Why does Aaron Cross lie about being out of medication?

Question

The movie Bourne Legacy starts with Aaron Cross climbing over the mountains until he reaches a rest station occupied by another agent.

When Aaron Cross first meets the agent he tells him he lost his medication, when in fact he hid the pills in his boot.

The other agent points out that he crossed the mountains in record time, but Aaron Cross said he had to because he lost his meds. Aaron Cross beat the record by 2 days.

If Aaron Cross was 2 days ahead of schedule, had meds left in his pill case he had around his neck. Why did he hide them in his boot and lie that he lost them? I know he wanted more pills from the other agents locked stash, but what was Aaron Cross motivation for getting more pills to begin with?

Answer 1

Aaron Cross was afraid of running out of his stock and reverting to the significantly less intelligent person he used to be. Later in the film Marta is asking why the meds are so important to him and he shows her a picture of himself and says.

That was me. The army recruiter wanted to meet his quota that month, so he fudged my numbers. He gave me 7 IQ points I didn't have. +

He didn't have a substantial stash as it was anyways. He had only a few blue pills (the ones most important to him because of their intelligence enhancement) and no green pills (which he no longer needed, but he didn't know that). When he finally tracks down Marta he tells her he hasn't had a green pill for 50 hours. At that point he only has 1 or 2 blue pills left.

He knew he was running out, that is why he told the agent he needed more. He also comes across as something of an addict. He'll do anything to get his fix; lie, cheat, murder, anything...

+ Although the U.S. military does not test IQ they do administer the ASVAB, 
which tests basic math and reading skills. There is a minimum score a 
candidate is expected to get to enter into the military. 

Answer 2

Later in the movie we discover that some pills were a way to control agents. Guess Cross lied to hide a couple of pills and protect himself in case of lack of medication.

Answer 3

There are two types of pills in that movie. The green ones are the pills that enhance his physical abilities. Aaron Cross' physical abilities were now permanent and he didn't need the green pills anymore. The blue pills give him the enhancement in intelligence. He still needs the blue pills in order to preserve his superior intelligence. He meets Rachel Weisz's character who can help him viral off the blue pills. What does viraling off mean? It means you don't need to take the green pills or the blue pills everyday in order to retain your superhuman abilities. That is why he goes to the Philipines, because he won't have to rely on the blue pills anymore.

Answer 4

we see him "chem" twice on his journey so it seems he is double dosing so he hides his pack so he can say he lost them in order to get more, So when Cross he virals off them, as he has no way of getting more pills detox was inevitable, and to detox with out the stem injections would have taken days/weeks the injection sends him in to rapid detox which clears his system in a much quicker time than naturally detoxing would, Once his system has beaten the virus the addiction is gone and the after effects of the pills are gone along with the added ability's to