Side effects of Cialis – a headache, vision problems and others.

Each consumer of drugs should be informed about the unwanted bad effects that can accompany taking the medicament. The risk of occurrence of bad effects varies significantly depending on the pharmacological group of the medicament. We would like to assure you, that inhibitors of phosphodiesterase-5 (PDE-5) including Cialis are drugs with the most favorable safety profile. However, there are no absolutely harmless medicaments, and therefore we suggest you familiarizing yourselves with the common & uncommon side effects of Cialis.

A headache caused by Cialis

This trouble is the most frequent bad effect caused by tadalafil (main active agent of the medicament). In clinic trials, headache occurred in 7.2% of cases. In other words, every fourteenth male person, who uses Cialis, experienced headaches of varying severity. As demonstrated in clinic experiments on Viagra – a little more studied medicament in this respect, – this effect is manifested at neurotransmitter levels. For example, scientists have found that sildenafil (main agent of Viagra) caused anxiety in rodents. In other words, PDE5i medicaments, including Cialis, influenced deep structures of the brain, and now researchers do not clearly understand how this action is realized. This fact is a reason to think about the reckless abuse of drugs increasing potency. In addition, “tides” of blood to the face, nasal congestion are relatively frequent bad effects of the medicament.

Muscle and spinal pain

Spinal & muscle pain was usually manifested within 12-24 hours after taking of the medicament in clinic experiments and, as a rule completely disappeared in 48 hours. Study participants, who were not fortunate enough to experience this bad effect of tadalafil, complained of widespread bilateral pain in the lower lumbar, gluteal and thigh muscles with peaking in the supine position. In most cases, the pain was slight and disappeared without pharmacological intervention. The Severe spinal pain was observed very rarely (less than 5% of cases). If a patient required medical curing, nonsteroidal antiphlogistic remedies were applied. Pain incompatible with taking the medicament was observed only in 0.5% of male persons.

Problems with vision

Despite the primary effect on the enzyme PDE5, tadalafil slightly affects PDE-6, isozyme contained in the retina. In this regard, Cialis may lead to visual disturbances such as blurred vision, feeling pain in the eyeball, disturbance of the visual fields, a temporary violation of the color recognition in a pair of “green/blue”, and cyanopsia (also known as “blue vision”). All above-mentioned phenomena have occurred very rarely –approximately in 0.1% of cases.

Other rare Cialis side effects

This anti-ED medicament may also cause the following undesirable effects:
1) priapism – long lasting (at least during four hours) and painful penile erection;
2) problems with heart – irregular heartbeats, heart attack;
3) disorders of the digestive system – gastroesophageal reflux (also GERD) & abdominal pain;
4) problems with skin – rash, urticaria, hyperhidrosis (excessive sweating);
5) nasal bleeding, hypersensitivity reactions etc.
It should be noted, that the frequency of the abovementioned bad effects is very rarely.