Australia Ltd (ASX: BAL)

In August Bellamy’s shares climbed around 12% after reporting a whopping 322% increase in net profit after tax to $38.3 million. But since then it has been nothing but down for its shares, much to the dismay of shareholders. Following a 3% decline today, this organic infant formula producer’s shares are now down around 17% from their post-earnings high. At just 17x estimated FY 2017 earnings I believe Bellamy’s is great value at the moment. Thanks to the big improvement in its margins and the insatiable demand from Chinese consumers, I believe the company will deliver on the market’s strong growth expectations. All being well this should be the catalyst to taking the share price higher again.

iSentia Group Ltd (ASX: ISD)

Media monitoring company iSentia is another company which posted impressive full year results recently. Due to the strong growth of its Asia/Rest of the World segment and a better-than-expected performance from its recently acquired King Content business, iSentia reported a 23.6% rise in full-year net profit after tax to $24.3 million. According to CommSec analysts are currently forecasting this strong performance to continue. Analysts have forecast earnings to grow at an average of 32.5% per annum through to at least FY 2018. So with its shares changing hands at 21x estimated FY 2017 earnings, I believe iSentia is reasonably good value at this point.

Nanosonics Ltd. (ASX: NAN)

Nanosonics’ trophon EPR ultrasound probe disinfector is what attracts me to the infection control solutions provider. According to the company, clinical studies have shown that the toxic liquid disinfectants currently being used in high level disinfectant ultrasound probes are wholly ineffective against human papillomavirus, whereas the company’s trophon technology is completely effective. The growing popularity of its trophon technology not only meant the company recently reported a 93% jump in full year sales to $42.8 million, but it has also helped it win a 22% share of the North American market in a short space of time. Its shares are a little on the expensive side though at 23x sales, so it may be prudent to limit any investment to just a small part of your portfolio.

Finally, if you need to make room in your portfolio then I would highly recommend removing these wealth destroying shares from it today. Each could be holding back your portfolio and might be best swapped out.

3 Rotten Shares to Sell, and 1 to Buy Today

After a double-digit rally for the ASX since 2016 lows, investors should be on high alert. You'll find a full rundown below of 3 shares we think you should avoid today plus one top pick worth buying, even if the market turns south and the RBA keeps rates at an "emergency low." Simply click here to uncover these stocks.

HOT OFF THE PRESSES: Motley Fool’s #1 Dividend Pick for 2017!

With its shares up 155% in just the last five years, this ‘under the radar’ consumer favourite is both a hot growth stock AND our expert’s #1 dividend pick for 2017. Now we’re pulling back the curtain for you... And all you have to do to discover the name, code and a full analysis is enter your email below!

Simply enter your email now to receive your copy of our brand-new FREE report, “The Motley Fool’s Top Dividend Stock for 2017.”

By clicking this button, you agree to our Terms of Service and Privacy Policy. We will use your email address only to keep you informed about updates to our website and about other products and services we think might interest you. You can unsubscribe from Take Stock at anytime. Please refer to our https://www.fool.com.au/financial-services-guide">Financial Services Guide (FSG) for more information.

Motley Fool contributor James Mickleboro has no position in any stocks mentioned. The Motley Fool Australia owns shares of Bellamy's Australia. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy. This article contains general investment advice only (under AFSL 400691). Authorised by Bruce Jackson.