Poxet 90 mg (dapoxetine) is prescription-based because it is a centrally acting medicine (an SSRI) that affects serotonin levels and can cause important side effects and drug interactions. It is used for premature ***** (PE) and is usually taken only when needed, not as a daily medicine. Doctors generally want to check a few things before prescribing it because: It can cause dizziness, nausea, headache, and sometimes fainting (syncope), especially in some people after taking it. It can interact with other medicines, including some antidepressants (other SSRIs/SNRIs/MAO inhibitors), certain migraine or psychiatric medicines, and some drugs that affect liver enzymes. These combinations may increase risks such as excessive serotonin activity or other adverse effects. It is not suitable for everyone, for example some people with certain heart problems, significant liver disease, or a history of fainting may need medical assessment before using it. A doctor can also confirm that the problem is actually premature ***** and not another issue such as erectile difficulties, anxiety-related problems, or a medication side effect. Also, 90 mg is a higher strength of dapoxetine. Many approved treatment guidelines and product information commonly discuss starting doses such as 30 mg, with adjustments depending on response and tolerability.