Enzalutamide (Xtandi, Bdenza, Enzamide): — The Complete Patient Guide

Enzalutamide is taken once a day, at roughly the same time each day, with or without food. Swallow the tablets whole — do not crush or chew them. If you miss a dose, take it as soon as you remember on the same day. If you only remember the following day, skip the missed dose and carry on as normal. Never take two doses together to make up for a missed one. Your oncologist or pharmacist will confirm the specific dose prescribed for you.

Almost certainly yes. Enzalutamide is nearly always prescribed alongside androgen deprivation therapy — the hormone injections or tablets your team may already have started. The two treatments work through different mechanisms and are more effective together than either is alone. Do not stop your hormone injections without being asked to. Your oncologist will review all your medicines at each visit and will tell you if anything changes.

Indian-manufactured generics such as Bdenza and Enzamide contain the same active ingredient at the same dose as Xtandi. They have received approval from CDSCO, India's medicines regulator, and have undergone bioequivalence testing to confirm they behave the same way in the body. Many oncologists in India routinely prescribe these generics. Cost is a meaningful consideration — the original brand is significantly more expensive — and if this is relevant to your situation, it is a reasonable question to raise directly with your oncologist.

Your team will monitor your PSA (prostate-specific antigen) level through regular blood tests. A falling PSA is an early sign that the treatment is having an effect. You will also have imaging scans at intervals your oncologist determines — often every few months — to assess whether the cancer is stable, responding, or progressing. No single test gives the complete picture, so your oncologist looks at PSA, scans, and how you are feeling together. If the PSA rises significantly or new symptoms appear, your team will discuss what that means and what the next step might be.

Yes, and this matters significantly. Enzalutamide affects liver enzymes that process many other drugs, which means it can change the way other medicines behave in your body — lowering their levels, sometimes to the point where they lose effect, or in some cases raising them to unsafe levels. Medicines commonly affected include certain blood thinners, diabetes medicines, epilepsy medicines, and some heart medicines. Herbal preparations and Ayurvedic remedies can interact too. Tell your oncologist and pharmacist about everything you are taking before you start enzalutamide, so interactions can be checked.

Some prostate cancers become resistant to enzalutamide over time, which is usually signalled by a rising PSA or new findings on scans. If that happens, there are other treatments your team can consider — different medicines that work on the androgen pathway, chemotherapy, or other systemic treatments — depending on your general health and what you have already received. Resistance to one treatment does not mean all options are exhausted. Your oncologist will review the evidence for your specific situation at that point and explain what is available.