by Sergio Silva, M.D.

Created on: August 21, 2009

The frequency and intensity of side effects are directly proportional to the amount of medication taken (dosage, especially relative to an individual's body weight) and the rapidity with which it is absorbed. The more milligrams you take at one time and the faster you absorb them, the greater the potential for side effects.

So, to minimize side effects in general:

Take the lowest effective dose, and always start out with the lowest recommended dose and build up from there as tolerated and as recommended by your doctor, until you get the symptom relief you are seeking. It may be a good idea at the very start to halve the recommended dosage and take a few "test doses" that may not get the job done, but that will gradually introduce your body to the new substance. Once you are used to a medication, you develop a tolerance to many of the most unpleasant side effects, such as nausea, diarrhea and headaches. Generally speaking, the more unpleasant the side effect, the faster it improves, if it's going to improve at all.

Even at the target dose, divide the dosage into two or more separate administrations if your doctor says you can. Taking 100mg of anything in a single dose is always going to cause more stomach upset (or whatever the side effect may be) than taking 50mg twice a day, or 25mg four times a day. Dividing the dose is less convenient and can cause you to forget doses, which is countertherapeutic, but if you can remember and be disciplined and consistent, many side effects can virtually be eliminated by splitting doses.

Along the same lines, if you are taking more than one medication and it's not too inconvenient, try to avoid taking multiple medications at the same time. Side effects from one compound can be additive and even synergistic with those from another. Even waiting as little as ten or twenty minutes between one medication and the next can save you unpleasant physical sensations that otherwise come with the territory.

If it doesn't interfere with absorption in a negative way, take medication with food or milk (be sure that minerals in the food don't block absorption of the medicine!), and not just "with food," but after a substantial meal; i.e., on a full stomach. For example, taking ibuprofen on an empty stomach can cause painful acid indigestion, which can lead to peptic ulcer disease in some people, but taking Advil on a full stomach protects the stomach lining. For other medications that don't necessarily irritate the GI

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