Technical tinkering, such as changing the formulation of a drug from a fast-acting pill to a slow-release system, is a common tactic.

ECONOMIST: Prescription drugs

Dr. Barr suggested trying a slow-release niacin supplement for this.

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The effects of aspirin were independent of age, and sex, and were also seen with a low-dose, slow-release formulation of aspirin designed to inhibit platelets but to have little systemic bioavailability.

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The regime the team has devised is a combination of a daily pill made of desogestrel (an artificial form of progesterone) and a slow-release testosterone pellet that is placed under the user's skin.

ECONOMIST: Contraception

But Dr Rosenberg believes that at least some of the substances being considered as microbicides could be packaged into slow-release rings that a woman could wear in her vagina for a month or more.

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She is treated with a slow-release opioid patch.

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But as of now, abuse resistant mechanisms only apply to OxyContin-like slow release painkillers, and do not apply to short-acting analgesics, which are the most widely abused painkillers.

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Most think a prolonged period of easy monetary policy and a slow release of pent-up demand for durable goods and homes can yield growth of at least 3%.

ECONOMIST: The American economy

By the time his new documentary, "Exit Through the Gift Shop, " winds its way through a slow release in the United States, Banksy will be more popular than ever -- and still, no one will know who he is.

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Ever since the release of the first Kindle ebook reader, Amazon has made slow but determined progress into the post-PC arena.

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