Flowers and medicinal herbs, used in cold infusions, can be a useful support to regularise blood pressure on hot days. 
If you are prone to occasional drops in blood pressure when the temperatures start to rise and the mugginess sets in, there are several infusions that may be right for you.
Let's start with perhaps one of the most obvious options, liquorice infusions, besides being very tasty in an iced summer version, will give you a pleasant “energy boost”.
In addition to liquorice, you could try milk thistle, nettle, rosemary, horsetail, eleutherococcus, infusions and teas containing ginseng or blackcurrant, and rooibos to name a few of the most popular ones for their characteristics.

Low blood pressure - infusions to avoid

While there are infusions that might help, there are also some that might make things worse if you have low blood pressure.
If you are already feeling weak and low, you should not, for example, drink cold infusions based on lavender, fennel, gimko biloba, hawthorn, birch, ginger - in short, infusions based on herbs and spices that can further contribute to vasodilation linked to high temperatures.

Low blood pressure and karkadè

We could have included it in the previous list, but given the many conflicting claims circulating on the net, we preferred to dedicate a space of its own. The confusion is perhaps fuelled by the fact that the thirst-quenching drink made from hibiscus flowers is widespread and used daily in desert regions and countries characterised by rather high temperatures. Contrary to popular belief, karkadè would appear to have hypotensive properties so if your blood pressure is already quite low, it may not be the drink for you. We conclude as always that our posts are for information purposes only and in no way replace medical advice. Especially in the presence of specific diseases or chronic problems, always remember to consult with your doctor before trying any kind of do-it-yourself remedy.