The risk of bleeding can include stomach ulcers from stomach bleeding, nausea from taking blood thinners, and diarrhea from taking blood thinners. This effect is very similar to what is observed in men taking viagra which also increases the hardness of the penis. Doxycycline capsule 100mg price the study team found that the use of the drug was associated with slightly lower odds of death among the older people (those over 75 and over 90 compared to those 75-79 or 90-94) but the reduction was limited to very high-risk patients (those over 100 years and over 120 years).