Ed sample pack pills may cause side effects for the individual that takes these medications. Dizziness, headaches, or an upset stomach is often reported. Many males are able to deal with these side effects on their own. However, if more serious side effects are experienced such as an allergic reaction or difficulty breathing then immediate medical attention should be sought. If a painful erection is experienced, then the patient should consult his local doctor immediately as well. Because there are different medications within the ed sample pack, it is best to talk to a local doctor about the individual side effects related to each medication before any of the pills are taken. Males who experience dizziness should get up from a sitting or lying position slowly in order to decrease this side effect. Alcohol should also be avoided as it may increase the negative side effects.