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If a Tadalafil 10mg/tab has a typical half life of 17.5 hours, how long will it take until the blood concentration of this dosage falls to 25% of its initial strength?
Suggested Answer: C
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13 comments · newest first
IV
Ivette
11 months ago
Nope, it's definitely 52.5 hours, trust the math!
JO
Joni
11 months ago
Half-life is 17.5 hours, so 2 half-lives = 35 hours.
AR
Arlean
12 months ago
Wait, is it really 52.5 hours? Seems longer than I thought.
LE
Leota
12 months ago
Totally agree, that’s two half-lives!
ST
Stephane
12 months ago
It takes about 52.5 hours to reach 25% concentration.
BE
Belen
1 year ago
I feel like I might be overthinking this. I thought it was just one half-life for 50%, but now I’m confused about how to get to 25%.
AL
Alishia
1 year ago
If the half-life is 17.5 hours, wouldn't it take about 3.5 half-lives to reach 25%? That sounds like 61.25 hours, but I’m not confident in my math.
IS
Isidra
1 year ago
I remember practicing a similar question where we had to find the time for a drug to reach half its concentration. It was straightforward, so I hope this one is too.
RE
Refugia
1 year ago
I think the half-life concept is crucial here, but I'm not entirely sure how to calculate the time for it to reach 25%.
CO
Corrinne
1 year ago
Hmm, I'm a bit confused about the difference between a simple and a composite relationship class. I'll need to review those concepts before deciding on the best approach here.
VI
Vincent
1 year ago
Alright, I've got this. The NDMP Feature is definitely required, and I believe the Virtual Tape Library Unlimited Drive Option Feature is also needed to share the tape drive. Time to mark that down.
GU
Gussie
1 year ago
I'm pretty confident on this one. The correct answer is option C - the security policy rule should match the original pre-NAT source and destination addresses, and the pre-NAT destination zone.
OL
Ollie
1 year ago
I remember discussing negative reinforcement in class, but that doesn't sound right here since they're not removing anything the kid wants.