scPharmaceuticals (SCPH) 8-K All additional testing of devices manufactured on the planned commercial line, as required by the FDA, has been successful to date

Exhibit 99.1

scPharmaceuticals Inc. Reports Third Quarter 2021 Financial Results and Provides Business Update

All additional testing of devices manufactured on the planned commercial line, as required by the FDA, has been successful to date

FUROSCIX^® NDA resubmission anticipated for Q1 2022 due to COVID-19 related global supply chain logistics interruptions and travel restrictions

Revised NDA resubmission timeline is not expected to have an impact on anticipated Q4 2022 commercial launch of FUROSCIX, if approved

Ended Q3 with cash, cash equivalents, restricted cash and investments of $85.0 million, sufficient to fund operations into 2023; lowered 2021 net loss guidance to $29.0 to $31.0 million

BURLINGTON, Mass., November 9, 2021 (GLOBE NEWSWIRE) – scPharmaceuticals Inc. (Nasdaq: SCPH), a pharmaceutical company focused on developing and commercializing products that have the potential to optimize the delivery of infused therapies, advance patient care, and reduce healthcare costs, today announced financial results for the third quarter ended September 30, 2021 and provided a business update.

Business Update

• Provided an updated timeline for the resubmission of its FUROSCIX New Drug Application (NDA).

• During the Type C Meeting in June 2021, the Food and Drug Administration (FDA) did not request any additional clinical data or modifications to the on-body infusor and all testing to date on devices manufactured on the planned commercial line has been successful.

• Travel restrictions and related global supply chain delays resulting from the pandemic caused a temporary interruption in the completion of the required device builds and testing. The FUROSCIX NDA resubmission is now planned for Q1 2022.

• Revised NDA resubmission timeline is not expected to have an impact on anticipated Q4 2022 commercial launch of FUROSCIX, if approved.

• Presented positive results from the FREEDOM-HF study demonstrating that average 30-day heart failure related costs were reduced by $17,753 per study subject in the FUROSCIX arm compared to historically matched comparators (p<0.0001). This excludes the cost of FUROSCIX, as the price has yet to be established.

• Analyses of additional secondary endpoints have been conducted that provide additional insights into the clinical effectiveness of FUROSCIX.

• Patients who received FUROSCIX had a median reduction of heart failure peptide biomarkers from study entry (day 0) to first visit (day 2—4), and to last visit (day 30), of 42.3% and 28%, respectively (p < 0.01).

• Patients who received FUROSCIX had a 12.8-point improvement in the Kansas City Cardiomyopathy Questionnaire (KCCQ-12) Summary Score 30 days after study entry.

• Continued to advance the AT HOME-HF PILOT study evaluating the effectiveness and safety of FUROSCIX versus continued medical therapy in patients with chronic heart failure and fluid overload requiring augmentation in diuretic therapy outside of the hospital.

• Ended the third quarter with cash, cash equivalents, restricted cash and investments of $85.0 million.

“Today, we are modestly revising the timing of our FUROSCIX NDA resubmission to Q1 2022, reflecting the impact that COVID-19 has had on our third-party partners, as they have been working to complete the additional device testing as previously requested by the FDA,” stated John Tucker, chief executive officer of scPharmaceuticals. “Importantly, the revised resubmission timeline is not expected to impact our commercial readiness or the anticipated Q4 2022 commercial launch, if approved. We plan to build out world-class commercial and market access teams that I believe can make FUROSCIX the new standard of care in heart failure pre- and post-discharge,” Mr. Tucker concluded.

Third Quarter 2021 Financial Results and Financial Guidance

scPharmaceuticals ended the third quarter with $85.0 million in cash, cash equivalents, restricted cash and investments, compared to $105.3 million as of December 31, 2020. The Company believes its cash, cash equivalents, restricted cash and investments are sufficient to fund operations into 2023.

scPharmaceuticals reported a net loss of $6.6 million for the third quarter of 2021, compared to $9.0 million for the comparable period in 2020.

Research and development expenses were $3.7 million for the third quarter of 2021, compared to $5.1 million for the comparable period in 2020. The decrease in research and development expenses for the quarter ended September 30, 2021 was primarily due to a decrease in device and pharmaceutical development costs, partially offset by an increase in quality and regulatory consulting costs.

General and administrative expenses were $2.2 million for the third quarter of 2021, compared to $3.3 million for the comparable period in 2020. The decrease in general and administrative expenses for the quarter ended September 30, 2021 was primarily due to a decrease in employee related, commercial preparation, and legal costs.

Based on its current operating plan, the Company expects a net loss for 2021 to be in the range of $29.0 to $31.0 million for the fiscal year, a decrease over prior guidance of $30.0 to $34.0 million.

About FUROSCIX^® (furosemide injection) for subcutaneous injection

FUROSCIX is an investigational, proprietary furosemide solution formulated to a neutral pH, designed to allow for subcutaneous infusion via a wearable, pre-programmed on-body drug delivery system, for outpatient self-administration. FUROSCIX is currently under development for the treatment of congestion due to fluid overload in adult patients with New York Heart Association (NYHA) Class II and Class III chronic heart failure who display reduced responsiveness to oral diuretics and who do not require hospitalization. If approved, FUROSCIX has the potential to provide an outpatient alternative for the treatment of heart failure due to congestion.

About scPharmaceuticals

scPharmaceuticals is a pharmaceutical company focused on developing and commercializing products that are designed to reduce healthcare costs and improve health outcomes. The Company develops, internally and through strategic partnerships, innovative products and solutions that aim to expand and advance the outpatient care of select acute conditions. The Company’s lead programs focus on the subcutaneous, self-administration of IV-strength treatments in heart failure and infectious disease. scPharmaceuticals is headquartered in Burlington, MA. For more information, please visit www.scPharmaceuticals.com.

Forward-Looking Statement

This press release contains “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to, statements regarding the significance of the results of the FREEDOM-HF clinical trial; the interpretation and analyses of the results from the FREEDOM-HF clinical trial; the planned resubmission of the FUROSCIX NDA, including potential timing of the resubmission and expected timing of the FDA’s review; the potential timing of, and the Company’s expected progress towards, the advancement of the Company’s device verification, research and validation studies; the Company’s planned efforts to prepare for commercialization of FUROSCIX, the timing of commercial launch, if approved, and the success of such commercialization, if approved; and the potential benefits, expected costs and future plans and expectations for FUROSCIX, if approved, and the Company’s projected financial guidance, including projected annual loss . Any forward-looking statements in this press release are based on management’s current expectations of future events and are subject to a number of risks and uncertainties that could cause actual results to differ materially and adversely from those set forth in or implied by such forward-looking statements. These risks and uncertainties include, but are not limited to, the risk that results of a clinical study do not necessarily predict final results and that one or more of the clinical outcomes may materially change following more comprehensive reviews of the data, and as more patient data become available, the risk that results of a clinical study are subject to interpretation and additional analyses may be needed and/or may contradict such results, the risk of the ability of the FUROSCIX On-Body Infusor to appropriately deliver therapy, the receipt of regulatory approval for the FUROSCIX On-Body Infusor or any of our other product candidates or, if approved, the successful commercialization of such products, the risk of cessation or delay of any of the ongoing or planned clinical trials and/or our development of our product candidates, the risk that the results of previously conducted studies will not be repeated or observed in ongoing or future studies involving our product candidates, and the risk that the current COVID-19 pandemic will impact the Company’s device validation, drug stability testing, the timing of the Company’s resubmission of the FUROSCIX NDA and other operations. For a discussion of other risks and uncertainties, and other important factors, any of which could cause our actual results to differ from those contained in the forward-looking statements, see the section entitled “Risk Factors” in its Annual Report on Form 10-K for the year ended December 31, 2020 on file with the Securities and Exchange Commission, available at the Securities and Exchange Commission’s website at www.sec.gov, and as well as discussions of potential risks, uncertainties and other important factors in the Company’s subsequent filings with the Securities and Exchange Commission. All information in this press release is as of the date of the release, and the Company undertakes no duty to update this information unless required by law.

Katherine Taudvin

scPharmaceuticals Inc., 781-301-6706

ktaudvin@scpharma.com

Investors:

Hans Vitzthum

LifeSci Advisors, 617-430-7578

hans@lifesciadvisors.com

scPharmaceuticals Inc.

Unaudited Consolidated Statements of Operations

(in thousands, except share and per share data)

	THREE MONTHS ENDED SEPTEMBER 30,						NINE MONTHS ENDED SEPTEMBER 30,
	2020			2021			2020			2021
Operating expenses:
Research and development	$	5,119		$	3,694		$	14,404		$	11,509
General and administrative		3,319			2,211			8,359			7,593
Total operating expenses		8,438			5,905			22,763			19,102
Loss from operations		(8,438	)		(5,905	)		(22,763	)		(19,102	)
Other income (expense)		19			10			(13	)		298
Interest income		36			10			281			42
Interest expense		(655	)		(667	)		(1,930	)		(1,954	)
Net loss	$	(9,038	)	$	(6,552	)	$	(24,425	)	$	(20,716	)
Net loss per share, basic and diluted	$	(0.33	)	$	(0.24	)	$	(1.03	)	$	(0.76	)
Weighted—average common shares outstanding, basic and diluted		27,319,465			27,355,454			23,644,580			27,349,279

scPharmaceuticals Inc.

Unaudited Consolidated Balance Sheet Data

(in thousands)

	DECEMBER 31,    2020			SEPTEMBER 30,    2021
Cash, cash equivalents, restricted cash and investments	$	105,277		$	85,020
Working capital		98,505			72,265
Total assets		109,048			87,531
Term loan		19,266			19,554
Accumulated deficit		(161,664	)		(182,380	)
Total stockholders’ equity		82,170			63,110