UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934
(Amendment No. 6)*

Matthew D. Eitner

Chief Executive Officer

Laidlaw & Company (UK) Ltd.
546 Fifth Avenue, 5^th Floor,
New York, NY 10036
(212) 953-4900

Copies to:

Dennis J. Block
Greenberg Traurig, LLP
200 Park Avenue
New York, NY 10166
(212) 801-2222

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box. ¨

Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule 13d-7 for other parties to whom copies are to be sent.

* The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

¹ Includes (i) 585,233 shares of Common Stock registered in the name of Mr. Eitner (including 111,247 shares of Common Stock underlying warrants and restricted stock awards), (ii) 7,060 shares of Common Stock registered in the name of Mr. Eitner’s wife, Katie L. Eitner, and (iii) 544,312 shares of Common Stock registered in the name of Mr. Ahern (including 111,246 shares of Common Stock underlying warrants and restricted stock awards).

² Calculated based on 11,592,278 shares of the Common Stock outstanding as of November 18, 2015, as reported in the Issuer’s Schedule 14A filed with the SEC on November 27, 2015 (“Schedule 14A”), and adjusted for shares of Common Stock underlying warrants and restricted stock awards beneficially owned by Mr. Eitner and Mr. Ahern.

³ Includes (i) 585,233 shares of Common Stock registered in the name of Mr. Eitner (including 111,247 shares of Common Stock underlying warrants and restricted stock awards), (ii) 7,060 shares of Common Stock registered in the name of Mr. Eitner’s wife, Katie L. Eitner, and (iii) 544,312 shares of Common Stock registered in the name of Mr. Ahern (including 111,246 shares of Common Stock underlying warrants and restricted stock awards).

⁴ Calculated based on 11,592,278 shares of Common Stock outstanding as of November 18, 2015, as reported in the Schedule 14A, and adjusted for shares of Common Stock underlying warrants and restricted stock awards beneficially owned by Mr. Eitner and Mr. Ahern.

This Amendment No. 6 amends and supplements the Schedule 13D filed with the Securities and Exchange Commission (the “SEC”) on October 22, 2015 (the “Original Schedule 13D”), as amended by Amendment No. 1 filed with the SEC on November 5, 2015 (the “First Amendment”), Amendment No. 2 filed with the SEC on December 7, 2015 (the “Second Amendment”), Amendment No. 3 filed with the SEC on December 8, 2015 (the “Third Amendment”), Amendment No. 4 filed with the SEC on December 9, 2015 (the “Fourth Amendment”) and Amendment No. 5 filed with the SEC on December 21, 2015 (the “Fifth Amendment” and together with the Original Schedule 13D, the First Amendment, the Second Amendment, the Third Amendment and the Fourth Amendment, the “Schedule 13D”) relating to the common stock, $0.001 par value per share (the “Common Stock”), of Relmada Therapeutics, Inc., a Nevada corporation (the “Issuer”). The address of the principal executive office of the Issuer is 757 Third Avenue, Suite 2018, New York, NY 10017.

Capitalized terms not defined herein shall have the meaning ascribed to them in the Schedule 13D. Except as set forth herein, the Schedule 13D is unmodified.

Item 2 of the Schedule 13D is hereby amended and supplemented as follows:

Item 2. Identity and Background.

Item 2 (d)–(e) of the Schedule 13D is hereby amended and supplemented by adding the following information:

On December 22, 2015, the Federal District Court for the District of Nevada issued, pending a full trial on the merits, a preliminary injunction enjoining Laidlaw, Matthew D. Eitner and James P. Ahern (the “Defendants”) from disseminating false and misleading proxy materials and requiring them to retract or correct any false and misleading proxy materials in the same manner set forth in the ex parte temporary restraining order issued against the Defendants on December 10, 2015, as disclosed in the Fifth Amendment and the December 21 Press Release.

SIGNATURES

After reasonable inquiry and to the best of each of the undersigned’s knowledge and belief, each of the undersigned certifies that the information set forth in this statement is true, complete and correct.

Dated: December 29, 2015