Horizon is now paying a total of $171.50 per dose.

Some doctors are also questioning whether they should continue to offer vaccines, for which they pay $10 or more per dose.

The most effective strength spermicide contains at least 100 mg of nonoxynol-9 per dose.

This may look a lot but when you work out the amount per dose it's a very different story.

Adults can take 80 mg-180 mg of simethicone per dose with meals and at bedtime.

And they charge less per dose in countries where governments negotiate drug purchases.

Patients older than 12 years should receive 4 mg per dose.

In fact, at any age women reach higher levels of intoxication than men do per dose of alcohol.

Others, like a new anticlotting drug for internal bleeding, are high-tech expensive, about $7,000 per dose.