18. Subjects who are consuming any prescription drugs (including, but not limited to, sedatives and steroids); herbal supplements (including, but not limited to, St. John's Extract); or any other drugs likely to cause pharmacokinetic interaction within 30 days or 5 half lives, before first drug administration whichever is longer. Subjects using any other over-the-counter drugs (with the exception of paracetamol/NSAIDs and multivitamins that may be allowed up to 3 and 7 days before admission to the clinic, respectively) within 14 days or 5 half lives, prior to the first drug administration. Subjects who have undergone any weight loss surgery or are taking weight loss medications (including alternate medicine products) within 90 days prior to first drug administration