The British Red Cross service brought in by Hywel Dda Health Board after it closed the minor injury unit in Tenby will run seven days a week this summer.
The service was piloted at Tenby hospital over weekends and bank holidays last summer.
More than 50 people have benefited from the free service already this year.
British Red Cross use a group of skilled individuals experienced in providing first aid at public events to give top quality care to people visiting the hospital.
Nigel Davies, senior services manager for the Red Cross, said: “The service is being well received by locals and holidaymakers and we are happy to provide this additional services over the summer.”
The Community Pharmacy Triage + Treat Service in Tenby and Saundersfoot also continues to provide a service to both the local and tourist population.
So far, 14 patients have been seen with conditions ranging from Jellyfish stings, to severe sunburn and foreign bodies in an ear, said a health board spokesman.
However, there will be no Triage + Treat Service running from The Glen Pharmacy, Tenby this week as the pharmacist is on holiday. The service will recommence on August 11.
The service will still be available in Saundersfoot at B M Patel & Son Ltd, The Pharmacy from 9am–5.30pm Monday to Friday and 9.30am–12pm on Saturdays.
The health board’s Choose Well campaign uses a colour-coded thermometer to help people link symptoms to the services and support that is right for their need. This ensures people get the right treatment in the right place and busy emergency services can help those who need them most.
In emergencies always dial 999. For other healthcare, if you do not know what to do, call NHS Direct Wales on 0845 46 47 or go to www.nhsdirect.wales.nhs.uk for advice and for more information on Choose Well go to www.hywelddahb.wales.nhs.uk/choosewell