The phrase "at excessive doses" is correct and usable in written English.
It can be used when discussing the effects or consequences of taking a substance in amounts that are considered too high.
Example: "The medication can lead to serious side effects when taken at excessive doses."
Alternatives: "in high doses" or "at high levels".
In summary, animal data suggest that unreasonable use of vasopressor agents at excessive doses and without fluid infusion appears to be detrimental.
Administration of NO does need to be continuous for PVR reduction, and a potential exists for worsening oxygenation at excessive doses [ 248].
As such, we believe that these findings do not contradict our hypothesis or results, but rather point to the complications of using morphine at excessive doses and in environments dissimilar to the tumour endothelium.
Interestingly, neither the benzamide MS-275 nor the fatty acids VPA and PB were able to substantially elevate LT-SMN2 transcript levels even at excessive doses (Fig. 5B), indicating that MS-275, VPA and PB were not able to overcome LT-SMN2 gene silencing conferred by DNA methylation in this experimental setting.
The present study showed that GATA3 knock-down led to excessive sensitivity to low IR doses.
Excessive doses of vitamin A can cause liver damage or fractures.
Problems can be anticipated when they are used for non-traditional indications, at excessive dose, for prolonged duration, or by patients who are also on multiple modern pharmaceuticals.
In excessive doses, it can thicken the blood, causing strokes or heart attacks.
Increased risk of birth defects is seen not only with deficiency in vitamin A but also with excessive doses.
The drugs were laced with lethal quantities of an antimalarial drug and administered in excessive doses.
On the contrary, both can be harmful in excessive doses.
