It is very common to experience changes in sexual stamina, and at 35, this is often linked to stress, fatigue, or lifestyle factors rather than a serious medical issue. If the concern is maintaining an erection, generic medications like sildenafil or tadalafil can help. If you are looking to delay ejaculation, options like generic dapoxetine or topical lidocaine sprays are sometimes prescribed. However, because these medications require a prescription and can interact with other health conditions, I highly recommend consulting a healthcare provider. They can help identify the root cause, check your hormone levels, and safely recommend the best treatment for you.