PERRIGO COMPANY PLC REPORTS 2018 FOURTH QUARTER AND FULL-YEAR FINANCIAL RESULTS Full-year 2018 GAAP ("Reported") net sales of $4.7 billion , reflecting a 4% decline versus a year ago; Fourth quarter

PERRIGO COMPANY PLC REPORTS 2018 FOURTH QUARTER AND FULL-YEAR FINANCIAL RESULTS

Dublin, Ireland - February 27, 2019 - Perrigo Company plc (NYSE; TASE: PRGO) today announced financial results for the fourth quarter and calendar year ended December 31, 2018.

Perrigo President and CEO Murray S. Kessler commented, "While 2018 was a difficult year for Perrigo, significant progress was made in the fourth quarter against the Company's transformation plans. Market share in our consumer businesses were stable for the year, and the Company met its updated full-year 2018 guidance expectations despite an unusual equipment start-up issue at one of our facilities that resulted in a fourth quarter adjusted EPS headwind of approximately $0.08. It was also encouraging to see a meaningful, sequential improvement in the RX segment during the fourth quarter, as downward pricing pressure eased."

Kessler continued, "While the Company is facing a number of challenges, I am pleased with the rapid progress our team is making on its transformation plans and evolution from a healthcare company to a consumer self-care company. We are continuing to make significant progress with the separation of the RX business and recently received the $250 million milestone payment related to Tysabri ."

Kessler concluded, "We look forward to sharing our strategy as well as providing demonstrable progress at our Investor Day presentation on May 9, 2019 in New York City. Investors can expect to see the Company's plans for portfolio reconfiguration, capacity and technology investments, innovation initiatives, cost savings plans to help fuel growth, capital allocation plans, organizational effectiveness initiatives and calendar 2019 guidance at that time. While there is much work to do, I remain excited and confident in our ability to recapture the 'Perrigo Advantage' and bring the Company back to profitable and sustainable growth."

Refer to Tables I - VI at the end of this press release for a reconciliation of non-GAAP measures to the current year and prior year periods and additional non-GAAP information. The Company's reported results are included in the attached Condensed Consolidated Statements of Operations, Balance Sheets and Statements of Cash Flows.

Calendar Year 2018 Results

(1) Calendar year 2017 net sales have been adjusted to exclude approximately $21 million of sales attributable to the divested Israel API business.

Reported net sales for calendar year 2018 were approximately $4.7 billion, which included new product sales of $170 million, partially offset by discontinued products of $66 million. Adjusted net sales decreased 4.6% on a constant currency basis. Unfavorable currency movements impacted net sales by $34 million.

Reported net income was $131 million, or $0.95 per diluted share, versus $120 million, or $0.84 per diluted share, in the prior year. Excluding charges as outlined in Table I, calendar year 2018 adjusted net income was $629 million, or $4.55 per diluted share, versus $703 million, or $4.93 per diluted share, last year.

Fourth Quarter Results

(in millions, except earnings per share amounts, unaudited)

(see the attached Tables I - VI for reconciliation to GAAP numbers)

(1) Fourth quarter 2017 net sales have been adjusted to exclude approximately $4 million of sales attributable to the divested Israel API business.

Net sales for the fourth quarter of calendar year 2018 were approximately $1.2 billion, which included new product sales of $51 million, partially offset by discontinued products of $16 million. Adjusted net sales decreased 5.1% on a constant currency basis. Unfavorable currency movements impacted net sales by $18 million.

Reported net income was $82 million, or $0.60 per diluted share, versus $73 million, or $0.52 per diluted share, in the prior year. Excluding charges as outlined in Table I, fourth quarter 2018 adjusted net income was $132 million, or $0.97 per diluted share, versus $180 million, or $1.28 per diluted share, for the same period last year.

Consumer Healthcare Americas Segment

(in millions, unaudited)

(see the attached Tables I - VI for reconciliation to GAAP numbers)

CHC Americas segment net sales were down 4.1% compared to last year. Net sales in the analgesics and smoking cessation categories coupled with new product sales of $10 million, were more than offset by lower net sales in the animal health and nutrition categories. Discontinued products in the quarter were $10 million, of which $6 million related to the animal health business. Excluding the animal health business, CHC Americas net sales decreased approximately 1.9% on a constant currency basis.

CHC Americas' fourth quarter reported gross profit margin was 29.5%. Adjusted gross profit margin was 30.4% or 560 bps lower than the prior year. The majority of this decline was due to an unusual equipment startup issue at one facility, higher input costs and greater operating inefficiencies, including service-related challenges.

Reported fourth quarter operating margin was 16.4%. Fourth quarter adjusted operating margin was 18.0%, lower than the prior year due primarily to adjusted gross margin flow through, partially offset by lower administrative expenses.

Consumer Healthcare International Segment

(in millions, unaudited)

(see the attached Tables I - VI for reconciliation to GAAP numbers)

CHC International net sales were relatively flat, excluding $2 million in net sales from exited businesses in 2017 and unfavorable foreign currency movements of $17 million. Net sales in the diagnostics and analgesics categories, in addition to new product sales of $19 million, were mostly offset by lower net sales in the lifestyle and cough cold categories. The absence of net sales from discontinued products was $2 million.

Reported and adjusted gross margin decreased 110 bps versus a year ago due primarily to less favorable product mix.

Reported operating margin was (0.5)%. Adjusted operating margin decreased 240 basis points to 12.9%. Growth investments in advertising and promotion as well as R&D increased approximately 350 bps as a percentage of net sales compared to prior year. These increases were partially offset by lower selling and administrative expenses.

Prescription Pharmaceuticals Segment

(in millions, unaudited)

(see the attached Tables I - VI for reconciliation to GAAP numbers)

RX net sales were $222 million in the quarter, lower than the prior year due primarily to industry dynamics, including pricing pressure, supply constraints in a few specific products and discontinued products of $4 million. New product sales were $22 million.

Reported gross margin was 45.5%. Adjusted gross margin was 54.8%, or 160 bps higher than the same quarter last year, driven primarily by new product launches.

Reported operating margin was 30.5%. Adjusted operating margin was 39.2%, or 110 bps higher than the prior year due primarily to adjusted gross margin flow through while maintaining R&D dollar investments for growth.

The Company will host a conference call at 4:30 p.m. EDT (1:30 p.m. PDT), February 27, 2019. The conference call will be available live via webcast to interested parties in the investor relations section of the Perrigo website at http://perrigo.investorroom.com/events-webcasts or by phone at 888-317-6003, International 412-317-6061, and reference ID # 0121144. A taped replay of the call will be available beginning at approximately 8:00 p.m. (EST) Wednesday, February 27, 2019, until midnight March 6, 2019. To listen to the replay, dial 877-344-7529, International 412-317-0088, and use access code 10128203.

Perrigo Company plc is dedicated to making lives better by bringing high "Quality, Affordable Self-Care Products " that consumers trust everywhere they are sold. The Company is a leading provider of over-the-counter health and wellness solutions that enhance individual well-being by empowering consumers to proactively prevent or treat conditions that can be self-managed. Visit Perrigo online at (http://www.perrigo.com).

Forward-Looking Statements

Certain statements in this press release are "forward-looking statements." These statements relate to future events or the Company's future financial performance and involve known and unknown risks, uncertainties and other factors that may cause the actual results, levels of activity, performance or achievements of the Company or its industry to be materially different from those expressed or implied by any forward-looking statements. In some cases, forward-looking statements can be identified by terminology such as "may," "will," "could," "would," "should," "expect," "forecast," "plan," "anticipate," "intend," "believe," "estimate," "predict," "potential" or the negative of those terms or other comparable terminology. The Company has based these forward-looking statements on its current expectations, assumptions, estimates and projections. While the Company believes these expectations, assumptions, estimates and projections are reasonable, such forward-looking statements are only predictions and involve known and unknown risks and uncertainties, many of which are beyond the Company's control, including: the timing, amount and cost of any share repurchases; future impairment charges; the success of management transition; customer acceptance of new products; competition from other industry participants, some of whom have greater marketing resources or larger market shares in certain product categories than the Company does; pricing pressures from customers and consumers; resolution of uncertain tax positions, including the Company's appeal of the Notice of Assessment issued by the Irish tax authority ("NoA") and the impact that an adverse result in such proceedings would have on operating results, cash flows, and liquidity; potential third-party claims and litigation, including litigation relating to the Company's restatement of previously-filed financial information and litigation relating to uncertain tax positions, including the NoA; potential impacts of ongoing or future government investigations and regulatory initiatives; the impact of tax reform legislation and healthcare policy; general economic conditions; fluctuations in currency exchange rates and interest rates; the consummation of announced acquisitions or dispositions and the success of such transactions, and the Company's ability to realize the desired benefits thereof; and the Company's ability

to execute and achieve the desired benefits of announced cost-reduction efforts and strategic and other initiatives. Statements regarding the separation of the RX business, including the expected benefits, anticipated timing, form of any such separation and whether the separation ultimately occurs, are all subject to various risks and uncertainties, including future financial and operating results, our ability to separate the business, the effect of existing interdependencies with our manufacturing and shared service operations, and the tax consequences of the planned separation to the Company or its shareholders. Furthermore, the Company may incur additional tax liabilities in respect of 2016 and prior years or be found to have breached certain provisions of Irish company law in connection with the Company's restatement of previously-filed financial statements, which may result in additional expenses and penalties. These and other important factors, including those discussed under "Risk Factors" in the Company's Form 10-K for the year ended December 31, 2018, as well as the Company's subsequent filings with the United States Securities and Exchange Commission, may cause actual results, performance or achievements to differ materially from those expressed or implied by these forward-looking statements. The forward-looking statements in this press release are made only as of the date hereof, and unless otherwise required by applicable securities laws, the Company disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

This press release contains certain non-GAAP measures. A "non-GAAP financial measure" is defined as a numerical measure of a company's financial performance that excludes or includes amounts different from the most directly comparable measure calculated and presented in accordance with U.S. Generally Accepted Accounting Principles (GAAP) in the statements of operations, balance sheets or statements of cash flows of the Company. Pursuant to the requirements of the U.S. Securities and Exchange Commission, the Company has provided reconciliations for net sales on a constant currency basis, net sales excluding sales attributable to held-for-sale businesses, the animal health reporting unit the European distribution and Russian businesses, as well as adjusted gross profit, adjusted operating income, adjusted net income, adjusted diluted earnings per share, adjusted gross margin, and adjusted operating margin, within this press release to the most directly comparable U.S. GAAP measures for these non-GAAP measures. These non-GAAP financial measures should be considered as supplements to the GAAP reported measures, should not be considered replacements for, or superior to the GAAP measures and may not be comparable to similarly named measures used by other companies.

The Company provides non-GAAP financial measures as additional information that it believes is useful to investors and analysts in evaluating the performance of the Company's ongoing operating trends, facilitating comparability between periods and companies in similar industries and assessing the Company's prospects for future performance. These non-GAAP financial measures exclude items, such as impairment charges, restructuring charges, and acquisition and integration-related charges, that by their nature affect comparability of operational performance or that we believe obscure underlying business operational trends. The non-GAAP measures the Company provides are consistent with how management analyzes and

assesses the operating performance of the Company, and disclosing them provides investor insight into management's view of the business. Management uses these adjusted financial measures for planning and forecasting in future periods, and evaluating segment and overall operating performance. In addition, management uses certain of the profit measures as factors in determining compensation.

Non-GAAP measures related to profit measurements, which include adjusted gross profit, adjusted operating income, adjusted net income, and adjusted diluted EPS are useful to investors as they provide them with supplemental information to enhance their understanding of the Company's underlying business performance and trends, and enhance the ability of investors and analysts to compare the Company's period-to-period financial results. Management believes that adjusted gross margin and adjusted operating margin are useful to investors, in addition to the reasons discussed above, by allowing them to more easily compare and analyze trends in the Company's peer business group and assisting them in comparing the Company's overall performance to that of its competitors. The Company discloses adjusted net sales, which excludes operating results attributable to the animal health reporting unit, the API business, the European distribution and Russian businesses in order to provide information about sales of the Company's continuing business. In addition, the Company discloses net sales growth and adjusted net sales growth on a constant currency basis to provide information about sales of the Company's continuing business excluding the exogenous impact of foreign exchange. The Company believes these supplemental financial measures provide investors with consistency in financial reporting, enabling meaningful comparisons of past, present and future underlying operating results, and also facilitate comparison of the Company's operating performance to the operating performance of its competitors.

A copy of this press release, including the reconciliations, is available on the Company's website at www.perrigo.com.

Bradley Joseph, Vice President, Global Investor Relations & Corporate Communications

(269) 686-3373; e-mail: bradley.joseph@perrigo.com

CONSOLIDATED STATEMENTS OF OPERATIONS

(in millions, except per share amounts)

CONSOLIDATED BALANCE SHEETS

(in millions, except per share amounts)

CONSOLIDATED STATEMENTS OF CASH FLOWS