Compositions and methods for treating cannabinoid hyperemesis syndrome with a cannabinoid receptor antagonist

1. A composition formulated for parenteral administration comprising an amount of drinabant, or a salt or polymorph thereof, effective to treat, reverse, or reduce cannabinoid hyperemesis syndrome (CHS) or one or more symptoms thereof in a subject.

2. A method of treating, reversing, or reducing CHS or one or more symptoms thereof in a subject comprising parenterally administering to the subject an amount of drinabant or a salt or polymorph thereof, effective to treat, reverse, or reduce cannabinoid hyperemesis syndrome (CHS) or one or more symptoms thereof.

3. The method as recited in claim 2 , wherein the plasma concentrations achieved by parenteral administration of drinabant or salt or polymorph thereof sufficient to treat, reverse, or reduce the CHS or one or more symptoms thereof is 200 to about 730 ng/ml.

4. The method as recited in claim 3 , wherein the parenteral route of administration is chosen from among intravenous (IV), intramuscular (IM), and subcutaneous (SC).

5. The method as recited in claim 4 , wherein the parenteral route of administration is IV.

6. The method as recited in claim 5 , wherein the amount of drinabant, or a salt or polymorph thereof, sufficient to treat, reverse, or reduce the CHS or one or more symptoms thereof is between about 1 mg and about 100 mg per intravenous dose.

7. The method as recited in claim 6 , wherein the amount of drinabant, or a salt or polymorph thereof sufficient to treat, reverse, or reduce the CHS or one or more symptoms thereof is between about 30 and about 100 mg per intravenous dose.

8. The method as recited in claim 5 , wherein the IV dose is delivered by IV injection.

9. The method as recited in claim 8 , wherein the IV dose is delivered in a liquid volume of between about 1 and about 20 mL.

10. The method as recited in claim 5 , wherein the IV dose is delivered by IV infusion.

11. The method as recited in claim 10 , wherein the IV infusion is delivered in a liquid volume of between about 50 to about 500 mL.

12. The method as recited in claim 11 , wherein the IV infusion is delivered over a period of about 30 min to about 2 hours.

13. The method as recited in claim 11 , wherein the IV infusion is delivered at a rate of about 0.5 mL/min to about 2 mL/min.

14. The method as recited in claim 4 , wherein the parenteral route of administration is IM or SC.

15. The method as recited in claim 14 , wherein the amount of drinabant, or a salt or polymorph thereof sufficient to treat, reverse, or reduce the CHS or one or more symptoms thereof is between about 5 and about 60 mg per IM or SC dose.

16. The method as recited in claim 15 , wherein the amount of drinabant, or a salt or polymorph thereof sufficient to treat, reverse, or reduce the CHS or one or more symptoms thereof is between about 5 and about 30 mg per IM or SC dose.

17. The method as recited in claim 15 , wherein the intramuscular dose is delivered in a liquid volume of up to about 2.5 mL.

18. The method as recited in claim 17 , wherein the intramuscular dose is delivered in a liquid volume of about 1 to about 2.5 mL.

19. The method as recited in claim 15 , wherein the SC dose is delivered in a liquid volume of up to about 1.5 mL.

20. The method as recited in claim 19 , wherein the SC dose is delivered in a liquid volume of about 1 mL to about 1.5 mL.

21. The method as recited in claim 4 , wherein the IV, IM, or SC dose or injection contains at least one agent that acts as a non-ionic solubilizer and/or emulsifying agent.

22. The method as recited in claim 2 , wherein the symptom(s) of CHS is/are chosen from nausea, vomiting, and/or abdominal pain.

23. The method as recited in claim 2 , wherein the onset of treatment, reversal, or reduction of the CHS or one or more symptom(s) thereof is/are apparent within 5-30 minutes following intravenous injection of drinabant, or a salt of polymorph thereof.

24. The method as recited in claim 2 , wherein the onset of treatment, reversal, or reduction of the CHS or one or more symptom(s) thereof is/are apparent within 15-45 min following intramuscular administration of drinabant, or a salt or polymorph thereof.

25. The method as recited in claim 2 , wherein if no response is observed within about 30 minutes to about two hours of a first administration of drinabant, and the presence of cannabinoids is confirmed or strongly suspected, a second dose may be administered.

26. The method as recited in claim 25 , wherein if no response is observed within 30-45 minutes of a first administration of drinabant, and the presence of cannabinoids is confirmed or strongly suspected, a second dose may be administered.