Are Flomax and Rapaflo the Same Thing?
Flomax (tamsulosin hydrochloride) and Rapaflo (silodosin) are alpha-blockers used to treat the symptoms of a prostate gland condition called benign prostatic hyperplasia (BPH, a noncancerous enlargement of the prostate gland).
What Are Possible Side Effects of Flomax?
Common side effects of Flomax include:
- dizziness,
- lightheadedness,
- weakness,
- drowsiness,
- headache,
- nausea,
- diarrhea,
- back pain,
- blurred vision,
- dental problems,
- sleep problems (insomnia),
- abnormal ejaculation,
- decreased sex drive,
- runny or stuffy nose,
- sore throat, or
- cough.
What Are Possible Side Effects of Rapaflo?
Common side effects of Rapaflo include:
- dizziness,
- weakness,
- headache,
- sleep problems (insomnia),
- diarrhea,
- stomach pain,
- decreased amount of semen released during sex,
- abnormal ejaculation,
- runny or stuffy nose, or
- sore throat.
Tell your doctor if you have serious side effects of Rapaflo including:
- feeling like you might pass out, or
- an erection that is painful or lasts 4 hours or longer.
What is Flomax?
Flomax (tamsulosin hydrochloride) is an alpha-blocker used to treat the symptoms of a prostate gland condition called BPH (benign prostatic hyperplasia).
What is Rapaflo?
Rapaflo (silodosin) is an alpha-adrenergic blocker used to improve urination in men with benign prostatic hyperplasia (enlarged prostate).
What Drugs Interact With Flomax?
Flomax may interact with conivaptan, imatinib, isoniazid, antibiotics, antidepressants, antifungals, heart or blood pressure medications, or HIV/AIDS medicines.
Flomax may also interact with cimetidine, cyclosporine, methimazole, pioglitazone, ropinirole, ticlopidine, warfarin, anti-malaria medications, erectile dysfunction medicines, heart rhythm medications, or medicines to treat psychiatric disorders.
What Drugs Interact With Rapaflo?
Rapaflo may also interact with etoconazole, itraconazole, ritonavir, diltiazem, erythromycin, other alpha-blockers, sildenafil, or tadalafil.
How Should Flomax Be Taken?
Flomax capsules 0.4 mg once daily is recommended as the dose for the treatment of the signs and symptoms of BPH and dosing should be taken by mouth, usually once daily.
- Take the first dose at bedtime to minimize the chances of getting dizzy or fainting.
- After the first dose, take your regularly scheduled dose 30 minutes after the same meal each day.
- Drug interaction and warnings include that Flomax capsules should not be used in combination with other alpha andrenergic blocking agents.
- It should not be used in combination with strong inhibitors of CYP3A4 (e.g., ketoconazole).
Flomax capsules 0.4 mg once daily is recommended as the dose for the treatment of the signs and symptoms of BPH and dosing should be taken by mouth, usually once daily.
- Take the first dose at bedtime to minimize the chances of getting dizzy or fainting.
- After the first dose, take your regularly scheduled dose 30 minutes after the same meal each day.
- Drug interaction and warnings include that Flomax capsules should not be used in combination with other alpha andrenergic blocking agents.
- It should not be used in combination with strong inhibitors of CYP3A4 (e.g., ketoconazole).
From 
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RxList. Flomax Side Effects Drug Center.
https://www.4flomax.com/
RxList. Rapaflo Side Effects Drug Center.
https://cnes.jsintl.com.cn/?blood=rapaflo-side-effects-drug-center.htm