Question

PHARMACOLOGY

help as much as you can please !

Ronald Weasley has a very fair complexion. He is planning a trip to the Caribbean and will be cruising on a ship for several days. While shopping in the pharmacy, Ron tells you that he burns easily and asks for your recommendation on how he can prevent getting burned. 1. According to the textbook/Powerpoint, which sun products would you suggest that he use for burn prevention? 2. According to the textbook/Powerpoint, what time of day would be most likely to cause a sunburn? 3. While at the pharmacy, Ron is also refilling his prescription for his oral tetracycline to treat his acne. What additional information should Ron be aware of before leaving on vacation? 4. Ron was having such a fabulous time while cruising in the Caribbean that he forgot to apply the sun products you suggested. He inevitably gets a painful sunburn. According to the information provided in your textbook, what over the counter topical anesthetic product you would recommend Ron to use for relieving the pain of sunburn?

Answer 1

1. Before we decide the sun protection product we should know about SPF(sun protection factor)

- it measures sunscreen efficacy(by using MED)

- a higher SPF Is more effective & is based on UVB protection

- SPF 15 blocks 93% UVB and SPF 30 blocks 96.7% UVB

- SPF >50 cannot appear on labeling

- SPF times the minutes until the skin reddens at UV index 6 equates to the maximum minutes per day(if sunscreen is applied properly)

#. Types of sunscreen

1) chemical - is absorbing(thus blocking) transmission of UVR to the epidermis

2) physical - is opaque & acts by reflecting & scaattering UVR

3) broad-spectrum sunscnreen - protects against UVA & UVB

Note that you shouldn't forget about protective clothing!***

1) creams - dosage form of choice for sunscreen. They adhere well, moisturize the skin, & have a good "skin feel"

2) gels - can be drying & have a stick residue

3) sprays - adhere poorly, are drying, wasteful, & have an inhalation potential

2. Between 10am to 4pm is the time of the day during which sunburn occurs the most because during this time the sun rays are the strongest .

3. Tetracycline is a photosensitive drug . you are taking a medication that can increase photosensitivity, you should avoid excessive exposure to sunlight and tanning beds. (Of course, you already know that you should avoid tanning beds anyway). If you don’t want to be a shut in while the sun shines, make sure you wear a broad spectrum (UVA/UVB) sunscreen with a SPF rating of 30 or greater. This will decrease that amount of sunlight exposure to your skin and therefore the risk of a bad reaction.

Sun Screen Tips:

Make sure it is broad spectrum (UVA & UVB)

Apply roughly one ounce of sunscreen for the full body

Apply one-half teaspoon of sunscreen to smaller body parts i.e. face/neck, each arm and shoulder

Apply one teaspoon of sunscreen to larger body parts i.e. legs, back

Apply 15-30 minutes prior to sunscreen exposure to ensure optimal protection

If swimming or being physically active use a “water resistant” sunscreen

Reapply liberally, especially if excessive swimming , sweating or toweling off

Minimally use a SPF of 15, optimally use a SPF of 30

If applying insect repellant, put the sunscreen on first, wait 15 minutes and then apply the insect repellant

If you are planning on spending a lot of time in the sun while on a medication, be sure to ask your pharmacist about possible photosensitivity side effects.

4. Ale is the topical anestheic used for sunburn